Abstract: the scale vortex flowmeter piping installation requirements information produced by excellent flow meter, flow meter manufacturer to offer you the quotation.
1.

Installation of vortex street flowmeter pipe should be full of measured medium, the flow of vortex flowmeter is the flow of fluid and the pipe line.
2.

Should avoid to install on the strong mechanical vibration of pipeline.
3.

When measured medium contains many impurities, should in the vortex flow.

More flow meter manufacturers choose model price quote you are welcome to inquire, here is a vortex flow meter scale piping installation requirements article details.
1.

Installation of vortex street flowmeter pipe should be full of measured medium, the flow of vortex flowmeter is the flow of fluid and the pipe line.
2.

Should avoid to install on the strong mechanical vibration of pipeline.
3.

Measured medium contains many impurities, the vortex street flowmeter beyond the length of the straight pipe upstream requirements add filter.
4.

Vortex street flowmeter installation should be avoided in the strong electromagnetic interference, the space is little, and maintenance is not convenient.
5.

Straight pipe required a vortex flowmeter, flow meter should be installed in a horizontal, vertical, inclined (
The liquid flow from bottom to top)
Its size is the same line.

Upstream and downstream of the sensor should be configured with a certain length of straight pipe, the straight pipe length should comply with the former 15 ~ 20 d, straight pipe after 5 ~ 1 od demands.

B, if the flowmeter installation point upstream of reducer, upstream flow meter shall be not less than 15 d (
D for pipe diameter)

The straight pipe sections, such as the downstream straight pipe section should be not less than 5 d.

C, if install point of upstream have divergent tube flowmeter, flow meter should be not less than 25 d (upstream
D for pipe diameter)

Downstream of the straight pipe section, should not be less than 5 d d straight pipe section, if the upstream flow meter installed point 90 & deg;

Elbow joint or downward, the upstream flow meter shall be not less than 20 d straight pipe sections, such as the downstream straight pipe section should be not less than 5 d.

E, if the upstream flow meter installed point on the same plane has two 90 & deg;

Elbow, upstream flow meter shall be not less than 25 d straight pipe sections, such as the downstream straight pipe section should be not less than 5 d.

F, if the upstream flow meter installed point in different plane has two 90 & deg;

Elbow, upstream flow meter shall be not less than 40 d straight pipe sections, such as the downstream straight pipe section should be not less than 5 d.

G, flow control valve or pressure regulating valve installed downstream of the flow meter in 5 d in the distance as far as possible, if must be installed in the upstream of flowmeter, when fully open valve can meet the requirements, upstream flow meter shall be not less than 25 d straight pipe section, should be not less than 5 d downstream straight pipe sections, such as when the valve can only meet the requirements of half open, upstream flow meter shall be not less than 50 d straight pipe sections, such as the downstream straight pipe section should be not less than 5 d.

H, flowmeter upstream if a piston or plunger pump, piston or roots fan, compressor, upstream flow meter shall be not less than 50 d straight pipe sections, such as the downstream straight pipe section should be not less than 5 d.

Special note: upstream of vortex street flowmeter installation point relatively close if equipped with valve, switch valve and affect the service life of the flowmeter is great, very easy to cause * to the flowmeter.

Flow meter to avoid very long pipeline on aerial installation, after such a long time, because of the flowmeter prolapse is very easy to cause the flowmeter Yu Falan seal leak, if necessary when installation, must be set separately in the upstream and downstream of the 2 d flow meters place pipe clamp device.

Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
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Abstract: the electromagnetic flow meter scale using error analysis in the examples of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation.

Electromagnetic flowmeter has many advantages, but improper selection, installation and use, will cause the error increases, the value is not stable, and even the table body is damaged, will now be produced in the operation of the electromagnetic flowmeter in a brief analysis of error.
1, the tube liquid underfill.
Due to the.

More flow meter manufacturers choose model price quote you are welcome to inquire, here is the electromagnetic flowmeter scale using instance article details in the error analysis.

Electromagnetic flowmeter has many advantages, but improper selection, installation and use, will cause the error increases, the value is not stable, and even the table body is damaged, will now be produced in the operation of the electromagnetic flowmeter in a brief analysis of error.
1, the tube liquid underfill.

Due to lack of back pressure or flow sensor installation location, leading to the measuring tube filled with liquid to level of failure phenomenon due to not full and flow conditions have different performance.

If a small amount of gas in pipe duct in stratified flow and wave flow, fault phenomenon characterized by error increases, the flow measurement values do not tally with the actual value;

If flow is the flow of air bubbles or plug flow, fault phenomenon in addition to the measured values do not tally with the actual value, will be output by gas phase instantaneous covered electrode surface rock;

If the gas phase stratified flow in horizontal pipeline flow cross-section part increases, the liquid under the degree of pipe increases, also can appear the output, if the liquid under line situation is serious, so that the electrode surface is below the output will appear super full phenomenon.

Example 1 a shipyard has a DN80mm electromagnetic flowmeter measurement of water flow, operation personnel flow to zero after close the valve, the output instead of to achieve full value.

Spot checks found that only a short tube, sensor downstream water directly into the atmosphere, the cut-off valve is installed in the upstream of sensor and sensor tube after all water emptying valve is closed.

Adapted to the valve position 2, the fault is solved.

This kind of the cause of the problem in the case of the factory after-sales service is often encounter, when the error in the engineering design.
2, the solid phase in the liquid.

Powder, particles, or fiber in the liquid to solid, the possible fault;
1) slurry noise;
(2) electrode surface defiled;

(3) insulation sediments or sedimentary cover or lining electrode;

(4) the lining by wear or by sediments, narrow flow cross-section.
Example 2 conductive deposits short-circuit effect.

Electromagnetic flow sensor measurement of pipe insulation lining if deposited conductive material, traffic signals will be short circuit and make the instrument failure.

Because of conductive material is sedimentary gradually, this kind of failure usually will not appear in the debugging stage, and to run after a period of time.

A diesel engine factory electrolytic process test device, cutting tool workshop with DN80mm instrument measurement and control of saturated salt electrolyte flow for zui better cutting efficiency.

At first the meter running, continuous use 2 months later, feel the flow display value more and more small, until the traffic signal is close to zero.

On-site inspection, found that the insulation layer deposits a layer of yellow rust, the surface is wiped clean after the meter running.

Yellow rust layer is caused by a large number of iron oxide deposition in the electrolyte.

This example is a run-time failure, although not see more failures, but if black metal pipeline corrosion is serious, the sedimentary rust layer, also can have the effect of short circuit.

Who started running normal, over time, the flow shows more and more small, should be analyzed with the possibility of such failure.

3, possible crystallization liquid, electromagnetic flowmeter should be used carefully.

Some easy crystallization chemical material in normal under the condition of normal temperature measurement, as a result of the transmission fluid conduit has good thermal insulation, the insulation not crystallization at work, but difficult to implement electromagnetic flow sensor measurement of tube, thermal insulation, therefore, when the fluid flows through the measuring tube is caused by cooling wall in a layer of solids.

Due to switch to other principle of crystallization of the flowmeter measurement also exists, so in the case of no other better way, can choose a kind of measuring tube length is very short & other
Ring & throughout;
（
oring）

Electromagnetic flow sensor, and the flow meter of upstream pipe thermal insulation shall be strengthened.

On the pipeline connection methods, considering flow sensor tear open outfit is convenient, when once the crystallization can easily remove the maintenance.

Example 3 electromagnetic flowmeter can't work normally caused by liquid crystal examples are not uncommon.

Hunan, for example, some smelters to install a batch of electromagnetic flowmeter measurement solution flow rate, because of electromagnetic flowmeter sensor measuring tube is difficult to implement the thermal insulation, the lining after a few weeks and electrode on it with a layer of crystal, leading to the signal source resistance become large, said value disorder.

Because this batch of larger diameter electromagnetic flowmeter, frequent unbearable unpick and wash, so after zui or switch to open channel flow meter.

4, the problems caused by improper selection and grounding electrode ring material.

Caused by material and does not match the measured medium fault of electromagnetic flowmeter with parts in contact with the medium and grounding electrode, the matching misconduct in addition to the corrosion problem, as long as it is electrode surface effect.
Surface effect should be: (1) chemical reaction (
Membrane surface blunt words, etc. )
；
(2) and electrochemical polarization (
Produce potential)
；
(3) catalysis (
Electrode surface generating aerosol, etc. )
。

Grounding ring also have these effects, but the influence degree.

Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
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Abstract: the scale in the points for attention during the installation of v cone flowmeter information produced by excellent flow meter, flow meter manufacturer to offer you the quotation.

A, V cone flow sensor and meter installation technical requirements.
（
1)

V cone flow sensors and flow meter installed on pipe, can be a level, it can also be tilted, also can be vertical, but should be easy installation and maintenance is advisable.
（
。

More flow meter manufacturers choose model price quote you are welcome to inquire, here is a scale in the points for attention during the installation of v cone flowmeter article details.

A, V cone flow sensor and meter installation technical requirements.
（
1)

V cone flow sensors and flow meter installed on pipe, can be a level, it can also be tilted, also can be vertical, but should be easy installation and maintenance is advisable.
（
2)

V cone flow sensor and the meter must be installed in line with its corresponding nominal diameter.
（
3)

V cone flow sensor and the flow upstream and downstream straight pipe should be circular, the lining is smooth, its diameter is the same as the nominal diameter flowmeter.
（
4)

When installation, V cone flow sensor and the flow of flowmeter must be consistent with the flow of fluid.

If the installation location of the ambient temperature more than 70 & deg;
Fission installation form C, recommended.
（
5)

V cone flow sensors and flow meter in upstream and downstream side should be configured with a certain length of straight pipe, the length should satisfy the upstream 0 ~ 3 d, downstream 0 ~ 1 d, long straight pipe for flow measurement.
（
6)

In installation V cone flow sensors and flow time, should as far as possible to ensure that the upstream or downstream flow meter and straight pipe concentric.
（
7)

If the site does need to install the thermometer, regulating valve, and other measurement and control device, good advice zui installation in V cone flow sensor and the downstream end of the flow meter of 2 ~ 5 d.

Second, the installation V cone flow sensors and flow time, need to pay special attention to matters.
（
1)

In choosing a V cone flow sensor and meter type, shall, according to the user's requirements, process parameters and the field environment, combining with V cone flow sensor and meter technology parameters to choose the appropriate product model.
（
2)

In choosing a V cone flow sensors and flow time, pipe diameter must be filled in according to the actual diameter circle.
（
3)

Choose V cone flow sensor and meter, when writing model, part function is only applicable to intelligent integration of V type flowmeter.
（
4)

In choosing a V cone flow sensors and flow time, attention should be paid to the choice of temperature and pressure compensation function.
一个。

In choosing a V cone flow sensors and flow time, liquid without compensation.
b。

In choosing a V cone flow sensors and flow time, measuring gas should be with temperature and pressure compensation.
c。

In choosing a V cone flow sensors and flow time, measuring the saturated steam should temperature compensation.
d。

In choosing a V cone flow sensors and flow time, superheated steam temperature and pressure should be brought in compensation.
（
5)

In choosing a V cone flow sensors and flow time, the user to specify transmitter, should consult technical parameters in the transmitter, determine the integration.

V cone flow sensor and the meter is the introduction of foreign advanced technology design and production of a new type of the flow measurement device.

The device is widely used in petroleum, chemical, natural gas, mining, metallurgy, steel, power, water conservancy, water supply and drainage, paper making, sugar, pharmaceutical, beverage, textile, printing and dyeing, chemical fiber, environmental protection and municipal engineering in the areas of measurement and measurement.

Especially in the measurement of coke oven gas, blast furnace gas, natural gas, flue gas, liquefied petroleum gas (LPG) oil, organic gases and materials such as serum medium, such as viscosity, pollution V cone flow sensor and meter has a unique advantage.

Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
Whenever the question of mass flow meter insertion ultrasonic flow meter is raised, one comes across the term ''.
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Abstract: Yuanneng ultrasonic flow meter application information in urban sewage treatment plants is provided by excellent flow meter and flow meter manufacturers and quotation manufacturers. Yuanneng ultrasonic flowmeter is used in urban sewage treatment plants: In order to improve the increasingly serious water pollution situation, many cities have established sewage treatment plants, the sewage treatment rate has been significantly improved, and the water environment has gradually improved. With the rapid development and popularization of computer technology. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following is the article details of the application of Yuanneng ultrasonic flowmeters in urban sewage treatment plants. Yuanneng ultrasonic flowmeter is used in urban sewage treatment plants: In order to improve the increasingly serious water pollution, many cities have established sewage treatment plants, the sewage treatment rate has been significantly improved, and the water environment has gradually improved. With the rapid development and popularization of computer technology, the data acquisition system has also been used rapidly. The application of this system in the production process can collect, monitor and record the process parameters of the production site, and provide information and means for improving product quality and reducing costs. Data acquisition is to collect the analog signal output by the sensor and convert it into a digital signal that the computer can recognize and then process it further. Ultrasonic flow meters are instruments that measure flow by detecting the action of fluid flow on ultrasonic pulses. Like the electromagnetic flowmeter, it is a barrier-free flowmeter because the flow channel of the instrument is not provided with any obstructions. It is a type of flowmeter suitable for solving the difficult problem of flow measurement. It is also one of the flow meters that has developed rapidly in recent years. 2 Principles of Ultrasonic Flowmeter 2.1 Composition The non-contact ultrasonic measurement system consists of two parts: an ultrasonic signal transducer and an electronic transmitter and receiver installed at a distance. The transducer continuously emits a series of ultrasonic waves and receives reflected echoes from the liquid or solid surface being inspected. The microprocessor in the transmitter further processes the signal and displays the data as an LCD digital. (1) Sound waves are a type of mechanical waves with frequencies exceeding 2×Sound waves at 104Hz are ultrasonic frequencies that are inaudible to the human ear. The relationship between its wavelength L, frequency f and speed c is L=c/f (2) The reflection and refraction of ultrasonic waves When the sound wave propagates to the interface between the two media, part of it can return to the original medium, which is called reflected wave, and the other part can return to the original medium. The energy continues to propagate through the surface of the medium to the surface of another medium, which is called refracted wave. The law of reflection: Sina/ Sina'==C1/C2 where the incident angle a, the incident wave velocity C1, the reflection angle a', the reflected wave velocity C2. The law of refraction: SINa/SINb==C1/C2 In the formula, the incident angle a, the refraction angle b, C1 is the *medium wave speed, and C2 is the second medium wave speed. 2.2 The characteristics of ultrasonic flowmeter The remarkable characteristic of ultrasonic wave is that the frequency is high, so the wavelength is short, the diffraction phenomenon is small, and the directionality is good. Can be called a ray that propagates directionally. In liquids and solids, the attenuation is small, the penetration ability is large, and there will be significant reflections when encountering impurities or interfaces. Ultrasonic sensors are widely used in many scientific fields, ie industrial production, by using these salient features of ultrasonic waves. 2.3 Ultrasonic transducer Ultrasonic transducer, also known as ultrasonic probe, is a device that realizes the mutual conversion of electrical energy and sound energy. Ultrasonic transducer, namely probe. There are many kinds of ultrasonic transducers used for detection, such as piezoelectric type, magnetostrictive type, electromagnetic type, vibrating plate type, elastic surface wave type and so on. In the detection technology, the piezoelectric type is mainly used. 2.4 Analysis of advantages and disadvantages Advantages: ◆Can be used for non-contact measurement; ◆Measurement without flow obstruction, no pressure loss; ◆It can measure non-conductive liquid, which is a supplement to electromagnetic flowmeter without obstruction measurement. ◆The biggest advantage of ultrasonic flow level is that it can measure unobstructed flow without cutting off the pipeline. It is a flow meter that does not touch the medium. Disadvantages: ◆The propagation time can only be used for cleaning liquids and gases; while the Doppler method can only be used to measure liquids containing quantitative suspended particles and air bubbles; ◆The measurement accuracy of the Doppler method is not high. 3 Application of ultrasonic measurement is a method of measuring the storage of a container by determining the level. The ultrasonic sensor sends ultrasonic pulses to the surface of the material from above and receives the echoes reflected from the surface. It measures the propagation time of ultrasonic waves and calculates the distance from the reflecting surface. The travel time is an intuitive dimension of the distance between the ultrasonic sensor and the level. The distance a sound wave travels is the product of the travel time and the speed of sound. If the position of the ultrasonic sensor is known, then the level (and thus the reserve) can be converted. The speed of sound in air varies widely. Therefore, the acoustic sensor needs to be temperature compensated. If it is used for other gases other than air, it should be calibrated accordingly. 3.1 Measuring flow In the flow measuring instruments of sewage treatment plants, there are only two types of flow meters according to the installation type: pipeline type and open channel type. Open channel ultrasonic flowmeter is a kind of flowmeter widely used in sewage treatment plants.
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Abstract: The information on the precautions for the use of meters and sensors is provided by the excellent manufacturers of flowmeters and flowmeters. In construction machinery vehicles, the role of instruments and sensors is obvious, which can effectively monitor the working status of the whole machine and components. If it does not work normally, it cannot feed back information to the operator, and it is impossible to find hidden faults in time. one. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the article on the precautions for the use of meters and sensors. In construction machinery vehicles, the role of instruments and sensors is obvious, which can effectively monitor the working status of the whole machine and components. If it does not work normally, it cannot feed back information to the operator, and it is impossible to find hidden faults in time. 1. Precautions for the use and installation of the instrument. 1. The meter must be used with its companion sensor. 2. The wires should be connected reliably and should not be in contact with other metal conductors. 3. When installing and disassembling, do not knock or bump. Ammeter and voltmeter should also pay attention to 1. The positive and negative polarities of the ammeter cannot be reversed. In general, the construction machinery is the negative ground of the whole vehicle, then the ammeter“?”The terminal should be connected to the positive pole of the battery.“+”The terminal should be connected to one end of the alternator armature (B+). 2. Before wiring the ammeter, clean the contact surfaces of washers, nuts, bolts, etc. with sandpaper. When installing the nuts, apply a little clean oil to prevent rust and facilitate disassembly. The flat insulating washers should be in good condition, and the insulating washers are between the spring washers. A flat gasket should be installed and connected firmly, so as not to cause the wire to heat up due to poor contact, or even burn out the instrument and wiring harness. 3. When wiring the ammeter and voltmeter, you should pay attention to turn off the power supply of the whole vehicle to avoid short circuit. 4. on the voltmeter“+”Connect the battery to the positive pole,“?”The pole is connected to the negative pole of the battery, and it cannot be wrongly connected. 2. Precautions for the use and installation of the sensor. Fuel sensor 1. The movement of the float in the fuel tank should be flexible, otherwise the indication will be inaccurate due to the interference between the float and the partition of the fuel tank. 2. The grounding of the oil sensor should be reliable. 3. The resistance value of the variable resistance sensor of the moving magnet oil gauge will increase as the oil level inside the tank increases. Temperature sensor 1. The grounding of the sensor should be reliable, and the wire connection of the sensor should not be short-circuited. 2. The thermistor of the moving magnetic water temperature gauge sensor will decrease in resistance value as the temperature rises. Pressure sensor 1. The variable resistance value of the moving magnet pressure gauge increases as the pressure increases. 2. When installing the pressure sensor, do not screw the housing directly. 3. If the sensor has an alarm, the sensor line and the alarm line cannot be reversed. Speed ​​sensor 1. Make sure that the clearance between the bottom of the sensor and the top of the engine tooth is 0.8 to 1.0 mm, otherwise the indication will be inaccurate. The correct installation method is to screw the sensor to the bottom first, that is, the bottom of the sensor touches the top of the flywheel tooth of the engine, then turn it counterclockwise 2/3 turn, and then fasten it with the back tightening nut. 2. When idling, the speed sensor outputs the induced voltage Urms>1.0V. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Instrument. Precautions for the use of sensors'
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