There are many types of instruments, each of which has different uses, different conditions of use or environment, and there are many types of flow measurement. The caliber, material, and flow characteristics are all customized, and all are different. The success of the selection can often play a very important role. How do we choose the most suitable flow meter in the process of selection? Let's reveal these problems one by one.
(1) General selection of flow meters (flow meters): It can be considered from five aspects, such as meter performance, fluid characteristics, installation conditions, environmental conditions and economic factors. The detailed factors in five aspects are as follows:
1. Instrument performance: accuracy, repeatability, linearity, range, flow range, signal output characteristics, response time, pressure loss, etc.
2. Fluid properties: temperature, pressure, density, viscosity, chemical corrosion, abrasiveness, fouling, miscible phase, phase change, electrical conductivity, sound velocity, thermal conductivity, specific heat capacity, isentropic index;
3. Installation conditions: pipe layout direction, flow direction, length of straight pipe section on the upstream and downstream side of the test piece, pipe diameter, maintenance space, power supply, grounding, auxiliary equipment (filter, getter), installation, etc.
4. Environmental conditions: ambient temperature, humidity, electromagnetic interference, safety, explosion protection, pipeline vibration, etc.;
5. Economic factors: instrument purchase fee, installation fee, operation fee, calibration fee, maintenance fee, instrument service life, spare parts, etc.
The above is an important reason for analyzing how to consider various aspects of the flowmeter. The purpose is to eliminate or reduce errors in the use process as much as possible to avoid unnecessary losses. Of course, if a failure occurs during use, we should take corresponding measures to reduce losses and try not to affect other production rhythms.
(1) General selection of flow meters (flow meters): It can be considered from five aspects, such as meter performance, fluid characteristics, installation conditions, environmental conditions and economic factors. The detailed factors in five aspects are as follows:
1. Instrument performance: accuracy, repeatability, linearity, range, flow range, signal output characteristics, response time, pressure loss, etc.
2. Fluid properties: temperature, pressure, density, viscosity, chemical corrosion, abrasiveness, fouling, miscible phase, phase change, electrical conductivity, sound velocity, thermal conductivity, specific heat capacity, isentropic index;
3. Installation conditions: pipe layout direction, flow direction, length of straight pipe section on the upstream and downstream side of the test piece, pipe diameter, maintenance space, power supply, grounding, auxiliary equipment (filter, getter), installation, etc.
4. Environmental conditions: ambient temperature, humidity, electromagnetic interference, safety, explosion protection, pipeline vibration, etc.;
5. Economic factors: instrument purchase fee, installation fee, operation fee, calibration fee, maintenance fee, instrument service life, spare parts, etc.
The above is an important reason for analyzing how to consider various aspects of the flowmeter. The purpose is to eliminate or reduce errors in the use process as much as possible to avoid unnecessary losses. Of course, if a failure occurs during use, we should take corresponding measures to reduce losses and try not to affect other production rhythms.
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