What are the tips for the selection of flow meters?

The selection of the flow meter, ie, the flow meter, plays an important role in the effective use of the meter. Due to the complexity of the measured object, the variety of instruments and the performance indicators, the complexity of the meter selection is caused. There is no perfect flow meter, each instrument has its own characteristics and scope of application, the purpose of selection is mainly to avoid weaknesses in many varieties, choose the most appropriate flow meter for their application.

(1) General selection of flow meter (flow meter):

It can be considered from five aspects: instrument performance, fluid characteristics, installation conditions, environmental conditions, and economic factors. The following is a detailed description:

1, instrument performance: accuracy, repeatability, linearity, range, flow range, signal output characteristics, response time, pressure loss, etc.;

2. Fluid characteristics: temperature, pressure, density, viscosity, chemical corrosion, abrasiveness, scaling, miscibility, phase change, electrical conductivity, sound velocity, thermal conductivity, specific heat capacity, and isoentropy index;

3. Installation conditions: pipeline layout direction, flow direction, length of straight pipe on the upstream and downstream side of the test piece, pipe diameter, maintenance space, power supply, grounding, auxiliary equipment (filter, air eliminator), installation, etc.;

4. Environmental conditions: ambient temperature, humidity, electromagnetic interference, safety, explosion protection, pipeline vibration, etc.;

5, economic factors: instrument purchase fees, installation fees, operating costs, calibration fees, maintenance fees, instrument life, spare parts and so on.

(II) The steps for the flowmeter instrument selection are as follows:

1, according to the type of fluid and five considerations to select the type of instrument available (to select several types for selection);

2. Collect data and price information for the type of primary election to prepare for in-depth analysis and comparison;

3, using the elimination method to gradually focus on 1 to 2 types, the five factors must be repeatedly compared and analyzed to determine the pre-selected goals.

The ability to select an effective flow meter is of great significance for production measurement. Through the above considerations for the flow meter and the selection steps, it is hoped that the company will help the flow meter selection.