Aister instrument for you to solve the problem of natural gas flow meter selection
2021-04-17
Aister analyzes the selection method of natural gas flowmeters from five aspects: instrument performance, fluid characteristics, installation conditions, environmental conditions and economic factors. Various considerations are as follows:
1. Instrument performance: accuracy, repeatability, linearity, range, pressure loss, upper and lower flow rates, signal output characteristics, response time, etc.
2. Fluid characteristics: fluid pressure, temperature, density, viscosity, lubricity, chemical properties, wear, corrosion, scaling, dirt, gas compression coefficient, isentropic index, specific heat capacity, conductivity, sound velocity, miscible flow, pulsating flow, etc.
3. Installation conditions: pipeline layout direction, flow direction, upstream and downstream pipeline length, pipeline caliber, maintenance space, pipeline vibration, grounding, power supply, auxiliary equipment (filtration, blowdown), explosion-proof, etc.
4. Environmental conditions: ambient temperature, humidity, safety, electromagnetic interference, etc.
5. Economic factors: purchase cost, installation cost, maintenance cost, calibration cost, service life, operation cost (energy consumption), spare parts, etc.
According to the five aspects of the primary available instrument types, using the elimination method to select 2-3 types in the comparison, discharge the order, again according to the five aspects of careful evaluation, and finally eliminated to a type of instrument.
The success of the selection largely depends on the selection personnel's exact understanding of the performance quality of the instrument and the characteristics of the measured object. For the performance and quality of the instrument, special attention should be paid to the manufacturer's false publicity and misleading ingredients. The exact understanding of the measurement object is very important, not the user has an accurate understanding of their own measurement object, many selection failures are caused by inaccurate parameters. Some object properties require deep investigation to figure out.
Tips: Flowmeter selection needs professionals with industry experience to avoid undue trouble. The above is the introduction of how to select the natural gas flow meter of Shanghai Aister, and I hope it can be helpful to you.
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