Flowmeter Accuracy, Repeatability, Linearity

It can be considered from five aspects, which are flowmeter performance, fluid characteristics, installation conditions, environmental conditions and economic factors. The detailed factors of the five aspects are as follows:
Instrument performance: accuracy, repeatability, linearity, range, flow range, signal output characteristics, response time, pressure loss, etc.;
Fluid properties: temperature, pressure, density, viscosity, chemical corrosion, abrasiveness, scaling, miscibility, phase change, electrical conductivity, sound velocity, thermal conductivity, specific heat capacity, isentropic index;
In terms of installation conditions: pipeline layout direction, flow direction, length of straight pipe section on the upstream and downstream sides of the test piece, pipe diameter, maintenance space, power supply, grounding, auxiliary equipment (filter, air eliminator), installation, etc.;
Environmental conditions: ambient temperature, humidity, electromagnetic interference, safety, explosion-proof, pipeline vibration, etc.;
In terms of economic factors: instrument purchase fee, installation fee, operation fee, calibration fee, maintenance fee, instrument service life, spare parts, etc.