1, in choosing a gas flow timing, should pay attention to the choice of meter, the measuring accuracy of lower limit in the table on the range, to ensure the measuring accuracy.


2, in choosing a gas flow timing, calculated maximum flow rate Qmax and method for determining the minimum Qmin:
1)

When the bottom of the flow meter, only when a gas equipment, equipment of minimum gas load after calorific value conversion of gas for gas meter, the minimum flow Qmin calculation, similarly reduced the maximum flow rate Qmax calculation.
2)

When the bottom of the flow meter, has more than one gas equipment measurement, gas equipment group from the lower pole of the gas meter shall be the actual minimum gas load (
A single)

After calorific value conversion of gas as the smallest calculation flow Qmin;

The largest gas equipment group, the total gas load after calorific value conversion gas Qmax biggest calculation flow.

3)

Bottom is equipped with many sets of gas equipment when the same flowmeter, if a single gas meter range cannot be covered gas equipment and the minimum flow, maximum flow rate should be considered for grouping gas equipment configuration gas meter or for special gas equipment configuration alone gas meter.
4)

Gas equipment under normal conditions of gas load is the main basis of gas meter selection, extreme use state (

The use of gas equipment accident or less)

When the gas load is only used for gas meter type selection reference.


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Beijing Sincerity Automatic Equipment Co., Ltd, which contributes itself on mass flow meter for creating more useful application.

Abstract: the characteristics of the intelligent vortex precession flowmeter scale installation and maintenance of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation.

Intelligent vortex precession flowmeter performance of seven features: 1.

Built-in smart precession vortex flowmeter pressure, temperature, flow sensor, safety performance is high, compact structure, beautiful appearance.
2.

In situ show that temperature, pressure, the instantaneous flow and cumulative flow.
3.
Smart spin.

More flow meter manufacturers choose model price quote you are welcome to inquire, the following is the characteristic of intelligent vortex precession flowmeter scale installation and maintenance of the article details.

Intelligent vortex precession flowmeter performance of seven features: 1.

Built-in smart precession vortex flowmeter pressure, temperature, flow sensor, safety performance is high, compact structure, beautiful appearance.
2.

In situ show that temperature, pressure, the instantaneous flow and cumulative flow.
3.

Intelligent precession vortex flowmeter with new and unique signal processing amplifier filtering technique, effectively eliminate the pressure fluctuation and pipeline vibration produced by the jamming signal, greatly improve the anti-interference ability of the flowmeter, small flow has excellent stability.
4.

Unique time display and real-time data storage function, no matter what happens, can guarantee the internal data is not lost, * save.
5.

The machine power consumption is extremely low, can run on battery power for a long time in, is the ideal without external power supply on-site display instrument.
6.

Anti-theft function reliable, has the password protection, prevent parameter changes.
7.

Smart header of precession vortex flowmeter can be 180 degree free rotation, convenient installation.

Intelligent vortex precession flowmeter installation and maintenance method: such as precession vortex flowmeter installation maintain undeserved, can affect the accuracy of measurement and other performance, serious when making instrument work not straight: in the electromagnetic flow time, moving and lifting slings should be set on the flowmeter at the ends of the flange neck position, do not set in the measuring tube into the tube rods, hoisting, in order to avoid damage to the lining, also should prevent precession vortex flow meter connector socket damaged by collision.

Must ensure that the precession vortex flowmeter center and the center of the process piping is consistent, and good grounding line, otherwise it will cause error.

Precession vortex flowmeter environment choice: 1, dry and ventilated place, avoid moisture easy seeper place;
2, avoid sharp.
When outdoor, should keep out the rain;
3, as far as possible to avoid strong vibration;

4, avoid strong electromagnetic field equipment, such as big motor, transformer, etc. ;
5, easy maintenance, easy to activities.

Precession vortex flowmeter correct grounding: to make precession vortex flowmeter, reliable work, improve the measurement precision, not affected by external parasitic potential interference, electromagnetic flowmeter should be good grounding line alone, don't take ground wire on the public ground wire of motor or other equipment.
Grounding resistance & lt;
10Ω
。

Normally process piping for metal pipe, grounding itself;

If the process pipe inner surface coated with insulation layer or non-metallic pipelines, on both sides of the precession vortex flowmeter should also be equipped with grounding ring.

But in larger external electromagnetic interference, especially stray current large pipe work frequency, etc, shall be separately set grounding device, usually in a humid place copper bar embedment depth is greater than 1 m, and with total cross section is greater than 4 was more strands of copper wire for the grounding wire connected to the earthing end of the electromagnetic flowmeter.

Precession vortex flowmeter maintenance order: precession vortex flowmeter generally does not need daily maintenance, but easily measured medium in the electrodes and the measuring tube inner surface adhesion, or scaling, must be clean regularly measuring tube wall and electrode, pay attention to don't make lining, electrode is damaged.

Failure occurs when the precession vortex flowmeter, please refer to the following table one by one to find, analyze the reasons and troubleshooting.

1, whether the measuring tube medium full tube, lining and whether scaling on electrode;
2, all the cable connection is reliable;
3, grounding requirements whether meet;

4, whether the excitation coil short circuit or open circuit, its whether the insulation to earth;

5, whether in the piping medium leakage, is influential upstream and downstream of the valve, the suitability of installation position;

6, the environment on the flowmeter interference;
7, whether the converter failure.

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 orifice meter scale information in the application of the gas mixture produced by excellent flow meter, flow meter manufacturer to offer you the quotation.

ZK standard orifice plate is measured flow differential pressure generator, cooperate with all sorts of differential pressure gauge or differential pressure transmitter to measure all kinds of fluid flow in pipes.

Orifice flowmeter throttle device including the ring chamber orifice, nozzle, etc.

Orifice flowmeter with differential pressure transmitter or throttling device.

More flow meter manufacturers choose model price quote you are welcome to inquire, below is the orifice meter scale application in gas mixture the article details.

ZK standard orifice plate is measured flow differential pressure generator, cooperate with all sorts of differential pressure gauge or differential pressure transmitter to measure all kinds of fluid flow in pipes.

Orifice flowmeter throttle device including the ring chamber orifice, nozzle, etc.

Orifice flowmeter throttle device with differential pressure transmitter or u-shaped pressure gage, can measure the rate of flow of liquid, steam, gas, so the orifice meter is widely used in petroleum, chemical, metallurgical, power, light industry and other departments.

Fluid filled with pipes, when they flow through the pipe of the throttle device, a beam to local contraction at the throttling of the throttle device, so that the flow velocity increases, the static pressure is low, so the throttling parts before and after the pressure drop is produced, the pressure difference, the greater the flow of medium flow, in the front and rear of the throttling parts the greater the pressure difference, so the orifice meter can be measured by the size of the pressure difference to measure fluid flow.

This kind of measurement method based on the energy conservation law and the law of flow continuity as a benchmark.
Intelligent throttling device (
Orifice meter)

Is integrating flow, temperature and pressure detection, temperature, pressure, and can automatically compensate the new generation of flowmeter, the orifice meter adopts the new technology of advanced computer technology and micro power consumption, strong function, compact structure, simple operation, easy to use.

Second, features bring orifice flowmeter throttle device structure easy to copy, simple, firm, stable and reliable performance, long service life, low price.

Bring orifice calculation adopt international standards and processing bring orifice meter application range is wide, all of single phase flow are measured, partially miscible flow can also be applied.

Bring about standard throttle device without real flow calibration, putting-in-service proactively.

Bring a body orifice meter installation is more simple, do not need to bring pressure tube, can be directly answering the differential pressure transmitter and pressure transmitter.

Intelligent orifice plate flowmeter features bring about imported monocrystalline silicon intelligent bring about high precision differential pressure sensor, perfect self-diagnosis function bring its intelligent orifice plate flowmeter intelligent orifice flowmeter range can be adjusted from the programming.

Bring about intelligent orifice meter can display at the same time the cumulative flow and transient flow, pressure, temperature.

Bring about have the functions of online, dynamic full compensation, intelligent orifice plate flowmeter has since diagnosis, set range.

Bring is equipped with a variety of communication interface bring bring range wide range, high stability is more than 10:1 intelligent orifice meter technical indicators bring about high precision: & plusmn;
0.
Bring high stability: 075% better than 0.

1% FS/year bring high static pressure: 40 mpa bring set-up work five years in a row without bring negligible resistance temperature, static pressure influence bring about high overpressure & other;
Gas & throughout;

Is a toxic gas mixture, the main two gases containing methane and carbon monoxide, often produced in the mine, in case of fire, can burn, happen & other;
Gas & throughout;
The directly threatens the miner's life safety.
As a result, the mine work for & other;
Gas & throughout;

Attaches great importance to, to remove some necessary security measures, some men carrying a cage with a canary down to the pit, hang cage in the workspace.
It turns out that the canary to & other;
Gas & throughout;

Or other gases are especially sensitive, as long as there is a very weak & other;
Gas & throughout;

, is far from a deadly effect to human body, the canary is unconscious but faint.

The miners notice arrived at the kind of situation, can immediately withdraw from the mine, avoid the happening of casualty accidents.

When measuring the flow of gas mixture can't use with power flow meter, so when choosing flowmeter measurement must understand the characteristics of the gas mixture.
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Abstract: The information on the correct installation method of the standard orifice flow meter is provided by the excellent flow meter and flow meter manufacturers. The orifice flowmeter is a throttling device and a differential pressure sensing element that measures flow. Combined with differential pressure transmitters and actual, recording, accumulating and adjusting instruments, it can be used to measure, accumulate and control the instantaneous flow and cumulative flow of liquid, steam and gas. Throttling device. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details of the correct installation method of standard orifice flowmeters. The orifice flowmeter is a throttling device and a differential pressure sensing element that measures flow. Combined with differential pressure transmitters and actual, recording, accumulating and adjusting instruments, it can be used to measure, accumulate and control the instantaneous flow and cumulative flow of liquid, steam and gas. The throttling device has the advantages of simple structure, convenient installation, reliable use, low price, convenient maintenance, and a wide selection range (the diameter of the standard throttling device can be measured from 50mm to 1200mm, and the diameter of the non-standard throttling device can also be as small as 6mm. up to 3000mm; measuring temperature up to 555°C; pressure resistance up to 42MPa), and the standard throttling device also has the advantages of no need for separate calibration. It is the most widely used and mature product in flow instruments, so it is widely used in Electric power, chemical industry, metallurgy, petroleum, textile, military and other fields. The throttling device is composed of throttling parts, pressure-taking devices (including pressure-taking ports, pressure-inducing pipes and valves, etc.), supporting flanges, and sometimes includes front and rear straight pipe sections that meet the standards. Standard throttling devices include standard orifice plate, standard nozzle, and standard venturi. Standard orifice plate is divided into angle connection (annular chamber or drill hole) according to the pressure taking method, flange pressure taking, radial pressure taking; standard nozzle is divided into nozzle and long diameter nozzle according to form; standard Venturi tube is divided into Venturi according to form Nozzles, Venturi tubes (rough cast or machined or coiled). Non-standard throttling devices include small-diameter orifice plate, 1/4 round orifice plate, round orifice plate, round orifice plate, eccentric orifice plate, double orifice plate, built-in orifice plate, conical inlet orifice plate, etc. Other forms of throttling devices include pitot tubes, uniform velocity tubes, wedges, cones, and the like. When using a standard throttling device, the properties and states of the fluid must meet the following conditions: (1) the fluid must fill the pipe and the throttling device, and flow through the pipe continuously; (2) the fluid flow rate does not change with time or changes very slowly; ( 3) No intersection occurs when the fluid flows through the throttle; (4) The fluid must be a Newtonian fluid, that is, it is physically and thermodynamically homogeneous, single-phase, or can be considered to be single-phase, including mixed gases, solutions And the disperse particle is less than o. 1 m of colloid. There are no more than 2% (mass composition) uniformly dispersed solid particles in the gas, or no more than 5% (volume composition) uniformly dispersed bubbles in the liquid, which can also be considered as single-phase fluids, but the density should take the average density. ; (5) Before the fluid flows through the throttling member, the flow beam is a non-swirl flow parallel to the axis of the pipeline. Standard throttling devices are not suitable for flow measurement of dynamic and critical flows. The throttling device artificially causes throttling in the pipeline where the medium flows. When the measured medium flows through the throttling device, it causes a local contraction, the flow beam is concentrated, the flow velocity increases, and the static pressure decreases, so the upstream and downstream of the throttling piece A static pressure difference is created on both sides. There is a certain functional relationship between the static pressure difference and the flow rate. The greater the flow rate, the greater the static pressure difference generated. Therefore, the flow rate can be measured by measuring the differential pressure. The difference between the orifice flowmeter and other flowmeters is that the orifice flowmeter is designed according to the parameters of the drawing, and finally processed and produced, and only the material of the orifice plate is selected according to the measuring medium. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'The Correct Installation Method of Standard Orifice Flow Meter'
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