Monthly Archives: August 2023

Coriolis Density Meter-Concentration Meter

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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
coriolis density meter

Features of Coriolis Density Meter

  1. 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;
  2. Real-time display of five-digit density value, four-digit decimal (one digit for concentration), real-time indication of current and temperature;
  3. You can directly enter the instrument menu to set parameters;
  4. It is easy to install and use, and the reading can be displayed when the flange surface touches the liquid;
  5. It is used for fluid or static liquid, suitable for pipeline installation or installation on container wall, etc.;
  6. Density and concentration have the functions of pure water calibration, fine-tuning of measured value and temperature compensation;
  7. Continuous online measurement without process interruption, can be directly used for production process control;
  8. All parts in contact with liquid are made of 316 stainless steel or polytetrafluoroethylene, which is safe, hygienic and has good corrosion resistance;
  9. 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 work0～3g/cc0～3000kg/m30～187.4 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 CoefficientO.1kg/m3/℃ (after correction)
Built-in temperature sensorPT100
Wetted partsStainless steel 316L, titanium, etc. can be customized
ShellIP65, aluminum alloy
Tine polishingStandard, PFA coated or electropolished
Working pressure3000psi (207bar)
1450psi (100bar)
Test pressureTested at 1.5 times the maximum working pressure
Actual maximum working pressure is limited by process connection rating
Process connection typeflange
Clamp
thread
Explosion-proof certificationEx d Ⅱ B T6 Gb
Power requirements24VDC,50mA
OutputFour-wire system, 4-20mA transmission 4-20mA, optional RS485-Modbus RTU communication
Viscosity range0-20000CP

Fluid and Material Compatibility

TypeNameMolecular formulaConcentration (%)316LHastelloyTitanium alloyzirconiumPTFE
AcidHydrochloric acid (without hydrofluoric acid)HCI0-40×○×☆☆
sulfuric acidH2SO40-50○☆○☆☆
H2SO450-75×○×○☆
H2SO475-98○☆○○☆
nitric acidHNO30-100○○○○☆
phosphoric acidH3PO40-98××××☆
Alkalisodium hydroxideNaOH0-50☆☆☆○☆
Potassium hydroxideKOH0-50☆☆☆○☆
Calcium hydroxideCa（OH）20-50☆☆☆○☆
SaltSodium chlorideNaCI0-50×☆☆☆☆
ammonium chlorideNH4CI0-50×☆☆☆☆
ammonium sulfate(NH4)2SO40-50×☆☆☆☆
Otherscarbamide(NH2)2CO0-100☆☆○☆☆
sodium hypochloriteNaOCI0-16×○×☆☆
hydrogen peroxideH2O20-90☆☆○☆☆
☆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 limitationContain gasMaximum Liquid Viscosity
Regular liquidAcid and alkali solution
316LTitaniumContain 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

More Density meter and measurement analysis solution

Tuning Fork Density Meter
Online Density Meter – Differential Pressure Type
Integrated Zirconia Oxygen Analyzer
Dew Point Transmitter 608 Series
Portable Density Meter-Portable Tuning Fork Density Meter
Handheld Density Meter- Digital Density Meter for Petroleum Products
Optical Density Meter-Liquid Densitometer
Online Alcohol Density Meter-Alcohol Concentration Meter
Split Type Density Meter for Liquids

Coriolis mass flowmeter is a kind of instrument that is commonly used at present and has relatively high stability and reliability of measurement accuracy. Coriolis mass flow meters are not only capable of measuring mass flow meters from Micro Motion, but also of media density.

When the Coriolis Density Meter measures density, its measuring tube vibrates continuously at a certain resonant frequency. Because the resonance frequency is a function of the fluid density. When fluids of different densities fill the vibrating tube, its vibration frequency will also change. Therefore, measuring the frequency change of the vibrating tube completes the density measurement. The linear relationship between the density and the vibration frequency of the vibrating tube.

This method is accurate and reliable in measurement, and is suitable for a wide measurement range of various fluid densities. The pressure loss of Coriolis Density Meter is very small, and it has inherent advantages in measuring the density of viscous fluids such as mud.

There are more and more requirements for density measurement in the current production process, and the accuracy of density measurement directly affects the quality of production process.

We Sino-Inst manufacture and supply many kinds of Coriolis Density Meters-Concentration Meters. Our Coriolis Density Meters are exported to various countries like USA, UK, Germany, Nigeria, Saudi Arabia, Singapore, etc. If you need to measure density, please feel free to contact our sales engineers.

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Optical Density Meter-Liquid Densitometer

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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 work0~100% (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 CoefficientO.1%/m3/℃ (after correction)
Built-in temperature sensortemperature chip
Wetted parts316L, polytetrafluoroethylene
GlassAcid and alkali resistance
ShellIP65, aluminum alloy
Working pressure0.8MPa
Test pressureTested at 1.5 times the maximum working pressure
Actual maximum working pressure is limited by process connection rating
Process connection typeflange
Clamp
Explosion-proof certificationEx d ⅡC T6 Gb
Power requirements24VDC,50mA
OutputFour-wire system, 4-20mA
Viscosity range＜5000MPa.s

Fluid and Material Compatibility

TypeNameMolecular formulaConcentration (%)316LHastelloyTitanium alloyzirconiumPTFE
AcidHydrochloric acid (without hydrofluoric acid)HCI0-40×○×☆☆
sulfuric acidH2SO40-50○☆○☆☆
H2SO450-75×○×○☆
H2SO475-98○☆○○☆
nitric acidHNO30-100○○○○☆
phosphoric acidH3PO40-98××××☆
Alkalisodium hydroxideNaOH0-50☆☆☆○☆
Potassium hydroxideKOH0-50☆☆☆○☆
Calcium hydroxideCa（OH）20-50☆☆☆○☆
SaltSodium chlorideNaCl0-50×☆☆☆☆
ammonium chlorideNH4Cl0-50×☆☆☆☆
ammonium sulfate(NH4)2SO40-50×☆☆☆☆
Otherscarbamide(NH2)2CO0-100☆☆○☆☆
sodium hypochloriteNaOCI0-16×○×☆☆
hydrogen peroxideH2O20-90☆☆○☆☆
☆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 limitbubbles, flow rateMaximum Liquid Viscosity
Particlestransparent
Trace particlesclear, pure liquida small amount of bubbles5000MPa.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 processingClay, 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.

More Density meter and measurement analysis solution

Tuning Fork Density Meter
Online Density Meter – Differential Pressure Type

Integrated Zirconia Oxygen Analyzer
Dew Point Transmitter 608 Series
Portable Density Meter-Portable Tuning Fork Density Meter
Handheld Density Meter- Digital Density Meter for Petroleum Products
Coriolis Density Meter-Concentration Meter
Online Alcohol Density Meter-Alcohol Concentration Meter
Split Type Density Meter for Liquids

When it comes to measuring the “thickness” or “Density” of liquids, the Optical Density Meter-Liquid Densitometer is a top choice.

Optical Density Meter-Liquid Densitometer uses the law of spectrum propagation in liquid to measure the density of transparent liquid. The liquid must have a certain degree of transparency, which is suitable for pipeline installation or installation on the wall of the container.

Our Sino-Inst Optical Density Meter is widely applicable to the concentration of various liquids or liquid mixtures.

At Sino-Inst, we aren’t just Optical Density Meter supplier – we’re experienced manufacturer. We understand the ins and outs of Optical Density Meter because we’ve crafted it with care. Need something special? We support customizations to meet your specific needs. Trust in our experience and expertise. Ready to elevate your measurements? Choose Sino-Inst today!

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

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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.

  1. Handheld density meter with digital LCD screen and various display contents.
  2. Wide measurement range, simple operation, high measurement accuracy and fast test speed.
  3. The pure water density meter is easy to calibrate, and standard substance calibration can be performed.
  4. 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

Tuning Fork Density Meter
Online Density Meter – Differential Pressure Type
Integrated Zirconia Oxygen Analyzer
Dew Point Meter 602 Series
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.

What Is Zirconia Oxygen Sensor?

Welcome to the world of Zirconia Oxygen Sensors, a cornerstone of precision in process control and industrial efficiency. Oxygen plays…

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!

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Case: High Temperature Radar Level Transmitter for Melted Salt-Solar Photovoltaic Power Station

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Melted salt tanks, also known as molten salt troughs, serve the primary purpose of storing high-temperature liquid molten salt. Within these systems, the tanks store heat energy to provide the necessary thermal energy for reactors or heat exchangers or store excess energy. Given the extreme temperature and conditions within these tanks, there’s a need for reliable level measurement technology.

RFQ

Melted salt, reaching temperatures of around 460°C, creates a complex tank environment, especially when mixed with steam. Most level transmitters fail to operate under these harsh conditions.

Challenges of Measuring Melted Salt Levels:

  • High Temperatures: Melted salt can reach up to 460°C, making it hard for standard devices to operate reliably.
  • Steam Interference: The presence of steam in the tank creates a complex environment, which can interfere with measurement signals.
  • Tank Conditions: The frequent temperature fluctuations and regular start-ups can affect the accuracy of level measurements.
  • Material Properties: The molten state of salt presents a challenge, different from measuring solid or regular liquid states.
  • Equipment Durability: Many devices aren’t built to withstand the extreme conditions inside a melted salt tank over extended periods.
  • Accuracy: Precise measurements are crucial, but many transmitters can’t maintain consistent accuracy under these conditions.
  • Safety Concerns: Due to the high temperatures and nature of melted salt, there’s a heightened need for safe measurement methods.
  • External Factors: Outside atmospheric conditions, like pressure and humidity, can also influence measurement reliability.

In such a demanding setting, it’s vital to have equipment specially designed to overcome these challenges, ensuring safe and accurate level measurements.

Sino-Inst’s Solution:

After extensive site inspections and numerous tests, Sino-Inst introduced a customized high-temperature radar level transmitter. This new device can measure liquid levels in temperatures from 300°C to over 1000°C, even in tough environments. It’s a big advancement in level measurement technology.

Working Conditions and Environment:

  • Ambient temperature range: -35℃ to 80℃
  • Relative humidity: ≤95%
  • Atmospheric pressure: 86～108KPa
  • Medium temperature: 400-595℃
  • Medium: Molten Salt

Performance Indicators:

  1. Measurement accuracy within the full range: <±0.1%, display resolution: ±1mm
  2. Protection level of the transmitter: IP67
  3. Response time under 200ms, tracking rapid changes in tank levels.
  4. Resistant to design pressure 1.5 times during a water pressure test.

Considering the environmental and working conditions of the solar molten salt tower-type thermal power molten salt tank, Sino-Inst selected the best products for precise, stable measurements. The 80G high-frequency high-temperature radar level gauge was chosen with specific features:

  • Enhanced with a cooling system and heat dissipator to ensure stable operation.
  • Equipped with a convex lens to prevent adhesion, ensuring measurement accuracy.
  • Radial measures that are narrow, facilitating easy installation and stability.

Key Advantages:

  1. Unaffected by atmospheric precipitation
  2. Measures boiling liquid levels
  3. Installation outside storage tanks
  4. Internal antenna with fluoroplastic lens heating protection
  5. Accurate level measurement not limited by internal temperatures
  6. Evaporation and dust don’t affect measurement
  7. Operates in ambient temperatures from -60°C to 70°C and process temperatures up to 1200°C
  8. Corrosive liquid level measurement without contact, ensuring stable measurements.

Technical Principle:

The radar level transmitter operates on the principle of time travel. It emits high-frequency pulses at the speed of light, which, upon striking the surface of the material, are reflected back and received by an internal receiver. This distance signal is then converted into a level signal.

Radar Level Measurement and guide wave radar level measurement Image source: https://instrumentationtools.com/radar-level-measurement/

Read more about: Radar Level Measurement: Measuring Principle

Applications:

  • Solid measurements including powders, granules, and plastic granules with a low dielectric constant.
  • Liquid measurements, including reactor levels, steam levels, foam product levels, and more.

More Featured Radar Level Meters

64-80GHz FMCW Level Radar

Radar Water Level Sensor 0.05m～35m ~70m~120m
SIRD-901 Radar Corrosive Liquid Chemical Level Sensor

SIRD-903 26 GHz Radar level Sensor -Dust solid level measurement

SIRD-805 Radar Slurry Tank Level Sensor
SIRD-806 Radar High Temperature Level Sensor
SIRD-703 GWR Bulk Solids & Powder Solid Level Sensor
SIRD-704 Coaxial Probe Guided Wave Radar Level Transmitter

More Level Measurement Solutions

If the temperature of the medium you happen to measure is relatively high, you cannot find a suitable liquid level gauge. Or you feel that the measurement accuracy of the liquid level gauge you are using is not accurate. Welcome to choose our high temperature radar level meter, you will be satisfied.

We Sino-Inst is the manufacturer of radar level meter. We offer over 30 Radar level transmitters for level measurement. About 50% of these are 80G Radar level meters.

Sino-Inst, with our vast experience as a manufacturer and supplier, is at the forefront of introducing innovative solutions for complex challenges.

For reliable and advanced high-temperature radar level transmitter solutions, choose Sino-Inst – Your trusted partner in precision and innovation. Contact us now for customized solutions!

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Portable Density Meter-Portable Tuning Fork Density Meter

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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

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

Physical Iindicators

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

Product Performance

The accuracy±0.003g/cm3±3.0kg/m3
Working scope0至3g/cc0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 Coefficient0.1kg/m3/°C (after calibration)
Built-in temperature sensorPT100

Structural Materials

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

Liquid Viscosity Range

  • Viscosity requirement: < 1000MPa

Liquid and Material Compatibility

TypeNamemolecular formulaConcentration (%)316LHastelloyZirconium
AcidHydrochloric acid (without hydrofluoric acid)HCI0-40×○☆
sulfuric acidH2SO40-50○○☆
H2SO450-75×○○
H2SO475-98○○○
nitric acidNHO30-100○○☆
phosphoric acidH3PO40-98○☆×
Alkalisodium hydroxideNaOH0-100○☆×
Potassium hydroxideKOH0-50○☆☆
Calcium hydroxideCa（OH）20-50○☆○
Otherscarbamide(NH2)2CO0-100☆☆☆
sodium hypochloriteNaOCI0-16○○×
hydrogen peroxideH2O20-90☆☆×
☆ 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 limitGasMaximum Liquid Viscosity
Particle diameterSuspended 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

Tuning Fork Density Meter
Online Density Meter – Differential Pressure Type
Online Alcohol Density Meter-Alcohol Concentration Meter
Handheld Density Meter- Digital Density Meter for Petroleum Products
Optical Density Meter-Liquid Densitometer
Coriolis Density Meter-Concentration Meter
Split Type Density Meter for Liquids

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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.

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What Is Density Meter? and Types

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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

Tuning Fork Density Meter

Online Density Meter – Differential Pressure Type
Portable Density Meter-Portable Tuning Fork Density Meter

Handheld Density Meter- Digital Density Meter for Petroleum Products
Optical Density Meter-Liquid Densitometer
Coriolis Density Meter-Concentration Meter
Online Alcohol Density Meter-Alcohol Concentration Meter
Split Type Density Meter for Liquids

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).

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Understanding density is key for many industries, from food and medicine to fuel. A good density meter, or density meter, helps ensure products are safe and high-quality.

Picking the right one might seem tricky, but with a bit of knowledge, it becomes easier. Remember, every tool has a purpose, and it’s about finding the best fit for your needs.

We, Sino-Inst is a professional density meter supplier. We produce and supply more than 10 kinds of density meters such as tuning fork density meters, differential pressure density meters, and hand-held density meters. Our density meters are exported to various countries, USA, UK, Spain, Ukraine, Nigeria, etc.

If you’re looking for expert guidance or a customized solution, remember we at Sino-Inst are seasoned manufacturers and suppliers here to help. Reach out to us and let’s make sure you get the perfect tool for your tasks!

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

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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:

  1. USB to RS485 serial cable (four-wire system);
  2. USB to TTL serial cable (two-wire system);
  3. USB to Hart-modem (two-wire system) for communication.
  4. Debugging via mobile phone Bluetooth makes on-site debugging safer and more convenient.
  5. 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
SIRD-908 Radar Water Level Sensor
64-80GHz FMCW Level Radar

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.

More Level Measurement Solutions

Radar Liquid Level Sensors

Radar liquid level sensors are special tools that use radio waves to measure how much liquid is in a tank…

As a commonly used water level measuring instrument, Radar Water Level Sensor has important application value in various water level measurements. The application of Radar Water Level Sensor has played a positive role in the operation of water supply sources and hydropower stations. Improved efficiency of water level management.

Sino-Inst is a professional radar level meter supplier. Our Radar Water Level Sensor is a 76-81GHz frequency modulated continuous wave (FMCW) radar product that supports four-wire and two-wire applications. Support customized range 0.05m~35m~70m~120m. If you need to measure water level, you can contact our sales engineers!

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Digital Density Meter

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Tuning Fork Density Meter
Online Density Meter – Differential Pressure Type
Portable Density Meter-Portable Tuning Fork Density Meter
Handheld Density Meter- Digital Density Meter for Petroleum Products
Optical Density Meter-Liquid Densitometer
Coriolis Density Meter-Concentration Meter
Online Alcohol Density Meter-Alcohol Concentration Meter
Split Type Density Meter for Liquids

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Liquid Level Sensor Probes Types and How to Select

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Liquid Level Sensor Probes are an essential part of liquid level transmitters. When purchasing a liquid level meter, we must consider the type of Liquid Level Sensor Probes, such as contact or non-contact. Such as the length of the probe, capacitive probe, float probe rod, etc. Or the working principle of Liquid Level Sensor Probes, such as ultrasonic, radar, hydrostatic pressure, etc. Selecting the right type is crucial, as it ensures accuracy, efficiency, and the reliability of the measurement. Whether in industries like food processing, oil and gas, or water treatment, the right sensor can optimize operations and minimize risks.

RFQ

What is Liquid Level Sensor Probe?

We can understand that a level meter is composed of a probe and a transmitter. Liquid Level Sensor Probes detect the amount of liquid in a specific space, like a tank or a bottle. They’re vital because they help monitor and control the amount of liquid, making sure there’s not too much or too little. This control keeps systems running smoothly and safely, saving both time and money.

For example, Capacitance sensing probe devices for measuring liquid level and converting it to an electrical signal to send to other instrumentation.

You may also have seen straight rod probes, cable probes, and coaxial probes. Or PTFE non-contact probe. Then, according to our many years of experience, Liquid Level Sensor Probes can be classified from several aspects. That is: working principle and material.

From the material point of view, it is easy to understand. It only needs to be compatible with the measured liquid. For example, to measure sulfuric acid, the probe is generally made of anti-corrosion material, such as PTFE. Therefore, when we select enough level meters, we only need to inform the manufacturer of the compatible materials of the measured medium.

Next, let’s look at different types of Liquid Level Sensor Probes from the working principle.

Types of Liquid Level Sensor Probes

Float Level Sensor Probes

Float Level Sensors are widely used in applications where accurate liquid level measurements are needed. Common scenarios include water tanks, where they help in maintaining the desired water level; fuel systems, to monitor fuel storage; sump pumps, to prevent flooding.

Their simplicity and reliability make them suitable for many liquid monitoring tasks.

Advantages:

  • Simple Design: Easy to install and use.
  • Cost-Effective: Suitable for budget-conscious applications.
  • Reliable: Performs well in various standard applications.
  • It can be made into a multi-float form. For multi-level control.

Disadvantages:

  • Limited Use: Not suitable for turbulent or dirty liquids.
  • Wear and Tear: Moving parts may require regular maintenance.

Capacitive Liquid Level Sensor Probes

Capacitive Liquid Level Sensor Probes work on the principle of detecting changes in electrical capacitance caused by the presence of a liquid. The sensor probe forms one plate of a capacitor, and the liquid acts as a dielectric material. Changes in the level of the liquid alter the capacitance, providing a measure of the liquid’s level.

Typical applications include the food and beverage industry, pharmaceuticals, and chemical processing, where non-contact, versatile liquid level sensing is needed, particularly with non-conductive or high-temperature fluids.

Advantages:

  • Works Well on Dielectric Fluids.
  • Simple Mechanical Construction: Easy to manufacture and install.
  • No Moving Parts: This reduces the need for regular inspection and maintenance, and minimizes wear and tear.
  • High-Temperature Fluid Compatibility: Since no sensitive components make contact with the fluid, it can handle high temperatures.
  • Performance Unaffected in Sealed or Pressurized Vessels: The design ensures stable functioning in different container types.

Disadvantages:

  • Incompatibility with Conductive Fluids: Requires an insulated outer tube for working with conductive liquids.
  • Issues with Thick or Sticky Media: Such substances can coat the probe, creating an insulation layer that causes malfunction or affects performance.
  • Requires Calibration: Proper setup is needed to distinguish between liquid and air.
  • Sensitive to Changes in Media: Changes in the dielectric constant of the fluid can affect readings.
  • Potential Obstruction and Cleanliness Issues: Probe protruding into the liquid might cause blockage, attract fouling, and create hygiene concerns.
SI-U01 Float Level Sensor

LT series Digital Display Magnetostrictive liquid level sensor

ULT-100 Explosion-proof Ultrasonic Level Indicator
HS-2000 Ultrasonic Tank Level Sensor-External Mounted

Ultrasonic Level Sensor Probes

Ultrasonic Level Sensor Probes function by emitting sound waves at ultrasonic frequencies. These waves bounce off the surface of the liquid and are detected by the sensor. By calculating the time taken for the sound waves to return, the distance to the liquid surface, and hence the level, is determined.

Ultrasonic sensors are commonly used in wastewater treatment, oil and gas industries, and irrigation systems, where non-contact measurement is preferred. Their capability to work with dirty or corrosive liquids makes them valuable in such applications.

Advantages:

  • Non-Contact Measurement: Suitable for corrosive or dirty liquids.
  • High Accuracy: Provides precise readings.
  • Versatile: Works well in various conditions. Such as explosion-proof.

Disadvantages:

  • Sensitive to Foam or Vapor: These factors may affect performance.
  • Measuring distance is limited. Ultrasonic is not suitable for larger measuring ranges.

Radar Level Sensor Probes

Radar Level Sensor Probes operate using radio waves. A radar pulse is transmitted, which reflects off the surface of the liquid and returns to the sensor. By measuring the time it takes for the pulse to travel to the liquid and back, the distance, and therefore the level, is calculated.

Radar sensors are highly accurate and can work in extreme conditions, making them suitable for the chemical industry, large industrial tanks, and marine applications. Their adaptability allows for usage with various liquids, even in challenging environments.

Advantages:

  • Highly Accurate: Offers very precise readings.
  • Extreme Conditions: Functions well in tough environments.
  • Versatile: Suitable for various liquids.

Disadvantages:

  • Complex Setup: May require professional installation.
  • More Expensive: Higher upfront cost.
  • Alignment Needed: Proper positioning is crucial.
SI-PCM260 Deep Well Water Level Sensor

Capacitance Level Transmitter
64-80GHz FMCW Level Radar

SIRD-901 Radar Corrosive Liquid Chemical Level Sensor

Magnetostrictive Level Sensor Probes

Magnetostrictive Level Sensor Probes operate by detecting changes in the magnetic alignment within a sensing element. A current pulse generates a magnetic field, interacting with a magnetic float, causing a torsional strain wave. The time taken for this wave to travel is measured, determining the liquid level.

Known for high precision and robust design, these sensors are typically used in petrochemical industries, pharmaceutical manufacturing, and cryogenic applications. Their ability to function in hazardous environments adds to their appeal in these specialized areas.

Advantages:

  • High Precision: Extremely accurate readings.
  • Robust Design: Suitable for hazardous environments.
  • Reliable: Functions well in various industrial settings.
  • Large range cable probes can be customized.

Disadvantages:

  • More Expensive: Higher cost may limit applications.
  • Magnetic Interference: Susceptible to external magnetic fields.

Hydrostatic Level Sensor Probes

Hydrostatic Level Sensor Probes work by measuring the pressure exerted by the liquid at a specific depth, which corresponds to the liquid’s level. The weight of the liquid creates pressure, which the sensor translates into a level reading.

These probes are often utilized in water treatment facilities, sewage systems, deep wells, and fuel tanks.

Their straightforward principle and reliability make them suitable for environments where liquid density is consistent, and there might be slurry or muddy substances, as they can handle such conditions effectively.

Advantages:

  • Simple and Reliable: Easy to use and offers dependable readings.
  • Works with Muddy Liquids: Suitable for slurry or muddy substances.
  • Low Maintenance: Requires minimal upkeep.

Disadvantages:

  • Pressure-Sensitive: Changes in pressure may affect performance.
  • Regular Cleaning Needed: Thick media may require consistent cleaning.
SIRD-702 GWR Corrosive Liquid Chemical Level Sensor
SIRD-703 GWR Bulk Solids & Powder Solid Level Sensor
SIRD-704 Coaxial Probe Guided Wave Radar Level Transmitter
SIRD-705 GWR Level Sensor for High Temperature & High Pressure

How to Select the Right Liquid Level Sensor Probe

Selecting the right Liquid Level Sensor Probe is essential for accurate and reliable measurements. Here’s a simple guide to help you choose the best option for your needs:

Understanding Your Needs:

  • Liquid Type: Identify if the liquid is conductive, non-conductive, sticky, or corrosive.
  • Measuring Range: Determine the maximum and minimum levels that need to be monitored.
  • Environmental Conditions: Consider factors like temperature, pressure, humidity, etc., that may affect the sensor.

Evaluating Different Types:

  • Material Requirements: Choose materials that are compatible with the liquid being measured, considering factors like corrosion resistance.
  • Installation Size: Check the dimensions of the sensor to make sure it fits within the available space.
  • Installation Space: Consider the physical layout of the area where the sensor will be installed.
  • Signal Output and Signal Control: Determine the type of output needed (analog, digital) and if any specific control features are required, like alarms.

Consideration for Installation and Maintenance:

  • Ease of Installation: Look for sensors that can be installed without specialized tools or expertise.
  • Maintenance Needs: Understand the cleaning and servicing needs, as some sensors might require more regular maintenance.

By taking these factors into consideration, you can find a Liquid Level Sensor Probe that meets your specific requirements and provides consistent, accurate performance. Remember to consult with experts or refer to detailed product specifications for the best results.

Client Case: Measuring Sulfuric Acid Tanks

We were approached by a customer looking to measure the liquid level in open concrete tanks containing bath acid sulfuric acid. The specific parameters provided were:

  • Measured Medium: Bath acid sulfuric acid
  • Tank Measurement Range: 2 meters
  • Temperature and Pressure: Ambient; maximum atmospheric temperature 30°C
  • Mounting Dimensions: 1 1/2″ NPT

After understanding the requirements, we configured the following solution for accurate and reliable measurements:

Radar Level Meters – 80G:

  • Application: Measuring the liquid level in sulfuric acid tanks
  • Antenna Material: PTFE, for excellent resistance to acid
  • Temperature Resistance: -40 to 80℃, suitable for ambient conditions
  • Pressure: -0.1 to 0.3MPa, aligning with atmospheric pressure
  • Mounting Dimensions: 1 1/2″ NPT PTFE Coated, matching customer’s specifications
  • Display: Digital, with measurement and programming capabilities
  • Power Supply: 24VDC
  • Output: 4-20mA (two wires) + HART
  • Electrical Connection: 1/2″ NPT head

This configuration met the customer’s specific needs for measuring sulfuric acid, providing a solution that is both reliable and tailored to their application. The client was satisfied with the performance, praising the gauge’s accuracy and ease of use.

FAQ

Make sure you have the answes to the following key questions before selecting a level meter, controller on any other level measurement instrument:

  1. Are you measuring a liquid or solid?
  2. What are the application’s temperature and pressure ranges?
  3. Is point level or continuous measurement required?
  4. What level measurement range do you need?
  5. Is the measured material electrically conductive?
  6. Will the material coat or build up on surfaces?
  7. Does turbulence, foam, or vapor occur at the surface of the liquid?
  8. Will you need contact or non-contact level measurement?
  9. What kind of output do you need–analog, relay, digital display, etc

Two common electronic probes used to measure liquid levels are capacitive and ultrasonic sensors. Capacitive sensors detect changes in electrical capacity caused by the liquid, while ultrasonic sensors use sound waves to determine the liquid’s surface distance.

A probe sensor for a water level indicator is a specific type of Liquid Level Sensor Probe that’s designed to measure water levels. It can be used in tanks, reservoirs, and other containers to monitor and control water levels, often in water treatment or irrigation systems.

The best sensor for measuring water levels depends on the specific needs and conditions, such as the type of water, temperature, pressure, and desired accuracy. Common choices include float-operated sensors for simplicity and ultrasonic sensors for non-contact measurements. Consulting with a professional or a sensor supplier can help determine the best option for a particular application.

More Liquid level measurement Guides

Selecting the right Liquid Level Sensor Probe is a critical task, and the various types mentioned offer unique advantages and considerations. Understanding your specific needs and working with an experienced manufacturer can ensure the best solution for your application.

At Sino-Inst, we pride ourselves on being not only an experienced manufacturer but a knowledgeable supplier as well. With years of expertise in the field, we provide tailored solutions to meet your unique needs, even offering customization to align perfectly with your requirements.

If you’re in need of a Liquid Level Sensor Probe, don’t hesitate to reach out to us. Our team is here to assist you in selecting the right product, ensuring efficiency, reliability, and satisfaction. Contact us today and let us be your trusted partner in your liquid level measurement needs.

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