Method of selecting flow meters

General selection
Five aspects can be considered, including the performance of flow meters, fluid characteristics, installation conditions, environmental conditions, and economic factors. The detailed factors in five aspects are as follows:
In terms of instrument performance: accuracy, repeatability, linearity, range, flow range, signal output characteristics, response time, pressure loss, etc;
In terms of fluid characteristics: temperature, pressure, density, viscosity, chemical corrosion, abrasiveness, scaling, mixing, phase change, conductivity, sound velocity, thermal conductivity, specific heat capacity, isentropic index;
In terms of installation conditions: pipeline layout direction, flow direction, length of straight pipe sections on the upstream and downstream sides of the test piece, pipeline diameter, maintenance space, power supply, grounding, auxiliary equipment (filters, deaerator), installation, etc;
In terms of environmental conditions: environmental temperature, humidity, electromagnetic interference, safety, explosion-proof, pipeline vibration, etc;
In terms of economic factors: instrument purchase cost, installation cost, operation cost, calibration cost, maintenance cost, instrument service life, spare parts, etc.
(2) The steps for selecting flowmeter instruments are as follows:
1. Preliminary selection of available instrument types based on fluid types and five factors to consider (several types should be available for selection);
2. Collect data and price information for the initial selection type to prepare conditions for in-depth analysis and comparison;
3. Using the elimination method, gradually concentrate on 1-2 types, and repeatedly compare and analyze the five factors to ultimately determine the pre selection target.