Battery Operated Flow Meter is mainly suitable for occasions where there is no external power supply, but self-powered.

Features of Magnetic Battery Operated Flow Meter

1. Large-screen clear LCD display: clear and fast data display, ensuring fast reading of data
2. Full digital signal processing, stable work, high measurement accuracy, strong anti-interference ability
3. Three-electrode measurement, more accurate than general two-electrode measurement
4. The service life is up to 3-5 years
5. Automatic two-way flow measurement, on-site instantaneous flow, forward and reverse cumulative total, pressure (special customization) display
6. Self-diagnosis fault alarm and GSM/GPRS data wireless remote transmission function
7. Through the GSM/GPRS remote management software system, functions such as wireless remote transmission, storage and data analysis of flow data can be realized.
8. The meter adopts piecewise linear correction, so that it can ensure the accuracy requirements in the large, medium and small flow measurement.

Specifications of Magnetic Battery Operated Flow Meter

Nominal diameter:	DN6mm—DN3000mm (DN32mm～DN2000mm can also choose plug-in battery-powered electromagnetic flowmeter)
Nominal pressure:	0.6—4.0Mpa (special pressure can be customized)
Accuracy:	±0.5%
Measuring range:	0-15m/s
Measuring medium (conductivity):	>20µs/cm
Medium temperature:	-10℃—+160℃
Ambient temperature:	-10℃—+60℃
Power supply mode:	3.6V/DC built-in lithium battery power supply. Continuous working time 3-5 years
Connection mode:	flange type, plug-in type, clamping type (optional)
Structure:	integrated type, split type (optional)
Protection level:	integrated type IP68, split type sensor IP68, converter IP65
Display mode:	LCD large screen backlit liquid crystal display. Automatic two-way measurement. Simultaneously display instantaneous flow, flow rate, pressure, total forward and reverse cumulative total, battery power, clock and alarm prompts, etc.
Output signal:	pulse output 0.00001～1/p. Frequency output 1～1000Hz arbitrary setting (passive optocoupler output)
Communication method:	GSM (SMS data packet)/GPRS wireless data remote transmission/RS485

Guess you like: Magnetic flow meter working principle

Magnetic flow meters for wastewater

According to the situation of the wastewater treatment site, there are two general wastewater discharge methods. One is to discharge through pipes, and the other is to discharge through ditches. The two types of flow meters selected are therefore different.

1.Waste water is used for pipeline discharge, and most of them choose electromagnetic flowmeter to measure. Because there are no obstructions in the sensor, there is no fear of debris in the medium.

But need to pay attention to the medium must be full. If the pipe is not full, a pipe must be used to lead a section of the sinking pipe to ensure that the flowmeter is in a full pipe.

Note that the electromagnetic flowmeter cannot be installed at the drain of the pipeline, and the length of the straight pipe must meet the requirements of the flowmeter.

2.Wastewater is used for ditch discharge, mostly using ultrasonic open channel flow meters.

A measuring groove is installed at the discharge port, and an ultrasonic probe is installed directly above the groove. In this way, the flow of wastewater flowing through can be measured. This instrument generally uses 24V power supply, output: 4-20MA.

When selecting the electromagnetic flowmeter for waste water, it is necessary to know the temperature of the medium, the pressure of the medium, the flow range of the medium, the composition of the medium, the power supply requirements, and the on-site installation requirements. The key point of the selection is to choose which product to measure well. The second is to consider the convenience of installation, operation and maintenance. Finally, the product price can be considered.

More about : Sewage Flow Meter Selection

Electromagnetic Flow Meter Price List

Why is the price of some lithium battery electromagnetic flowmeters at USD 0. Some prices are higher.

Some manufacturers quote real prices, and some quote false prices.
So many people will ask how much is a lithium battery electromagnetic flowmeter?

Electromagnetic flowmeters have different prices due to different diameters, different materials, different media, different linings, different meter heads, and different functions. The final quotation is based on the parameters.

Remarks:
Because the lithium battery electromagnetic flowmeter is battery-powered, the price is different than other ordinary electromagnetic flowmeters. The final price should be based on the parameters.

More Battery Operated Flow Meters

Sino-Inst offer over 20 Magnetic Battery Operated Flow Meter, with Best Price.
A wide variety of Magnetic Battery Operated Flow Meters options are available to you, such as free samples, paid samples.

Sino-Inst can customize the nominal diameter of DN3-DN3000.
And Sino-Inst can be customized: waterproof electromagnetic flowmeter, battery-powered electromagnetic flowmeter, solar-powered electromagnetic flowmeter, thermal electromagnetic flowmeter, integrated split electromagnetic conversion, etc.

Stainless steel flow meter with stainless steel housing and stainless steel flange connection. Stainless steel flow meter can be used in harsh environment for corrosive fluids flow measurement.

Features of Magnetic Stainless Steel Flow Meter

1. Flow measurement is not affected by changes in flow density, viscosity, temperature, pressure and conductivity. The sensor induced voltage signal has a linear relationship with the average flow rate. Therefore, the measurement accuracy is high
2. There is no obstruction in the measuring pipe, so there is no additional pressure loss. There are no movable parts in the measuring pipeline. So the sensor has a long life
3. The straight pipe section required by the sensor is short, which is convenient for installation
4. Only the inner lining and electrode of the sensor are in contact with the liquid to be measured. As long as the electrode and lining material are selected reasonably. Resistant to corrosion and wear
5. Two-way measurement system. The forward and reverse flow can be measured.
6. Applicable medium: any conductive liquid.

Specifications of Magnetic Stainless Steel Flow Meter

Converter form	Compact type	Split type
Executive standard	JB/T9248-1999	JB/T9248-1999
Accuracy class	Level 1 or 0.5	Level 1 or 0.5
Dielectric conductivity	＞5μs/cm	＞5μs/cm
Can measure the lowest flow rate	0.1 m/s	0.1 m/s
Can measure the highest flow rate	15m/s	15m/s
Turndown ratio	1:20, can be customized	1:20, can be customized
monitor	Standard	Standard
Signal output	Pulse or 4-20mA	Pulse or 4-20mA
Lining material	Rubber, PTFE	Rubber, PTFE
Electrode material lining	316 stainless steel, tantalum, titanium	316 stainless steel, tantalum, titanium
Power supply	220VAC or +24VDC	220VAC or +24VDC
Communication Interface	RS232, RS485	RS232, RS485
Protocol	MODBUS, HART, Profibus, etc.	MODBUS, HART, Profibus, etc.
Explosion-proof grade	Exd[ia]qIICT5	Exd[ia]qIICT5
Protection level	IP65, optional IP68	IP65, optional IP68
Instrument pass	DN6~DN2000	DN6~DN2000
Installation method	Flange installation, optional flange clamping	Flange installation, optional flange clamping
Nominal pressure	1.6MPa or customized	1.6MPa or customized
Medium temperature	＜180℃	＜180℃
Ambient temperature	-30℃-60℃	-30℃-60℃

Flow Meter for Measuring Corrosive Liquids

Stainless Steel Flow Meter is a kind of electromagnetic flow meter. It can be used to measure the flow of strong corrosive liquids such as acid, alkali and salt solution.

In the process of industrial consumption, many media are slightly or extremely corrosive. However, due to consumer demand, we also need to measure these media.

How to choose a suitable flow meter? How to choose a flow meter for measuring corrosive media?

1.Corrosion

Corrosion is a phenomenon in which metals are destroyed due to chemical effects in their environment. All metals and alloys can be corrosion resistant in certain specific environments.

But in other environments it is very sensitive to corrosion. Generally speaking, there are no industrial metal materials that are resistant to corrosion in all environments.

Corrosion can be divided into uniform corrosion (uniform corrosion) or general corrosion (general corrosion) and partial corrosion (localized corrosion).

The corrosion rate of general corrosion can be expressed in units such as mm/a. Usually, the data whose corrosion rate is below 0.1mm/a is converted to corrosion-resistant data. The corrosion rate is one order of magnitude larger than this, that is, the corrosion rate is 1mm/a.

Information about common equipment can sometimes be determined as applicable. Regarding the measuring element of the flow meter, it is not allowed. Based on the corrosion rate, the service life of the metal can be predicted.

Extended reading: Corrosive Liquid Chemical Level Sensor in Chemical Processing

2.Damage to the flowmeter caused by corrosive media

The corrosiveness of the medium is a serious threat to the flowmeter. Only certain types of flow meters such as clamp-on ultrasonic flow meters are less affected by corrosion.

a. Corrosive media will corrode the parts that are in direct contact with the flowmeter. Make it damaged and lose its function. For example, corrosion damage to the diaphragm of the differential pressure transmitter, and complete failure due to leakage of silicone oil. The electrode is corroded, causing the medium to be out of the world, causing the excitation coil to burn out.

b. The parts of the flowmeter are corroded by corrosive media for a long time and the geometric dimensions are changed. Cause the accuracy of the instrument to decrease. For example, after the rotor in the rotameter is corroded by the fluid, the outer dimension is reduced.

As a result, the flow indication is low. Another example is that the vortex generator in the vortex flowmeter is corroded by the fluid and the width is reduced. The appearance of the front flow surface becomes rough, causing changes in the flow coefficient.

There are also clamp-on ultrasonic flowmeters that are less affected by corrosive media. It is also often caused by the corrosion of he metal pipe by the medium. It weakens the transmitting and receiving signals, and loses flexibility in severe cases.

c. Shorten the life of the instrument. For example, the conical tube and other parts in the metal tube float flowmeter. After several years, the welds were worn out.

d. Leakage of corrosive media. If it is not discovered and disposed of in time, it will easily lead to safety and personal accidents.

According to long-term inspection, electromagnetic flowmeter and ultrasonic flowmeter are selected for common corrosive liquid measurement. If it is corrosive gas, you can choose acid-resistant stainless steel vortex flowmeter or other gas flowmeter.

The electromagnetic flowmeter for measuring liquid media can measure various corrosive media containing tiny particles. Of course, the premise is that the measured medium is conductive. It is only necessary to use different lining materials and electrode materials according to the corrosiveness of the medium to deal with the corrosion problem of the medium belt.

Ultrasound is even simpler. If you choose a clamp-on ultrasonic flowmeter, you don’t have to think about the corrosiveness of the medium at all. It’s just not as high as an electromagnetic flowmeter in measurement accuracy.

More Featured Stainless Steel Flow Meters

3.Measures for fluid corrosion in flow measurement

(1) Change the instrument regularly

Corrosive media can corrode metals in various conditions. Some corrosion rate is very fast, that is, full corrosion. Some corrosion is subtle, very slow, that is, partial corrosion. When making instrument selection, it should be analyzed in detail according to the detailed situation. Then make a decision.

For example, compressed air and water are generally considered to be non-corrosive, but they are not. Because the concentration of nitrogen and oxygen compounds in the atmosphere in urban areas is generally higher. When it is absorbed by the condensate in the compressed air. The condensate is acidic. Thereby it has slight corrosion to carbon steel materials.

This situation is more serious in plant areas such as sulfuric acid plants, nitric acid plants, and chlor-alkali plants. Of course, in addition to dilute nitric acid, sulfuric acid and hydrochloric acid may be contained in the compressed air at this time. The water situation is similar. Especially river water. Because it contains a variety of ions, it also corrodes carbon steel. Instruments used under this condition will show signs of corrosion after several years.

For example, it was found that the surface of the carbon steel ring chamber in contact with the fluid in the flow throttling installation was corroded. Become bumpy. In severe cases, the geometric size and appearance will change greatly. The inner walls of the front and rear straight pipe sections also become uneven. This situation does not meet the requirements of the verification procedures. It is difficult to guarantee the accuracy of the original instrument.

At this time, a problem arises. Is it possible to design and select the annular chamber and the front and rear straight pipe sections in the throttling installation to be changed to stainless steel?

Of course, if it is changed to stainless steel. The corrosion problem of the annular chamber and straight pipe section will certainly be solved, but at the same time the investment has increased. And the increase in investment is related to the pipe diameter. If the nominal diameter is larger. The increase in technology capital is not a small number.

Therefore, the decision-making should be based on the measurement accuracy request of the detailed measurement point, the severity level of corrosion, the life expectancy, and the budget acceptance ability. Weigh the pros and cons, and control responsively.

If the measurement accuracy is not high. Such as for process monitoring and control. Slightly corroded, carbon steel materials can also be used for many years. After the change to stainless steel, the investment increased more. Then, it’s better to wait for the ring chamber to be corroded and unable to continue to be used. Then update the entire or damaged part of the throttling installation.

(2) Avoid the heavy

Avoiding the heavy and the light is based on a deep understanding of the process flow and the characteristics of the relevant media. Choose a measurement plan reasonably. It can also achieve the purpose of metering or stopping control of the consumption process. Avoid highly corrosive parts. And choose the less corrosive part. Even change the variety of adjusted parameters.

For example, the flow rate constant value adjustment system can be replaced by liquid level average adjustment or other suitable variable adjustment. So as to avoid the problem of corrosion resistance of flow measuring instruments.

For example, the flow of sewage into sewage treatment plants must be measured. In order to control the total discharge of pollutants. The sewage is generally acidic or alkaline. And correspondingly, an appropriate amount of alkali or acid should be added to neutralize it. Then, consider the corrosion of sewage to the flow meter. Of course, it is better to select the flow detection point after neutralization.

The flow measurement of raw gas also has a similar situation. Raw gas often contains a certain amount of sulfur dioxide. This gas is not very corrosive in boring hours. But after the wild gas is separated from the furnace. With the increase of the transfer interval. The gas temperature gradually decreases. The temperature rises accordingly. And it quickly shows condensate and is highly corrosive. When considering the location of the gas flow measuring instrument device. Of course, it should be selected before the gas presents condensate.

(3) Choose an instrument with corrosion resistance

①The instrument selection of common acid medium.

In the vortex flow sensor and turbine flow sensor, the part in contact with the fluid is acid-resistant steel. Ordinary acidic liquids and gases can be used.
The oval gear flowmeter made of acid-resistant steel can meet the needs of accurate measurement of ordinary acid liquids.

②The instrument selection of conductive liquid.

There are many kinds of lining materials for measuring tube of electromagnetic flowmeter.

Among them, the good corrosion resistance is polytetrafluoroethylene. There are also several kinds of electrode materials, which can meet the needs of most corrosive media.

When selecting electrode materials, the requirements should be met. Don’t be superstitious about precious metals. Because precious metals are not omnipotent.

Other catalysts like platinum electrodes have also attracted people’s attention. In chemical consumption, platinum is a very good catalyst. Certain media react chemically after contact with platinum under certain conditions. Proven hydrogen peroxide. The platinum electrode electromagnetic flowmeter is measuring hydrogen peroxide. Aerosol will be generated on the surface of the electrode. When the flow is zero. The output will also fluctuate.

Select appropriate electrode materials and lining materials to measure the flow of corrosive media. If the fluid temperature is also within the allowable range. That is the ideal choice, its measurement accuracy can reach 0.3~1%R.

Magnetic flowmeter can meet the needs of various measurement ranges. But if the fluid does not conduct electricity, the electromagnetic flowmeter is powerless.

③The instrument selection of non-conductive liquid.

When the clamp-on ultrasonic flowmeter works, the fluid does not directly contact the meter. Therefore, it is suitable for various corrosive fluids.

There are two types of clamp-on ultrasonic flowmeters according to their principles. Jet lag and Doppler.

The time difference method is suitable for clean single-phase fluids. The accuracy is related to pipe diameter and flow rate.
E.g:
a. When pipe diameter>150mm, v>0.3m/s, the uncertainty is ±2%R (it can reach ±1% R after calibration). v ≤0.3m/s, the uncertainty is ±O.Olm/s.
b. When the pipe diameter is ≤150mm, v>0.3m/s, the uncertainty is ±5%. v≤0.3m/s, the uncertainty is ±0.05m/s.

The Doppler flowmeter is suitable for liquids with high solid content or bubbles. The uncertainty can only reach ±1%~±10%. Obviously much lower than the electromagnetic flowmeter. Therefore, use it only when there is no other better method. The price has nothing to do with the pipe diameter. When DN≤200, ultrasonic meters are more expensive than electromagnetic flowmeters. When DN≥250, the ultrasonic flowmeter is cheaper than the electromagnetic flowmeter.

④ Selection of corrosive gas instruments

a. Ultrasonic flow meter.

In recent years, the domestic and foreign natural gas industry has achieved rapid development. This has greatly promoted the development of natural gas metering instruments. Among them, the multi-channel ultrasonic flowmeter specially developed for natural gas measurement is a dazzling pearl. If this technology is transplanted for corrosive gas flow measurement, it should be feasible. Because only the inner wall of the measuring tube needs to be treated for corrosion prevention.

b. Throttle differential pressure flowmeter.

There are no reports of commercial throttling differential pressure flow meters suitable for corrosive media. However, such meters developed by users themselves were reported decades ago.

Sino-Inst offers over 10 Magnetic Stainless Steel Flow Meter for flow measurement. About 50% of these are wastewater flow meters, 40% is the liquid flow sensor. And 20% are Ultrasonic Flow Transmitter and mass flow meter.

A wide variety of Magnetic Stainless Steel Flow Meters options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of flow measurement instrumentation, located in China.

Sanitary Flow Meter adopts stainless steel tri clamp fittings. Used in food, sport drink, liquor and other beverage industries preprocess applications.

Features of Magnetic Sanitary Flow Meter

1. The sensor adopts new sanitary lining material. Prevent the accumulation of measuring medium residues in the measuring tube.
2. The sensor adopts a quick connection scheme. The electromagnetic flowmeter is easy to disassemble, maintain and clean.
3. The converter uses a 16-bit embedded microprocessor for signal processing. It has high integration and fast calculation speed. The calculation accuracy is high. Fully digital signal processing. Strong anti-interference ability. Features such as reliable measurement.
4. The intelligent converter can simultaneously display measurement data such as volume flow percentage, instantaneous flow, and cumulative flow.
5. The flowmeter is a two-way measuring system with three totalizers inside. Forward total, reverse total, and difference total. It can display positive and negative flow.
6. With digital communication signal output such as current, pulse, RS485, RS232, Hart and Modbus.

Specifications of Magnetic Sanitary Flow Meter

Nominal diameter:	DN10～DN100mm;
Nominal pressure:	≤1.6MPa;
Accuracy:	±0.5%; ±0.3%;
Measuring range:	0～10m/s (flow velocity);
Lining material:	PFA;
Electrode material:	316L stainless steel, HB, HC, titanium, tantalum
Shell material:	stainless steel;
Medium temperature:	-10℃～+80℃;
Environment temperature:	-25℃～+60℃;
Connection method:	Clamp type quick connector;
power supply:	220V AC or 24V DC;
Installation:	Integrated-type, split type
Enclosure rating:	Sensor IP65, IP68 optional (IP65: dust-tight, anti-spraying, IP68: dust-tight, long-term work underwater.) Converter IP67 (IP67: dust-tight, short-term immersion)

Magnetic Sanitary Flow Meter Dimension

Application of Hygienic Electromagnetic Flowmeter in Beer Industry

Magnetic Sanitary Flow Meter uses a new sanitary lining material and lining process. Meet the hygiene requirements of the food industry. At the same time, a stainless steel casing and a stainless steel clamp connection are used to facilitate the rapid disassembly and cleaning of the electromagnetic flowmeter.

The electromagnetic flowmeter is not easily contaminated during use. It can be widely used in the production process of mineral water, soy sauce, jam, fruit juice, rice wine, milk, and other foods, as well as in the fields of hygiene and chemical industry. Especially it is most widely used in beer filling.

Magnetic Sanitary Flow Meter is used in the beer filling production line to perform quantitative filling while filling. An electronic valve filling machine equipped with a sanitary electromagnetic induction flowmeter is adopted, which is a dynamic measurement and quantitative form. The electromagnetic flowmeter is used for dynamic measurement of the liquid flowing through the valve.

A Sanitary electromagnetic flowmeter plays an important role in the measurement process of beer brewing. Not only because it has the advantages of low failure rate and high measurement accuracy. Also due to its Faraday electromagnetic induction principle. That is, the conductor will generate induced electromotive force when passing through the magnetic field. The flowing liquid medium represents a moving conductor, and the induced current is proportional to the flow speed. Input the metering amplifier through a pair of electrodes. Through the calculation of the fluid cross-sectional area and flow rate. The flow rate can be accurately obtained, and the quantitative accuracy can reach 1/1000.

Note: The caliber of the selected sanitary electromagnetic flowmeter is not necessarily the same as the pipe diameter, it should be determined by the flow rate. The process industry transports liquids with different viscosities such as water. The pipeline velocity is generally 1.5～3m/s. EMF is used on such pipelines, and the sensor diameter is the same as the pipe diameter.

Read more about Digital Beer Flow Meters for Sale|Brewery-Wine-Craft Beer Brewing Process management system 

Application of Magnetic Sanitary Flow Meter in measuring beverages such as milk and juice

Milk is a liquid food, similar to this, there are juices, beverages, etc. For the measurement of such media, the level of hygienic requirements is of course the first.

In our sales process, we often encounter some telephone consultations Choose the flowmeter in the milk pipeline configuration. The related flowmeter products produced by our company can also meet its measurement requirements.

The following is a corresponding explanation of the selection of measuring instruments for such food liquid media.

Question: Should I choose a sanitary liquid turbine flowmeter or a sanitary electromagnetic flowmeter? Or is there a more advanced, better and more suitable flow meter?

Answer: First of all, milk (liquid) conducts electricity (there are various conductive ions in it). There are many kinds of mineral ions in milk, so both flow meters can be used.

Extended reading: Food grade flow meters for Food & Beverage industry

Read more about Sanitary Flow Meters-316SS,Tri clamp-Pulse- for Brewery

Magnetic Sanitary Flow Meter has a wide range of applications.

Large-caliber instruments are mostly used in water supply and drainage projects.

Small and medium calibers are often used in high-demand or difficult-to-test occasions, such as the cooling water control of the blast furnace tuyere in the iron and steel industry, the measurement of pulp and black liquor in the paper industry, the strong corrosive liquid in the chemical industry, and the ore pulp in the non-ferrous metallurgical industry.

Small calibers and tiny calibers are often used in places with hygiene requirements such as the pharmaceutical industry, food industry, and biochemistry.

Summary:

The flowmeter in the milk pipeline configuration can be selected according to the on-site working conditions and flow range. No flowmeter is the best, only choose the appropriate flowmeter according to the actual situation on the spot. It is handy during use. It is a perfect flow meter.

Extended reading: Stainless steel flow meters|304-316 optional

Sanitary Turbine Flow Meter

Extended reading: Vortex Hygienic Flow Meter

Sino-Inst offers over 10 Sanitary Flow Meters, with the Best Price.

A wide variety of Sanitary Flow Meters options are available to you, such as free samples, paid samples.

About 13% of these are magnetic flow meter, 14% are Insertion Magnetic Flow Meter, 25% are Venturi flow meter, 13% are Handheld ultrasonic flow meter, and others are Liquid Turbine Flow Meters.

Sino-Inst is Sanitary Flow Meters supplier, located in China. Sanitary Flow Meters products are most popular in North America, Mid East, and Eastern Europe. The United States, and India, which export 99%, 1%, and 1% of ultrasonic level transmitters respectively.