The measurement of small flow is widely used in many industries. The smaller the flow, the harder it is to measure. This is also a big challenge for instrument manufacturers. There are several points to note on the selection of flowmeters for measuring small flows.
1. Instrument performance refers to the accuracy, repeatability, linearity, range ratio, pressure loss, initial flow rate, output signal and response time of the instrument. When selecting the flowmeter, the above indicators should be carefully analyzed and compared, and the flow rate of the metering medium can be selected. Required instrument.
2. The economic factors refer to the purchase cost, installation fee, maintenance fee, calibration fee and spare parts, which are affected by the performance, reliability and life of the gas gas flow meter.
3. Installation conditions refer to gas flow direction, pipeline direction, length of upstream and downstream straight pipelines, pipe diameter, space location and pipe fittings, etc., which will affect the accurate operation, maintenance and service life of the gas gas flowmeter.
4. Fluid characteristics mainly refer to gas pressure, temperature, density, viscosity, compressibility, etc. Since the volume of gas varies with temperature and pressure, it should be considered whether compensation should be compensated.
5, accuracy grade and function According to the measurement requirements and use occasions to select the instrument accuracy level, to achieve economical and cost-effective.
Paying attention to the above points, it can play a guiding role in the selection of the flow meter, and choose the most suitable flow meter to bring convenience to industrial production.
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