What Is a Coriolis Mass Flowmeter and How Does It Work?

Posted on September 6, 2023 by KimGuo11

Coriolis Mass Flowmeter is The Gold Standard in Modern Flow Measurement.
In today’s fast-paced industries, accurate flow measurement is pivotal. It’s the cornerstone for a myriad of vital tasks, from perfecting recipe formulations to ensuring transparent billing operations. The Coriolis Mass Flowmeter emerges as a leading solution amidst this backdrop, known for its impeccable reliability and precision. As industry demands grow, understanding the role and significance of this innovative tool becomes essential for anyone in the sector.

RFQ

What Is a Coriolis Mass Flowmeter and How Does It Work

Featured Coriolis Mass Flowmeters

**Z-Series Straight Tube Micro Motion Coriolis Flow Meter**

**T-series Triangle Coriolis Mass Flowmeter**

**V-series Curved Digital Mass Flow Meter**

What is a Coriolis Mass Flowmeter?

The Coriolis mass flowmeter is an instrument that uses the principle of Coriolis force proportional to the mass flow generated by the fluid flowing in the vibrating tube to directly measure the mass flow.

There are two parallel flow tubes inside the sensor, with a driving coil in the middle and a detection coil at both ends. The detection coils installed at both ends of the vibrating tube will generate two sets of signals with different phases. The phase difference between the two signals is proportional to the mass flow rate of the fluid flowing through the sensor. The computer calculates the mass flow rate flowing through the vibrating tube.

When different media flow through the sensor, the main vibration frequency of the vibrating tube is different, and the density of the media is calculated accordingly. The platinum resistance installed on the vibration tube of the sensor can indirectly measure the temperature of the medium.

The Coriolis mass flowmeter has high measurement accuracy, and the measurement is not affected by the physical properties of the medium. There is no requirement for the length of the upstream and downstream straight pipe sections.

The Coriolis mass flowmeter can measure the density of the medium and indirectly measure the temperature of the medium.

Coriolis mass flowmeters are widely used in chemical, pharmaceutical, energy, rubber, paper, food and other industrial sectors.

History of Mass Flow Measurement

Long before the rise of our modern industries, people recognized the need to measure the flow of liquids and gases. In ancient civilizations, farmers would gauge the flow of water into their fields using simple channels and markings. As time progressed, so did our methods.

By the Industrial Revolution, the need for precise flow measurement became critical. Factories required exact amounts of steam, water, and other fluids to power machinery and produce goods. This pushed inventors to create more advanced tools.

Enter the 20th century, and we witnessed a breakthrough: the Coriolis Mass Flowmeter. Using the Coriolis Effect, it offered an accuracy and versatility unmatched by older methods. Today, it stands as a testament to our journey from basic channels to sophisticated devices, ensuring industries everywhere run efficiently and effectively.

The Coriolis Principle

G.G. Coriolis, a French engineer, noticed that objects moving on Earth’s surface shift sideways. This happens because the planet rotates eastward. In the Northern Hemisphere, the deflection is to the right of the motion; in the Southern Hemisphere, the deflection is to the left. This drift plays a principal role in both the tidal activity of the oceans and the weather of the planet. A point on the equator traces a bigger circle each day than a point near the poles. When an object moves towards a pole, it turns eastward because it maintains its faster speed as it moves across the Earth’s surface. This drift is defined as the Coriolis force.

When a fluid is flowing in a pipe and it is subjected to Coriolis acceleration through the mechanical introduction of apparent rotation into the pipe, the amount of deflecting force generated by the Coriolis inertial effect will be a function of the mass flow rate of the fluid. If a pipe is rotated around a point while liquid is flowing through it (toward or away from the center of rotation), that fluid will generate an inertial force (acting on the pipe) that will be at right angles to the direction of the flow.

With reference to the picture above, a particle (dm) travels at a velocity (V) inside a tube (T). The tube is rotating about a fixed point (P), and the particle is at a distance of one radius (R) from the fixed point.

The particle moves with angular velocity (w) under two components of acceleration, a centripetal acceleration directed toward P and a Coriolis acceleration acting at right angle to ar:

ar (centripetal) = w2r

at (Coriolis) = 2wv

In order to impart the Coriolis acceleration (at) to the fluid particle, a force of at (dm) has to be generated by the tube.
The fluid particle reacts to this force with an equal and opposite Coriolis force:

Fc = at(dm) = 2wv(dm)

Then, if the process fluid has density (D) and is flowing at constant speed inside a rotating tube of cross-sectional area A, a segment of the tube of length X will experience a Coriolis force of magnitude:

Fc = 2wvDAx

Because the mass flowrate is dm = DvA, the Coriolis force Fc = 2w(dm)x and, finally:

Mass Flow = Fc / (2wx)

This is how measurement of the Coriolis force exerted by the flowing fluid on the rotating tube can provide an indication of mass flowrate.
While rotating a tube is not necessarily practical standard operating procedure when building a commercial flow meter, oscillating or vibrating the tube – which is practical – can achieve the same effect.

How Does a Coriolis Flow Meter Work?

When a particle located in a tube that rotates with P as a fixed point (rotation center) moves toward or away from the rotation center, an inertial force will be generated. The principle is shown in the figure:

In the figure, the particle with mass δm moves to the right in the pipe at a constant speed υ. The pipe rotates around a fixed point P at an angular velocity ω. At this point the particle will acquire two acceleration components:

The normal acceleration αr (centripetal acceleration), its magnitude is equal to ω2r, and its direction is towards point P.
Tangential acceleration αt (Coriolis acceleration), its magnitude is equal to 2ωυ, and its direction is perpendicular to αr.

The force generated by tangential acceleration is called Coriolis force, and its magnitude is equal to Fc=2ωυδm.

In the figure fluid δm=ρA×ΔX,
So the Coriolis force can be expressed as:
ΔFc=2ωυ×δm=2ω×υ×ρ×A×ΔX=2ω×δqm×ΔX

where A is the cross-sectional area of the pipe
δqm=δdm/dt=υρA

For a specific rotating pipe, its frequency characteristic is certain. ΔFc only depends on δqm.

Mass flow can therefore be measured directly or indirectly by measuring the Coriolis force.

The Coriolis principle mass flowmeter works according to the above principle.

The actual flow sensor does not achieve rotational motion, but pipe vibration instead.
Its principle diagram is shown in the figure below.

The two ends of a curved pipe are fixed, and a vibration force (according to the resonant frequency of the pipe) is applied to the pipe at the middle position of the two fixed points. Make it vibrate at its natural frequency ω about the fixed point as the axis.

When there is no fluid flow in the pipeline, the pipeline is only affected by the external vibration force. The two half-sections of the pipeline vibrate in the same direction and there is no phase difference.

When there is fluid flow, it is affected by the Coriolis force Fc of the medium particle flowing in the pipeline (the Coriolis forces F1 and F2 in the two half sections of the pipeline are equal in size and opposite in direction). The two halves of the pipe twist in opposite directions, creating a phase difference. This phase difference is proportional to the mass flow rate.

The design of the sensor is to convert the measurement of the Coriolis force into the measurement of the phase time difference on both sides of the vibrating tube, which is the working principle of the Coriolis mass flowmeter.

Coriolis Mass Flowmeter Tube Designs

Early designs of Coriolis mass flow meters were constructed to feed the flowing fluid through a pipe into a rotating system. The mass flow is measured by a torque sensor installed on the shaft. This flowmeter has only been trial-produced in the laboratory.

In a commercial product design, it is impractical to generate the Coriolis force through the rotation of the measurement system. Therefore, the method of vibrating the measuring tube is used instead of the rotary motion. In this way, the effect of the Coriolis force on the measuring tube is also realized, and the measuring tube is displaced under the action of the Coriolis force.

Since the two ends of the measuring tube are fixed, the force acting on each point on the measuring tube is different, and the resulting displacements are also different. An additional twist is thus formed on the measuring tube. By measuring the phase difference at different points in this twisting process, the mass flow rate of the fluid flowing through the measuring tube can be obtained.

Our common forms of measuring tubes are as follows:

S-shaped measuring tube,
U-shaped measuring tube,
Double J-shaped measuring tube,
B-shaped measuring tube,
Single straight tube measuring tube,
Double straight measuring tube,
Ω-shaped measuring tube,
Double ring measuring tube, etc.;

Below we give a brief introduction to their structures.

As shown in the figure, the measurement system of the S-shaped measuring tube mass flowmeter consists of two parallel S-shaped measuring tubes, a driver and a sensor. The two ends of the tube are fixed, and the center of the tube is equipped with a driver to make the tube vibrate.

Sensors are installed at the symmetrical positions of the measuring tubes. The relative displacement between the vibrating tubes is measured at these two points. The mass flow is proportional to the phase difference of the oscillation frequencies measured at these two points.

The U-shaped tube has two structures of single and double measuring tubes.

The electromagnetic drive system drives the U-shaped measuring tube to vibrate at a fixed frequency. When the fluid is forced to accept the vertical movement of the tube, the tube moves upward during the first half of the vibration cycle, and the fluid in the measuring tube generates a downward pressure force before the driving point, which hinders the upward movement of the tube. An upward force is generated after the actuation point, accelerating the upward movement of the tube. The combination of these two forces twists the measuring tube. During the other half cycle of the vibration, the direction of the twist is reversed.

The degree of distortion of the measuring tube is directly proportional to the mass flow rate of the fluid flowing through the measuring tube. Install electromagnetic inductors on the measuring tubes on both sides of the driving point. To measure the phase difference of its movement, this phase difference is directly proportional to the mass flow through it.

In the double U-shaped measuring tube structure, the two measuring tubes vibrate in opposite directions. Make the measuring tube twisted out of phase by 180 degrees. as the picture shows. Compared with the single-measurement tube type, the detection signal of the double-tube type is amplified, and the flow capacity is also improved.

The two J-shaped pipes are centered on the pipe and distributed symmetrically. A driver mounted on the J-shaped section causes the tube to vibrate at a certain fixed frequency.

When the fluid in the measuring tube flows at a certain speed, the fluid in the measuring tube produces a Coriolis force effect due to the existence of vibration. This Coriolis force acts on the measuring tube, but the direction of the Coriolis force generated on the upper and lower tubes is different. The straight pipe part of the pipe produces different additional motion, that is, produces a phase difference of relative displacement.

In a double J-tube measurement system, the two tubes vibrate in opposite directions at the same time. The phase difference of the relative displacement between the upper and lower two straight pipes is increased. When the fluid is not flowing, the phase difference of the displacement signals measured by the sensors A and B is zero.

When the fluid in the measuring tube flows, the influence of the reaction force generated by the Coriolis force on the measuring tube in a certain direction that drives its vibration. When the pipe 1 separates and the pipe 2 approaches, the upper part of the pipe 1 moves faster and the lower part slows down, while the upper part of the pipe 2 speeds up and the lower part slows down in the opposite direction. As a result, there is a phase difference between the signals measured by the upper and lower mounted sensors. The magnitude of this signal directly reflects mass flow.

B-tube The Coriolis Mass Flowmeter flow measurement system consists of two B-tubes parallel to each other. The measured fluid is evenly sent into two B-shaped measuring tubes through the flow divider. The drive unit is mounted centrally between the two tubes. The measuring tube is driven to vibrate at a stable harmonic frequency. During the outward movement of the measuring tube, the straight tube parts are pushed away from each other. Under the action of the driver, the loops L1′ and L1” are close to each other, and the loops L2′ and L2” are also close to each other. Since each loop is fixed at one end to the meter body, rotational motion is restrained at the end regions and thus concentrated near the nodes.

However, the fluid in the circuit slows down when the circuits L1 ′ and L1 ″ approach each other under the action of the Coriolis force. And the two loops at the other end L2′ and L2” approach each other and the speed increases.

The opposite happens when the measuring tube is moved inwards. The straight pipe sections approach each other under the action of the driving force, while the two loops on the two cross-sections move away from each other. The Coriolis force generated by the fluid in the pipeline is superimposed on this basic motion, which will speed up the separation speed of the two circuits of L1′ and L1”, and reduce the separation speed of the two circuits of L2′ and L2”.

By properly installing the sensor between the two circuits on the end face. These movements induced by the Coriolis force can be used to accurately determine the mass flow rate of fluids.

The measurement system of this single straight tube mass flowmeter consists of a straight tube with fixed ends (flanges) and a vibration driver on it.

When the fluid in the tube does not flow, the driver makes the tube vibrate, and the fluid in the tube does not generate Coriolis force. Points A and B are subjected to equal force and change at the same rate.

When the fluid in the measuring tube flows in the tube at the velocity V, it is affected by the vibration force at point C (the vibration force at this time is upward). When the fluid particle moves from point A to point C, it is accelerated, and the particle produces a reaction force F1, which slows down the upward movement of the pipe. And between point C and point B, the fluid particle is decelerated. Accelerates the upward motion of the pipe. As a result, these two opposing forces on either side of point C cause a deformation of the tube. The phase difference of this deformation is proportional to the mass flow rate of the fluid flowing through the measuring tube.

Compared with the single straight tube, the double straight tube shape can reduce the pressure loss and increase the signal of the sensor. The actual structure is shown in the figure. The driver is placed in the center, and the two photoelectric sensors are only symmetrical to the two sides of the center. The measuring tube is less affected by the axial force.

When the fluid is not flowing, the photoelectric sensor is subjected to the same phase of the displacement generated by the tube. Coriolis forces are generated when a fluid medium flows through two vibrating measuring tubes.

This force causes opposite displacements on either side of the vibration point of the measuring tube. The fluid medium in the measuring tube before the vibration point attenuates the vibration of the tube, that is, the displacement speed of the tube slows down. The fluid medium in the test tube after the vibration point strengthens the vibration, that is, the displacement speed of the tube is accelerated.

Through the photoelectric sensor, the phase difference between the two ends is measured. This phase difference is proportional to the mass flow in the measuring tube when the oscillation frequency is constant.

The structure of the Ω-shaped measuring tube Coriolis Mass Flowmeter is shown in the figure. The driver is placed in the middle of the straight pipe section. When the fluid in the pipe flows at a certain speed, the pipes are separated or approached due to the vibration of the driver.

As the tubes separate, Coriolis forces generated in the fluid ahead of the vibration point oppose the vibrating force, slowing the tubes down. After the vibration point, the Coriolis force generated by the fluid in the pipe is in the same direction as the vibration, which accelerates the movement speed of the pipe.

When the driver brings the tubes closer together, the opposite effect occurs. The phase difference of the two tube word movements can be measured by the sensors at A and B. From this, the mass flow rate of the fluid flowing through the measuring tube can be obtained.

The double annular measuring tube Coriolis Mass Flowmeter consists of a pair of parallel helical tubes with a short straight tube.

In the middle position D of the pipe is equipped with a driver. The two measuring tubes are subjected to periodic opposite vibrations. Two sensors are arranged at the two ends of the elliptical spiral tube, equidistant from the middle point D. Measure the relative velocity of motion between the pipes at these two points. The phase difference between these two relative speeds is proportional to the mass flow rate of the fluid flowing through the measuring tube.

When the fluid in the measuring tube does not flow, the deformation of the tube caused by the vibration force is the same on both sides of the middle point. At the two measuring points at the sensor, the phase difference of the measured vibration displacement is zero. When the fluid flows in the measuring tube, before the point of maximum amplitude, the fluid particle produces an effect opposite to the vibration direction due to the Coriolis force. force. After this point, however, a force acting in the same direction as the vibration is produced.

Since the force on the two measuring tubes at the same moment is equal in size and opposite in direction, it is reflected that the moving speed of the tubes at the measuring points at the two sensors is increased or decreased, and the phase difference between these two points can be measured to obtain a pass Measure the mass flow rate of the tube fluid.

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We, Sino-Inst, are the manufacturer of Coriolis Mass Flowmeters. Our Coriolis mass flow meter products directly and accurately measure the mass flow, density and temperature of fluids in closed pipes. The main types that are selling well are U series (U-shaped tube), T series (triangular shape), Z series (straight tube shape) and so on.

Universal measuring principle for liquids and gases
Multivariable measurement: Simultaneous measurement of mass flow, density, temperature and viscosity
High measurement accuracy: ±0.2% typ.; optional: ±0.1%
The measuring principle is completely independent of the physical properties of the fluid and the flow field
No front/rear straight pipe length requirements
Wide range of measurement range: 1:10,1:20

Our Coriolis Mass Flowmeter, from DN03~DN250. Widely exported and sold to various countries. If you need to measure mass flow, density, temperature and other parameters. Please feel free to contact our sales engineers!

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KimGuo11

Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.

Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.

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Split Type Density Meter for Liquids

Posted on September 4, 2023 by KimGuo11

Density meter for liquids is a high-precision density meter based on the principle of vibration. Adopt split design. Submersible density meters can be widely used in closed or open tanks, tanks, diversion channels and open channels. Split Type Density Meter for Liquids is also widely used in the detection of sediment content in hydrological stations. Generate corresponding 4-20mA analog signal according to the change of medium density. At the same time, the digital signal can be converted and output to facilitate remote calibration and monitoring. Depending on the industrial process, density can be expressed in: Brix degrees, GL degrees, Baume degrees, Plato degrees and percent concentration.

RFQ

Features of Split Type Density Meter for Liquids

Input design, easy to use
Continuous online monitoring
Temperature compensation
Integrated design, maintenance-free
IP68 waterproof design, suitable for deep water measurement
Explosion-proof design, convenient for use in special industries

Technical Parameters

Measuring range:	0 – 3 g/cc (0 – 3000 kg/m3)
Calibration range:	0.6 – 1.25 g/cc (600 – 1250 kg/m3)
Measurement accuracy:	± 0.001 g/cc (± 1 kg/m3)
Repeatability:	± 0.0001 g/cc (± 0.1 kg/m3)
Operating temperature range:	-50℃ ~ +200℃
Maximum working pressure:	20Mpa
Fluid Viscosity Range:	0 – 20000 cP
Temperature coefficient:	0.1 kg/m3/℃ (after correction)
Pressure Effect:	Negligible
Built-in temperature sensor:	PT100
Wetted material:	Stainless steel, Hastelloy C22, manganese alloy 400, titanium alloy, etc.
Fork Coating:	Standard, PTFE or Electropolished
Power supply:	20 – 28 VDC, 35 – 45 mA
Analog output:	4 – 20 mA, isolated, not self-powered
Output accuracy (20°C):	± 0.1% of reading or ± 0.05% FS
Output repeatability (-40 ~ +85°C):	± 0.05% FS
Protection class:	IP65
Shell:	Aluminum alloy

Technical advantages:

Direct density or concentration readings, available engineering units include: g/cm3, kg/m3, specific gravity, °Brix, °Baume, °Plato, °GL, percent solids, etc.;
Suitable for flowing or static liquids;
Suitable for pipeline and tank density measurement;
Integrated structure, no moving parts;
Standard industrial and hygienic process connections;
The instrument has a built-in temperature sensor to provide accurate temperature compensation;
Online remote calibration, digital local display;
Factory multi-point linear correction, higher precision;
On-site recalibration: no standard reference source, no experimental calibration, no process interruption;
The converter is compatible with three installation methods: wall-mounted, embedded, and desktop;

Split Type Density Meter for Liquids Applications

Split type density meter for liquids can be widely used in closed or open tanks, tanks, diversion channels and open channels.

Density meter for liquids is also widely used in the detection of sediment content in hydrological stations. In the petrochemical industry, brewing industry, food industry, pharmaceutical industry and mineral processing (such as clay, carbonate, silicate, etc.), it is specifically used for interface detection in multi-product pipelines in the above industries, density detection of stirred mixtures . Reactor endpoint monitoring, separator interface detection.

Application industry

Measurement of Lime Slurry Density and Concentration in Desulfurization Industry
Density and concentration measurement of ammonia water in the denitrification industry
Density and concentration measurement of pulp in mineral processing industry
Density and concentration measurement of proportioning liquids in the surface treatment industry
Density and concentration measurement of slime during coal conveying
Density and concentration measurement of syrups
Density and concentration measurement of starch emulsions
Density and concentration measurement of medicinal liquids and concentrates in the pharmaceutical industry
Density and concentration measurement of chemical reagents such as alcohol and chemical liquids
Density and concentration measurement of petroleum and oil-synthetic products

FAQ

A density meter is a tool that measures how much mass of a substance is contained in a certain volume of liquid. In simpler terms, it tells us how “thick” or “thin” a liquid is.

To measure liquid density, you fill a container or sample holder with the liquid. Then, the density meter checks how much the liquid weighs compared to its volume. The result tells you the liquid’s density.

A hydrometer can measure the density of liquids lighter than water. It’s a floating instrument. If the liquid is lighter than water, the hydrometer sinks more. If it’s heavier, it floats higher.

A densimeter, another name for a density meter, is used to find out the density of liquids. People use it in labs, factories, and other places to check the quality of liquids or to learn more about their properties.

Online Alcohol Density Meter-Alcohol Concentration Meter

Posted on September 2, 2023 by KimGuo11

Alcohol Density Meter is also called Alcohol Concentration Meter. The Online Alcohol Density Meter uses an acoustic frequency signal source to excite the metal vibrator. And make the vibrator vibrate freely at the center frequency. This frequency correlates with the density of the contacting liquid. Therefore, the density of the liquid can be measured by analyzing the frequency. Further temperature compensation can eliminate the temperature drift of the system. As for the concentration, the standard wine concentration value at 20°C can be calculated according to the relational formula corresponding to liquid density and concentration.

RFQ

Features of Online Alcohol Density Meter

With analog signal 4 ~ 20mA and digital signal RS485 remote transmission;
Real-time display of standard alcohol content at 20°C; real-time indication of alcohol concentration and temperature;
You can directly enter the instrument menu to set parameters and debug on site, which is easy to operate;
It has the functions of pure water calibration, fine-tuning of measured value and temperature compensation;
Online real-time measurement, which can be directly used for production process control;
The parts in contact with the liquid are made of 316 stainless steel, which is safe, hygienic and has good corrosion resistance.

Technical Parameters

Signal mode:	Four-wire system
output signal:	4~20 mA (active output) or RS 485 (Modbus RTU standard protocol, communication rate 9600)
power supply:	24VDC (resistive elements cannot be loaded externally or connected in series with PLC)
Measuring range:	0~100%, according to the usage, can be calibrated to measure in a certain range
Accuracy:	1%,
Explosion-proof grade:	Ex dIIB T6 Gb
Work pressure:	< 1 MPa
Operating temperature:	– 10~ 85℃
Electrical Interface:	M 20×1.5
Process interface:	3〞Sanitary Quick Release Chuck Ø91 or 2〞Sanitary Quick Release Chuck Ø64
Wetted parts:	316 stainless steel

The accuracy	±0.001g/cm3	±0.25%
The scope of work	0～2g/cm3	0～100%
repeatability	±0.0001g/cm3	±0.1%
Process temperature effect (corrected)	±0.0001g/cm3	±0.1% （per ℃）
Process pressure effect (corrected)	can be ignored	can be ignored

(1) The above accuracy applies to the calibration range of 0.8–1.5g/cm3 (800–1500 kg/m3).
(2) The maximum viscosity of the liquid can reach 2000cP.
(3) Temperature effect refers to the maximum measurement deviation caused by the process fluid temperature deviating from the factory calibration temperature.
(4) Pressure effect is defined as the change in sensor flow and density sensitivity due to process pressure deviation from calibration pressure.

Process temperature	Standard: –25℃～+120℃
Process temperature	Customized: –25℃～+150℃
Ambient temperature	–25℃～+85℃
Temperature Coefficient	20ppm/℃ (after calibration)
Built-in temperature sensor	temperature chip

Working pressure	Standard	Within 2.5MPa
	Special custom	Within 6.3MPa
Test pressure	Tested at 1.5 times the maximum working pressure
Actual maximum working pressure is limited by process connection rating

Online Alcohol Density Meter applications

The online alcohol density meter uses a sound wave frequency signal source to excite the metal vibrator. And make the vibrator vibrate freely at the center frequency. This frequency correlates with the density of the contacting liquid. Therefore, the density of the liquid can be measured by analyzing the frequency. Further temperature compensation can eliminate the temperature drift of the system. As for the concentration, the concentration value at a temperature of 20°C can be calculated according to the relationship between the corresponding liquid density and concentration.

Liquor concentration, density and temperature measurement in liquor production process section:

Alcohol degree measurement in the wine picking process during the brewing stage;
Monitoring of alcohol content in wine storage tanks;
Measurement of the concentration of blended craft wine;
Measurement of alcohol concentration in filling;

Online Alcohol Density Meter is suitable for various ways such as pipeline installation or container wall insertion installation. Both dynamic and static measurements can be made. Installation method Sanitary quick-loading chuck type.

Alcohol Density – Concentration Measurement Solution

Online Alcohol Density Meter for Comprehensive wine extraction

The production line of the distillation workshop needs to carry out comprehensive collection of alcohol concentration and implement intelligent and digital production first. The grains in the tower are distilled and the wine flows into the tank through the condenser.

The system will distinguish the main effective wines of the head and tail wines according to the concentration of the wines. Equipped with a main fully closed sanitary automatic control valve. Guarantee the qualified delivery conditions for comprehensive and effective liquor. This process section is mostly used for Maotai-flavored wine picking.

The first stage: As the distillation time progresses, what follows is a head with impurities. The system sets the collection and control of wine head by time. About 5kg, at this time the valve opens. The wine head flows into the tank until the set time is reached, and the valve is closed. It can be adjusted according to different liquor brewing processes.

The second stage: the main wine is collected comprehensively through wine tanks. Measure the alcohol concentration in real time with an alcohol density meter to ensure that the comprehensive alcohol content reaches the qualified alcohol content and make effective adjustments.

The third stage: tail wine collection. When the alcohol content is less than the minimum setting, close all valves. Open the tail valve for effective collection.

Online Alcohol Density Meter for Segmented wine extraction

The production line of the distillation workshop needs to collect the alcohol concentration in sections and take the lead in implementing intelligent and digital production. The grains in the tower are distilled and the wine flows into the tank through the condenser. The system will be divided into the following three stages of control according to the different alcohol concentrations, with a fully closed sanitary automatic control valve.

The first stage: With the passage of distillation time, the wine head with impurities comes out. The system sets the collection and control of the wine head through time. It is about 5kg. At this time, the valve opens. The wine head flows into the tank. Until When the set time is reached, the valve closes. It can be adjusted according to different liquor brewing processes.

The second stage: After the separation of the beer head is the focus of the process. At this time, the valve is opened, and the system needs to collect and store the puree with alcohol concentration of Luzhou-flavored (75%~55%)/sesame-flavored (≥20%) in the tank. Carry out grading, and when the corresponding alcohol content range is reached, the corresponding valve is opened for grading collection. When the concentration meter detects that the alcohol content is lower than the minimum range value, the valve is closed. Remarks: Because different brewing processes require different degrees of alcohol extraction, the system can directly set and extract alcohol degrees according to the actual needs of the winery.

The third section: Tail wine collection, when the alcohol content is less than the minimum setting, close all valves. Open the tail valve for effective collection.

FAQ

Alcohol density is measured using specialized tools like alcohol density meters or hydrometers. They are dipped into the liquid, and based on how they float, the alcohol content is determined.

The density meter, often called an alcohol density meter, is a tool designed specifically to measure the alcohol content of a liquid. It shows the percentage of alcohol by volume when it’s immersed in the liquid.

An alcohol density meter measures the alcohol content in a liquid. A hydrometer measures the relative density of a liquid compared to water. While both can be used in brewing and distillation, the alcohol meter is more precise for determining alcohol content.

You can check alcohol percentage at home by using an alcohol density meter or a hydrometer. After preparing your brew or distillate, immerse the tool in the liquid. The reading will tell you the alcohol content. Ensure to follow the instructions for accurate results.

Coriolis Density Meter-Concentration Meter

Posted on August 30, 2023 by KimGuo11

Coriolis Density Meter is also called Coriolis Concentration Meter. It adopts the principle of operating under the special law of the Coriolis force of the moving liquid. The Coriolis force is related to the density of the liquid, so the density value of the liquid is measured. The concentration is calculated from the density and temperature. The Coriolis principle has high stability, high precision, good long-term stability, and no drift caused by the sensor. Coriolis Density Meter is used in many industries like oil refining, sugar, paper, and chemical. It measures weak acid-base solutions in the wine, salt, and printing industries.

RFQ

Features of Coriolis Density Meter

The 4-wire transmitter with an integrated structure has no moving parts and is easy to maintain; the 4-wire transmitter has 4-20mA output;
Real-time display of five-digit density value, four-digit decimal (one digit for concentration), real-time indication of current and temperature;
You can directly enter the instrument menu to set parameters;
It is easy to install and use, and the reading can be displayed when the flange surface touches the liquid;
It is used for fluid or static liquid, suitable for pipeline installation or installation on container wall, etc.;
Density and concentration have the functions of pure water calibration, fine-tuning of measured value and temperature compensation;
Continuous online measurement without process interruption, can be directly used for production process control;
All parts in contact with liquid are made of 316 stainless steel or polytetrafluoroethylene, which is safe, hygienic and has good corrosion resistance;
Measuring high viscosity and non-Newtonian flow can also measure uniform multiphase flow;

Technical Parameters

Accuracy	±0.001g/cc	±1.0kg/m3
The scope of work	0～3g/cc	0～3000kg/m3	0～187.4 lb/ft3
Repeatability	±0.001g/c	±0.1kg/m3	±0.006lb/ft3
Process temperature effect (corrected)	±0.001%g/cc）	±0.1kg/m3	(per °C)
Process pressure effect (corrected)	can be ignored
(1) The above accuracy is applicable to the calibration range of 0.6-1.25g/cc (600-1250kg/m3) (2) When a long rod is used, the maximum viscosity of the liquid can reach 500CP, but if it is used, the maximum viscosity of the liquid can reach 20000CP. (3) Temperature effect refers to the maximum measurement deviation caused by the process fluid temperature deviating from the factory calibration temperature. (4) Pressure effect is defined as: the change in sensor flow and density due to process pressure deviation from calibration pressure.

Process temperature	–10℃～+60℃
Ambient temperature	–10℃～+85℃
Temperature Coefficient	O.1kg/m3/℃ (after correction)
Built-in temperature sensor	PT100
Wetted parts	Stainless steel 316L, titanium, etc. can be customized
Shell	IP65, aluminum alloy
Tine polishing	Standard, PFA coated or electropolished
Working pressure	3000psi (207bar)
Working pressure	1450psi (100bar)
Test pressure	Tested at 1.5 times the maximum working pressure
Actual maximum working pressure is limited by process connection rating
Process connection type	flange
	Clamp
	thread
Explosion-proof certification	Ex d Ⅱ B T6 Gb
Power requirements	24VDC,50mA
Output	Four-wire system, 4-20mA transmission 4-20mA, optional RS485-Modbus RTU communication
Viscosity range	0-20000CP

Fluid and Material Compatibility

Type	Name	Molecular formula	Concentration (%)	316L	Hastelloy	Titanium alloy	zirconium	PTFE
Acid	Hydrochloric acid (without hydrofluoric acid)	HCI	0-40	×	○	×	☆	☆
	sulfuric acid	H2SO4	0-50	○	☆	○	☆	☆
		H2SO4	50-75	×	○	×	○	☆
		H2SO4	75-98	○	☆	○	○	☆
	nitric acid	HNO3	0-100	○	○	○	○	☆
	phosphoric acid	H3PO4	0-98	×	×	×	×	☆
Alkali	sodium hydroxide	NaOH	0-50	☆	☆	☆	○	☆
	Potassium hydroxide	KOH	0-50	☆	☆	☆	○	☆
	Calcium hydroxide	Ca（OH）2	0-50	☆	☆	☆	○	☆
Salt	Sodium chloride	NaCI	0-50	×	☆	☆	☆	☆
	ammonium chloride	NH4CI	0-50	×	☆	☆	☆	☆
	ammonium sulfate	(NH4)2SO4	0-50	×	☆	☆	☆	☆
Others	carbamide	(NH2)2CO	0-100	☆	☆	○	☆	☆
	sodium hypochlorite	NaOCI	0-16	×	○	×	☆	☆
	hydrogen peroxide	H2O2	0-90	☆	☆	○	☆	☆
☆Recommended ○ Use under specific concentration and temperature limits × Do not use

Featured Types of Coriolis Density Meters-Concentration Meters

Coriolis density meter industrial applications

The Coriolis density meter is based on the principle of special laws under the action of the Coriolis force of the moving liquid. The Coriolis force is related to the density of the liquid, so as to measure the density of the liquid; then according to the relationship between density and concentration The relational table obtains concentration values at a temperature of 20°C.

Coriolis density meter can be widely used in the detection of oil refining and blending in the petrochemical industry. The food industry is used in sugar industry, vegetable oil and beverage processing, etc. Production site, paper industry, measurement of weak acid-base solution in chemical industry, wine industry, salt, printing and dyeing and other industries. Due to the large flow pipe, it is especially suitable for occasions that are not dry or viscous. It is suitable for pipe installation.

Medium limitation		Contain gas	Maximum Liquid Viscosity
Regular liquid	Acid and alkali solution
316L	Titanium	Contain gas Generally do not use	20000CP

Typical application conditions:

Petroleum and petrochemical industry	— Quality Control — Continuous Online
Wine industry	— Quality control — Continuous online inspection
Organic and Inorganic Chemical Materials	— Acid/base concentration control
Pharmaceutical Industry	— Traditional Chinese medicine concentration, alcohol recovery
Battery industry	— Concentration of lithium hydroxide, electrolyte, sulfuric acid solution
Mineral processing	— Clays, carbonates, silicates

Optical Density Meter-Liquid Densitometer

Posted on August 28, 2023 by KimGuo11

Optical Density Meter is a Liquid Densitometer. Using the propagation law of the spectrum in the liquid, sampling is carried out through a high-resolution spectral sensor. The analysis and calculation process is carried out by the software to obtain the regularity of the concentration. Then through temperature compensation, the concentration of various liquids or liquid mixtures can be measured. The Optical Density Meter is suitable for installation in pipes or on vessel walls. It is widely used to measure the density of liquids with certain transparency. Some examples are ammonia water concentration, Brix sugar refining (sugar concentration). Other examples include sodium hydroxide, potassium hydroxide, sodium carbonate, carbamide, ammonia water, and hydrogen peroxide.

RFQ

Features of Optical Density Meter

Fully integrated “plug and play, maintenance-free” digital measurement for monitoring and control;
Provide materials including 316L, PTFE, etc.;
continuous measurement;
No moving parts, less maintenance;
Concentration 4-20mA output;
Provide temperature sensor;
Suitable for a variety of acids, alkalis, organic solutions;
Not easily affected by temperature and flow rate;
Suitable for installation in tanks and pipelines;
A small amount of solids and air bubbles are allowed;
Passed explosion-proof certification;

Technical Parameters

Accuracy	±0.5%
The scope of work	0~100% (20°C), according to the usage, it can be calibrated to a certain range
repeatability	±0.2%
Process temperature effect (corrected)	±0.001% (per ℃)
Process pressure effect (corrected)	can be ignored
Process temperature	–10℃～+60℃
Ambient temperature	–10℃～+45℃
Temperature Coefficient	O.1%/m3/℃ (after correction)
Built-in temperature sensor	temperature chip
Wetted parts	316L, polytetrafluoroethylene
Glass	Acid and alkali resistance
Shell	IP65, aluminum alloy
Working pressure	0.8MPa
Test pressure	Tested at 1.5 times the maximum working pressure
Actual maximum working pressure is limited by process connection rating
Process connection type	flange
Process connection type	Clamp
Explosion-proof certification	Ex d ⅡC T6 Gb
Power requirements	24VDC,50mA
Output	Four-wire system, 4-20mA
Viscosity range	＜5000MPa.s

Fluid and Material Compatibility

Type	Name	Molecular formula	Concentration (%)	316L	Hastelloy	Titanium alloy	zirconium	PTFE
Acid	Hydrochloric acid (without hydrofluoric acid)	HCI	0-40	×	○	×	☆	☆
	sulfuric acid	H2SO4	0-50	○	☆	○	☆	☆
		H2SO4	50-75	×	○	×	○	☆
		H2SO4	75-98	○	☆	○	○	☆
	nitric acid	HNO3	0-100	○	○	○	○	☆
	phosphoric acid	H3PO4	0-98	×	×	×	×	☆
Alkali	sodium hydroxide	NaOH	0-50	☆	☆	☆	○	☆
	Potassium hydroxide	KOH	0-50	☆	☆	☆	○	☆
	Calcium hydroxide	Ca（OH）2	0-50	☆	☆	☆	○	☆
Salt	Sodium chloride	NaCl	0-50	×	☆	☆	☆	☆
	ammonium chloride	NH4Cl	0-50	×	☆	☆	☆	☆
	ammonium sulfate	(NH4)2SO4	0-50	×	☆	☆	☆	☆
Others	carbamide	(NH2)2CO	0-100	☆	☆	○	☆	☆
	sodium hypochlorite	NaOCI	0-16	×	○	×	☆	☆
	hydrogen peroxide	H2O2	0-90	☆	☆	○	☆	☆
☆Recommended ○ Use under specific concentration and temperature limits × Do not use

Working principle of Optical Density Meter

Imagine you have a flashlight. When you shine it through a clear glass of water, almost all the light passes through. But if you shine it through a dark-colored drink, less light will pass through because the drink is denser.

An Optical Density Meter works a bit like that flashlight. It uses light to see how “thick” or “dense” a sample is. Here’s how:

Light Source: The meter has a light that shines through the sample.
Sample: This is what you want to test, like a liquid.
Detector: On the other side of the sample, there’s a part that catches and measures the light that comes through.
If a lot of light passes through, the sample is less dense. If only a little light passes through, the sample is more dense.

The Optical Densitometer is Based on the Propagation Law of the Spectrum in the Liquid. Sampling is Performed by High-Resolution Sensor. Analyzed AN d processed by software. Obtain the Regularity of the Concentration. The then Through Temperature Compensation. various liquids or liquid mixtures.

Medium limit		bubbles, flow rate	Maximum Liquid Viscosity
Particles	transparent
Trace particles	clear, pure liquid	a small amount of bubbles	5000MPa.s
		Velocity > 1.5m/s

Video: https://www.youtube.com/embed/N8DOxmFBrhE

Optical Density Meter Industrial Applications

Imagine factories where they mix and create things like paint, drinks, or even medicine. They need to make sure everything is just right – not too thick, not too thin, and with the right amount of ingredients. That’s where the Optical Density Meter comes in handy.

In the petrochemical industry, it can be widely used in the detection of petroleum, oil refining and oil blending;
In the food industry, it is used in the production sites of grape juice, tomato juice, fructose syrup, vegetable oil and soft drink processing;
dairy industry;
paper industry;
Measurement of alkaline solution;
brewing alcohol;
Printing and dyeing industry: measure ammonia concentration.
Organic and Inorganic Chemical Materials: Sodium Hydroxide.
Measurement of chemical carbamide, detergent, ethylene glycol, acid-base and polymer density.
It can also be used in mining brine, potash, biopharmaceutical and other industries.
Brewing and Beverages: Companies that produce beverages such as fruit juice or beer use this tool to check sugar content. More sugar means the drink may be sweeter and thicker.
Pharmaceutical Manufacturing: When companies manufacture pharmaceuticals, they need to ensure that the mixture is perfect. A gauge can help check this.
Paint making: Have you ever noticed that some paints are thick and some are thin? The factory uses a densitometer to get just the right consistency.
Water Treatment: This meter can help check how clean the water is. If the water is too “thick” and contains unwanted material, more cleaning may be required.
Agriculture: Farmers use it to check the health of plants. If plants are not healthy, they may not be able to absorb enough light. Meters can provide relevant clues.

These are just a few examples. There are many places where knowing how “thick” or “dense” something is can be very useful, and that’s why the Optical Density Meter is an important tool in industries.

Typical applications:

Denitrification industry	— Measure ammonia concentration (0~30%)
Wine industry	— Quality control — Continuous online inspection
Organic and Inorganic Chemical Materials	— Acid/base concentration control
Pharmaceutical Industry	— Traditional Chinese medicine concentration, alcohol recovery
Battery industry	— concentration of lithium hydroxide, electrolyte, sulfuric acid solution
Mineral processing	Clay, carbonate, silicate

FAQ

A densitometer measures how “thick” or “dense” something is, like a liquid or a film. It helps in making sure things are the right consistency.

This is a special tool that checks how much light can pass through something, like a liquid. If less light passes through, it means the liquid is denser.

Both measure how “dense” something is, but in different ways. A density meter usually measures the weight of a liquid, while a densitometer measures things like how light passes through.

Optical density is measured by shining a light through something (like a liquid) and seeing how much light comes out on the other side. The less light that comes out, the higher the optical density.

They’re closely related! Absorbance is about how much light is “soaked up” by something. OD, or Optical Density, is about how much light passes through. So, if something has high absorbance, it’ll have a high OD too.

This method is used in labs and industries to find out how dense a liquid is by checking how much light can pass through it. It helps in making drinks, medicines, and studying cells, among other things.

It’s a way to describe how much light can go through something. If a liquid doesn’t let much light through, it has a high optical density. If it lets a lot of light through, it has a low optical density.

Handheld Density Meter-Portable Micro Vibrator Digital Density Meter for Petroleum Products

Posted on August 26, 2023 by KimGuo11

Handheld Density Meter is a portable device used to measure the temperature and density of liquids in tanks. Our Handheld Density Meter is a portable micro-vibrating cylinder digital density meter. It is mainly used to measure the concentration of petroleum products online. Of course, it is also possible to measure the concentration of concentrated ammonium sulfate, etc.

RFQ

Micro Vibrator Handheld Density Meter Features:

Portable micro-vibrator digital density meter, also known as Handheld Density Meter, adopts portable and hand-held design. Used to measure the temperature and density (concentration) of liquids in tanks. After the measurement is completed, the data will be displayed automatically. Portable design, easy to operate and easy to carry.

Handheld density meter with digital LCD screen and various display contents.
Wide measurement range, simple operation, high measurement accuracy and fast test speed.
The pure water density meter is easy to calibrate, and standard substance calibration can be performed.
The sample demand is small, only about 100ml liquid is needed

Technical Parameters:

Density range: 0~2g/ml(g/cm3)
Density accuracy: 0.003 g/ml ,
Resolution: 0.0001,
Repeatability: 0.0005
Medium temperature: 0~100℃ (liquid fluidity)
Ambient temperature: -40~85℃
Temperature Compensation: Automatic
Material of internal parts placed in the liquid: stainless steel 316L, ceramics, zirconia, etc.
Tine Polish: Standard, PFA Coated or Electropolished

Working Principle

The sensor of the Micro Vibrator Handheld Density Meter is designed according to the principle of component vibration. This vibrating element is similar to a two-toothed tuning fork, the body of which is vibrated by a piezoelectric crystal located at the root of the tooth. The frequency of the motion is detected by another piezoelectric crystal. Through phase shifting and amplification circuit, the fork body is stabilized on the natural resonant frequency. When the medium flows through the fork, the resonance frequency changes due to the change of the medium quality.

Working principle:
The density and vibration frequency of the medium conform to the following mathematical formula: D=K0+K1T+K2T2

Formula:
D = Density of the measured medium
T = natural frequency of the fork
T2=The frequency when the measured medium flows through the fork body

K0, K1, K2=constant According to this formula, the accurate medium density value can be calculated through the electronic processing unit.

Technical Advantages

Tuning fork vibrating density meter with microprocessor-based electronic switching unit combining signal processing, calculation and diagnostic functions.

In addition to convincing measurement accuracy and reliability. While measuring density and temperature, parameters such as basic density, °API, Brix, concentration percentage, mass percentage, volume percentage, and specific gravity can also be calculated.

Handheld Density Meter Applications

The Micro Vibrator Handheld Density Meter is a versatile instrument crucial for several industries. It works by using tiny vibrations to measure the density of fluids.

Key Industries:

Petroleum and Chemical: Monitoring the quality of fuel and other chemical products.
Brewing: Ensuring the consistency and quality of alcoholic beverages.
Food Production: Checking the density of ingredients and final products for quality control.
Pharmaceuticals: Ensuring drug formulations are consistent and up to standards.
Mineral Processing: Used in the assessment of clays, carbonates, silicates, and more.

Applications:

Detecting the interface in multi-product pipelines.
Checking the density of mixed fluids.
Monitoring reaction endpoints in reaction kettles.
Interface detection in separators.

Case Examples: Handheld density meter for petroleum products

Oil Pipeline Interface Detection:

Scenario: When transporting different types of oil in a single pipeline, it’s crucial to detect when one type ends and another begins.
Use of Portable Density Meter: The meter helps in accurate detection, preventing mixing and ensuring product purity.
Parameters: Crude oil density: around 0.8 to 0.93 g/cm³; Diesel density: 0.8 to 0.85 g/cm³.

Fuel Quality Assurance at Refineries:

Scenario: A major refinery needs to regularly check the quality of its gasoline.
Use of Handheld Density Meter: By using the meter, technicians can instantly measure the density at various stages of production.
Parameters: Desired density range: 0.725 to 0.775 g/cm³.

Lubricant Production Quality Control:

Scenario: A factory produces motor lubricants and wants to maintain a consistent product.
Use of Portable Density Meter: By regularly checking the density, they can ensure the lubricant has the right balance of additives and base oil.
Parameters: Desired density range: 0.85 to 0.89 g/cm³.

So, you should know that the Micro Vibrator Handheld Density Meter is an important tool, especially in the field of petroleum products.

By ensuring accurate and consistent measurements, it’s an invaluable tool for quality and process control.

More Digital Density Meters and Detecting Instruments

**Online Density Meter – Differential Pressure Type**

**Optical Density Meter-Liquid Densitometer**

**Coriolis Density Meter-Concentration Meter**

**Online Alcohol Density Meter-Alcohol Concentration Meter**

**Split Type Density Meter for Liquids**

FAQ

A density meter for fuel oil is a tool that measures how compact or dense the fuel oil is.

A density meter or a hydrometer is used to measure the density of oil.

A portable density meter is used to quickly check the density of liquids on-the-go, without needing a big machine.

The DMA35 is a specific type of portable density meter, mainly used for quick measurements in the field.

A hydrometer is a manual tool that floats in a liquid to measure its density. A digital density meter gives electronic readings, which can be more accurate and faster.

A density meter measures the compactness of liquids. A densitometer usually checks the darkness or lightness of materials, like photographic films.

The primary instruments for measuring density are the density meter and the hydrometer.

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The Handheld Density Meter, Micro Vibrator Digital Density Meter for Petroleum Products, is a game-changer in the industry. Whether it’s for quality control in refineries, detecting oil types in pipelines, or ensuring consistent lubricants, this tool is essential. Quick, accurate, and user-friendly, it plays a pivotal role in maintaining the highest standards in petroleum-related operations.

If you’re in need of such a tool or have specific requirements, look no further! We, at Sino-Inst, pride ourselves on being experienced manufacturers and suppliers in this field. Our rich expertise ensures that you receive the best product tailored to your needs. Interested in custom solutions? We’ve got you covered. Reach out today, and let’s enhance your petroleum processes together. Contact Sino-Inst now!

Request a Quote

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KimGuo11

drurylandetheatre.com

Portable Density Meter-Portable Tuning Fork Density Meter

Posted on August 21, 2023 by KimGuo11

Portable Density Meter is used to measure the density or concentration of liquid media in tanks and pipes. Also called Portable Tuning Fork Density Meter or handheld density meter. Different from the structure of Anton Paar DMA35 Portable Density Meter, our Portable Density Meter is equipped with a handheld host and a submersible probe. It can meet various measurement requirements of users for density, concentration and solid content.

RFQ

Features of Portable Density Meter

Used to measure the temperature and density (concentration) of liquids in tanks. The data will be displayed automatically after the measurement is completed.
Portable design, easy to operate and easy to carry.
Wide measurement range, suitable for continuous and uninterrupted measurement. The measurement accuracy is high and the test speed is fast.
Low maintenance, no moving parts, high durability.
Built-in temperature sensor to monitor the temperature of the liquid to be tested at all times.
Provide customization including 316L, titanium and other materials
Support the calculation of density and standard concentration
Automatically provide temperature compensation, with automatic calibration function

Technical Parameters

Power supply: Built-in 3.7VDC lithium battery with rechargeable battery;
Concentration range: 0~100% (20°C), according to the usage, it can be calibrated to a certain range;
Density range: 0~2g/ml, according to the usage, it can be calibrated to a certain range;
Concentration accuracy: 0.5%, resolution: 0.1%, repeatability: 0.2%;
Density accuracy: 0.003 g/mL , resolution: 0.0001, repeatability: 0.0005;
Medium temperature: 0~60°C (liquid state) Environment degree: -40~85°C;
Medium viscosity: <2000mpa·s;
Response speed: 2S

Physical Iindicators

Interface material: stainless steel
Cable material: anti-corrosion silicone rubber
Wetted parts: 316 stainless steel, special requirements are available

Product Performance

The accuracy	±0.003g/cm3	±3.0kg/m3
Working scope	0至3g/cc	0至3000kg/m3
Repeatability	±0.001g/cc	±1kg/m3
Process temperature effect (corrected)	±0.0005g/cm3	±0.5kg/m3

Temperature Specification

Process temperature	–20°C +100°C
Ambient temperature	–20℃ +85℃
Temperature Coefficient	0.1kg/m3/°C (after calibration)
Built-in temperature sensor	PT100

Structural Materials

Wetted Parts: Stainless Steel 316L, Hastelloy, Zirconium
Tine Polish: Standard

Liquid Viscosity Range

Viscosity requirement: < 1000MPa

Liquid and Material Compatibility

Type	Name	molecular formula	Concentration (%)	316L	Hastelloy	Zirconium
Acid	Hydrochloric acid (without hydrofluoric acid)	HCI	0-40	×	○	☆
	sulfuric acid	H2SO4	0-50	○	○	☆
		H2SO4	50-75	×	○	○
		H2SO4	75-98	○	○	○
	nitric acid	NHO3	0-100	○	○	☆
	phosphoric acid	H3PO4	0-98	○	☆	×
Alkali	sodium hydroxide	NaOH	0-100	○	☆	×
	Potassium hydroxide	KOH	0-50	○	☆	☆
	Calcium hydroxide	Ca（OH）2	0-50	○	☆	○
Others	carbamide	(NH2)2CO	0-100	☆	☆	☆
	sodium hypochlorite	NaOCI	0-16	○	○	×
	hydrogen peroxide	H2O2	0-90	☆	☆	×
☆ Recommended O Use under specific concentration and temperature limits X Do not used

Dimensions

Portable Tuning Fork Density Meter working principle

The tuning fork density/concentration meter is used to measure the density or concentration of liquid media. Density or concentration measurement is an important process control in the product manufacturing process.

Tuning fork densitometers can be used as indicators for other quality control parameters such as solids content or concentration values. It can meet various measurement requirements of users for density, concentration and solid content.

A tuning fork portable density meter that uses an acoustic frequency signal source to excite the metal fork. And make the fork vibrate freely at the center frequency. This frequency correlates with the density of the contacting liquid. Therefore, the density of the liquid can be measured by analyzing the frequency, and then the temperature compensation can eliminate the temperature drift of the system.

As for the concentration, the concentration value at a temperature of 20°C can be calculated according to the relationship between the corresponding liquid density and concentration.

This device integrates density, concentration and Baume into one. And has a variety of liquids to choose from.

Particle limit		Gas	Maximum Liquid Viscosity
Particle diameter	Suspended particles%
<10 microns	＜=40%	Generally do not use	＜1000cp
10~50 microns	＜=20%

Applications

Portable density meters have a wide range of industrial applications across different sectors, including the petrochemical, brewing, food, pharmaceutical, mineral processing, oil, chemical, food and beverage, battery and electrolyte, ammonia preparation, laboratory, and desulfurization industries. They are specifically used for interface detection in multi-product pipelines, density detection of stirred mixtures, end point monitoring of reactors, and interface detection of separators.

Some specific examples of their use include:

In the petrochemical industry, portable density meters are used to detect interfaces in multi-product pipelines and to monitor the density of fuel blends.
In the food industry, portable density meters are used to monitor the density of food products during production, ensuring consistent quality.
In the pharmaceutical industry, portable density meters are used to measure the density of different materials during drug formulation.
In the battery and electrolyte industry, portable density meters are used to measure the density of electrolyte solutions, which is important for battery performance.

Overall, portable density meters are a versatile tool for a wide range of industries, helping to ensure consistent quality and optimize production processes.

More Digital Density Meters

**Handheld Density Meter- Digital Density Meter for Petroleum Products**

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Portable Density Meter is used to measure the density or concentration of liquid media in tanks and pipes. After the measurement is completed, the data will be displayed automatically. Portable design, easy to operate and easy to carry.

Density or concentration measurement is an important process control in the product manufacturing process. Our Portable Density Meter – Portable Tuning Fork Density Meter can be used as an indicator of other quality control parameters like solids content or concentration values. It can meet various measurement requirements of users for density, concentration and solid content.

We, Sino-Inst, are a professional density meter manufacturer. We manufacture and supply Portable Density Meter, Online Tuning Fork Density Meter, Differential Pressure Density Meter, Split Density Meter, Coriolis Density Meter, etc.

If you need to monitor density or concentration, please feel free to contact Sino-Inst sales engineers.

Request a Quote

Please enable JavaScript in your browser to submit the form

KimGuo11

drurylandetheatre.com

What Is Density Meter? and Types

Posted on August 19, 2023 by KimGuo11

What Is Density Meter?

Density meters are instruments that measure the density of a sample liquid or gas. The density meter is also known as an online liquid density transmitter. It can also be called a densitometer, density sensor, density analyzer, or inline hydrometer.

The industrial density meter is used to monitor and control the concentration and density of liquids or gases in production. This instrument is reliable and easy to use. It generates a 4-20mA or RS485 signal. The signal can be calibrated and monitored remotely.

RFQ

Types of Density Meters

How to classify and select industrial density meters?

There are five different kinds of densitometers: tuning fork, Coriolis, differential pressure, radioisotopic, and ultrasonic. Here’s a brief introduction.

1. Tuning fork density meter

The sensor is designed according to the principle of vibration. This vibrating element resembles a two-toothed tuning fork. The fork is vibrated by a piezoelectric crystal located at the root of the tooth. The frequency of the vibration is detected by another piezoelectric crystal. Through phase shifting and amplification circuits. The fork is stabilized at the natural resonant frequency. The liquid flowing through the fork causes the vibration to change. This change in vibration alters the resonant frequency. The electronic processing unit calculates the accurate density value.

Advantages:

Simple installation, plug and play, maintenance-free. The density of mixed media containing solids or air bubbles can be measured.

Disadvantages:

The density meter is not ideal for measuring crystallization and fouling media.

Typical application:

Petrochemical industry, food and wine industry, pharmaceutical industry, organic and inorganic chemical industry and mineral processing (such as clay, carbonate, silicate, etc.).

This is mainly used to detect interfaces in pipelines and control concentrations in various industries. This tool is used in brewing to measure wort concentration and in controlling acid-base concentrations. It is also used to refine sugar and detect the density of stirred mixtures. Reactor end point detection, separator interface detection, etc.

2. Coriolis online density meter

Working principle:

The measuring tube vibrates continuously at a certain resonant frequency. The vibration frequency changes with the density of the fluid. Therefore, the resonant frequency is a function of the fluid density. The density of the fluid can be accurately obtained by measuring the resonant frequency. The density measurement can also directly measure the fluid’s mass flow rate in the closed pipeline. This is done using the principle of Coriolis force.

Advantages:

The mass flowmeter can measure mass flow, density and temperature at the same time. Moreover, the measurement accuracy is high and the operation is stable. Therefore, it is widely used in the flow and density detection and control of the production process in the petrochemical field.

Disadvantages:

The price is relatively high, and it is easy to wear and block when used to measure granular media.

Typical application:

This device has many uses. In the petrochemical industry, it can detect oil levels and interfaces. In the food industry, it can be used for processing grape juice, tomato juice, and more. It also has applications in the dairy and paper industries. Additionally, it can test various chemical substances. It can also be used in mining brine, potash, natural gas, lubricating oil, biopharmaceutical and other industries.

3. Differential pressure density meter

Measuring principle:

The differential pressure density meter is the gravity difference △P=ρgh generated by the liquid column. When h remains constant, the differential pressure value measured by the transmitter is divided by gravity and length to find the density.

Advantages:

The differential pressure density meter is a simple, practical and cost-effective product.

Disadvantages:

This product has some drawbacks. It needs to be installed vertically, has a large margin of error, and the measurements it provides can be unstable.

Typical application:

The sugar industry and the winemaking industry both produce different types of liquids. These liquids include fruit juice, syrup, and grape juice. They also produce alcohol with different strengths, such as ethane and ethanol.

Dairy industry: condensed milk, lactose, cheese, dry cheese, lactic acid, etc.;

Mining: coal, potash, brine, phosphate, the compound, limestone, copper, etc.;

Oil refining: lubricating oil, fragrance, fuel oil, vegetable oil, etc.;

Food processing: tomato juice, fruit juice, vegetable oil, starch milk, jam, etc.;

Pulp and paper industry: black pulp, green pulp, pulp cleaning, evaporator, white pulp, caustic alkali, etc.;

Chemical industry: acid, caustic soda, carbamide, detergent, polymer density, ethylene glycol, sodium chloride, sodium hydroxide, etc.;

Petrochemical: natural gas, oil and gas washing, kerosene, lubricating oil, oil/water interface.

4. Radioactive isotope density meter

Working principle:

The instrument of the radioisotope density meter is equipped with a radioisotope radiation source. The radiation detector detects the radioactive radiation, like gamma rays. It receives the radiation after passing through the measured medium. When the thickness of the medium is constant, the attenuation of rays is only a function of the material density of the medium. The density value can be obtained through the calculation inside the meter.

Advantages:

The radioactive densitometer can measure the material’s density and other parameters inside the container. It doesn’t need to touch the object being detected. This is especially useful in harsh conditions like high temperature, high pressure, corrosion, and toxicity.

Disadvantages:

The pipeline’s inner wall gets worn and scaled, leading to measurement errors, difficult approvals, and strict management.

Typical application:

This device is commonly used in various industries like petrochemical, steel, and mining. It measures the density of liquids, solids, and substances like coal powder and cement slurry. This device is good for online use in industrial and mining companies. It is especially useful for measuring density in tough, hard, corrosive, hot, and high-pressure conditions.

5. Ultrasonic density (concentration) meter

Working principle:

Ultrasonic density (concentration) meter is based on the transmission speed of ultrasonic waves in liquid to measure the density of liquid.

Theory and experiments have shown that the speed of ultrasonic waves in a liquid depends on its concentration and temperature. Changing the concentration of the liquid will cause the speed of the waves to change as well.

The speed of ultrasonic waves in liquid depends on its elasticity and density. Therefore, changes in the transmission speed at a specific temperature indicate changes in concentration or density.

In this way, when the ultrasonic sensing unit of the meter gives an ultrasonic signal and measures its transmission speed in the process liquid and the current temperature of the liquid, the meter can accurately calculate the concentration, temperature, speed and other related data. The current concentration or density value.

Advantages:

Ultrasonic testing is not affected by the color, dirtiness, or flow of the medium.

Disadvantages:

The price of this product is relatively high, and the measurement is greatly affected by air bubbles. There are also limitations of its own circuit and environmental interference on the industrial site. The accuracy of this product needs to be improved.

Typical applications:

Industries such as chemical, petrochemical, textile, semiconductor, steel, food, beverage, pharmaceutical, winery, paper, and environmental protection. This sentence is quite long and complex, making it difficult to understand. Let’s break it down into shorter, simpler sentences while still conveying the same meaning and details.

The main purpose is to measure the concentration or density of different substances. These substances include acid-base salts, chemical raw materials, various oil products, fruit juice, syrup, beverages, and wort.

Also, it measures different wines, materials for making wine, things added to wine, oil products, changing how materials are moved, separating oil and water, and monitoring different material parts.

Featured Density Meters

**Portable Density Meter-Portable Tuning Fork Density Meter**

How to Select the Right Density Meter?

How to choose the right density meter? Based on our Sino-Inst’s many years of experience in density measurement. We have sorted out the selection considerations for industrial density meters. Selecting the right density meter requires consideration of the following factors:

1. Measuring medium: What are you measuring? Liquids, gases, or both? Sludge, sediment? Make sure to choose a density meter that is compatible with your sample type.

2. Measuring range: Determine the density range of the substance you need to measure. Different densitometers have different measuring ranges. Make sure to choose an instrument that covers the range you need.

3. Measurement accuracy: Select a density meter according to your accuracy requirements for density measurement. Certain applications need very accurate density measurements, while others can tolerate less accuracy.

4. Use environment: Consider the environment in which you will use the density meter. If you need to measure in harsh conditions. Such as high temperature or high pressure environment, you need to choose a density meter that can work well under these conditions.

5. Functions and characteristics: Density meters may have different functions and characteristics. Choose the functions and features that suit you. Consider things like automatic temperature compensation and data logging and storage.

6. Budget: Finally, consider your budget constraints. Density meters come in a wide range of prices. Choose a cost-effective and reliable density meter according to your budget.

To choose a density meter, refer to the manufacturer’s product specifications and technical parameters. This can help you make more informed decisions and find the right density meter for your needs.

FAQ

Density meters help figure out how thick or thin a substance is. Industries like food, medicine, and fuel use them to make sure their products are top-notch and safe.

Think of a densimeter as a special scale. It checks how much space a sample takes up and uses that info to tell its density.

It’s often referred to as a “densimeter.” Both names mean the same thing and point to a tool that measures density.

In simple terms, the theory is about measuring how much a certain amount of substance weighs and then figuring out how tightly packed its particles are. This helps determine if the substance is dense (thick) or not dense (thin).

Radar Water Level Sensor 0.05m～35m ~70m~120m

Posted on August 14, 2023 by KimGuo11

Radar water level sensor is a commonly used water level measuring instrument, which uses radar technology to measure the water level of reservoirs, rivers, lakes, dams, deep wells, etc. The Radar water level sensor supplied by Sino-Inst is a 76-81GHz frequency modulated continuous wave (FMCW) radar product, which supports four-wire and two-wire applications. Multiple models, the maximum range of the product can reach 120m, and the blind zone can reach 8 cm. There are PP material and stainless steel material can be customized. Support RS485 Modbus and other signal output.

RFQ

Radar Water Level Sensor Technical Specifications

Measuring medium: water
Measuring range: 0.05m～35m ~70m~120m
Process connection: G1½A / 1½NPT thread / bracket
Process temperature: -40～80℃
Process pressure: -0.1～0.3 MPa
Antenna size: 42mm lens antenna
Antenna material: PTFE
Accuracy: ±1mm
Protection class: IP67
Center frequency: 76GHz~81GHz
Launch angle: 6°
Power supply:
Two-wire system/DC24V
Four-wire system/DC24V
Four-wire system/AC220V
Shell: aluminum (with display)
Signal output: RS485 Modbus
Display: with display/without display

Main advantages:

Based on the self-developed CMOS millimeter wave RF chip, a more compact RF architecture is achieved. Higher signal-to-noise ratio and smaller blind spots.
5GHz working bandwidth enables the product to have higher measurement resolution and measurement accuracy.
The narrowest 3° antenna beam angle, the interference in the installation environment will have less impact on the instrument. The installation is more convenient.
The wavelength is shorter and has better reflection characteristics on solid surfaces. Therefore, no special universal flange is required for aiming.
Support remote debugging and remote upgrade. Reduce waiting time and improve work efficiency.
Support mobile phone Bluetooth debugging. It is convenient for on-site personnel to maintain work

Communication and Debugging

The instrument can be debugged through the LCD on site. It can also be debugged on the PC side with the optional host computer software.
The communication between the radar instrument and the PC is carried out in the following ways:

USB to RS485 serial cable (four-wire system);
USB to TTL serial cable (two-wire system);
USB to Hart-modem (two-wire system) for communication.
Debugging via mobile phone Bluetooth makes on-site debugging safer and more convenient.
4G network, through the remote module, for remote debugging.

Radar Water Level Sensors Applications

Radar Water Level Sensor Measuring Culverts

A culvert is an engineering structure used to solve the intersection of rivers, streams and other water bodies in road or rail traffic. It works by creating a channel under a body of water that allows the flow of water to flow through it. While maintaining road or rail connectivity. Water level monitoring is crucial in the design and maintenance of culverts.

As a commonly used measuring device, Radar Water Level Sensor has its unique advantages, which can accurately and real-time monitor the water level changes of culverts.

Through the monitoring and analysis of the water level data of the culvert, the water level change of the culvert can be understood in time.

For example, in the rainy season, if the water level of the culvert exceeds a certain safe water level. Engineers can take timely action. Such as increasing the drainage capacity of culverts to ensure smooth and safe traffic.

In addition, water level data can also provide important reference information when maintaining and repairing culverts. Helps engineers determine if culverts have problems or require maintenance.

Application of Radar Water Level Sensor in Shoal

There are several aspects to the application advantages of Radar Water Level Sensor in shoals.

First of all, Radar Water Level Sensor uses microwave signals to measure, which has the characteristics of high precision. It can realize fast and accurate measurement of shoal water level.

Secondly, Radar Water Level Sensor is not affected by weather conditions. Water level measurement can be carried out in various harsh environments, such as rainy and snowy weather, night and so on.

At the same time, the Radar Water Level Sensor is not affected by physical disturbances such as currents, wind and waves. It can realize stable and accurate water level measurement.

Finally, Radar Water Level Sensor is suitable for the measurement of various water environments, and can adapt to various water environments such as shoals, rivers, and lakes.

Radar Water Level Sensor measures river course

As an instrument for measuring river channels, Radar Water Level Sensor uses high-frequency pulse waves for measurement, which has the advantages of high precision and high resolution.

Accurate and real-time monitoring of the water level of the river can be realized, and the precision and accuracy of water level monitoring and control are effectively improved.

In addition, the non-contact measurement method is used to avoid errors and potential safety hazards that may occur in the traditional physical contact measurement method.

At the same time, non-contact measurement can also perform automatic monitoring, which improves the efficiency and accuracy of water level monitoring.

Radar Water Level Sensor measures manhole

As a part of the urban drainage system, the water level measurement of the inspection well faces some particularities and the environment is complex. The inspection well is usually located underground and the environment is complex. There are factors such as high humidity and large temperature changes, which will interfere with the water level measurement.

Large range of water level changes: The range of water level changes in inspection wells is usually large. The water level changes greatly from dry wells to full wells. It is necessary for measuring instruments to have a large measurement range and high precision.

Dirt interference: There may be a lot of dirt in the inspection well, such as sediment, garbage, etc. These dirt will interfere with the water level measuring instrument and affect the measurement accuracy and stability.

Radar Water Level Sensor has great advantages in manhole measurement. It can not only work stably in a complex environment, but also provide accurate and reliable water level data. It provides an important basis for inspection well management and maintenance.

Radar Water Level Sensor measures reservoir water level

A reservoir is an artificially constructed water storage facility, and its water level measurement is very important for the management and operation of the reservoir. Radar Water Level Sensor is widely used in the measurement of reservoir water level due to its stable and reliable features.

First of all, the water level of the reservoir changes slowly. Compared with other water bodies, the water level of the reservoir is usually relatively stable. In this way, the Radar Water Level Sensor can accurately measure the water level and give feedback to the management personnel in time. It is convenient for them to manage the reservoir and scheduling.

Second, the water level of the reservoir varies widely. Radar Water Level Sensor can meet this demand. It has a wide measurement range and can adapt to different water level changes.

In addition, the measurement accuracy of the reservoir water level is high. The Radar Water Level Sensor features high precision to accurately measure water levels.

More Radar Water Level Meters

**SIRD-906 Radar Sanitary Level Sensor**

**SIRD-909 Radar Non-Contact Water Level Sensor**

FAQ

A radar water sensor works by emitting radio waves that bounce off the surface of the water. The time it takes for the waves to return is measured, and this information is used to calculate the distance to the water surface, thus determining the water level.

A radar sensor for water level measurement is a device that uses radar technology to measure the level of water in a container, tank, or natural body of water. It sends out radar waves and measures their reflection to accurately determine the water’s height.

The accuracy of a water level sensor depends on the technology used and the conditions under which it’s operated. Generally, modern water level sensors can be quite precise, with accuracies ranging from 0.25% to 1% of the full scale.

Radar type level transmitters are known for their high accuracy, often within 1 mm or even better. Their performance can be affected by factors like the material of the container, the type and angle of the radar waves, and environmental conditions, but in general, they are considered highly precise for level measurement.

Digital Density Meter

Posted on August 5, 2023 by KimGuo11

drurylandetheatre.com

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1. Tuning fork density meter