1, the choice of range: according to the size of the measured pressure to determine the instrument range. For elastic pressure gauge, in measuring the stable pressure, the maximum pressure value should not exceed the full range of 3/4; measuring fluctuations in pressure, the maximum pressure value should not exceed the full range of 2/3. The minimum measured pressure value should not be less than 1/3 of the full range.
2, precision selection: according to the production of the maximum permissible error in measurement, in order to economically determine the principle of affordability of the instrument's precision level. General industrial pressure gauge 1.5 or 2.5 level is sufficient, scientific research or precision measurement with 0.5 or 0.35 level of precision pressure gauge or standard pressure gauge.
3, the use of environmental and media performance considerations: harsh environmental conditions, such as high temperature, corrosion, moisture, vibration, etc., the performance of the measured medium, such as temperature, corrosive, crystallization, flammable, explosive, etc., in order to determine the type and model of the pressure gauge.
4, the choice of threaded interfaces: threaded interfaces are generally customized according to the requirements of field use, the order needs to be with the manufacturer to explain the interface thread size.
Pressure sensors choose METTLER TOLEDO, METTLER TOLEDO pressure sensors integrated all the safety features, such as anti-detachment protection, 360 ° check and safety downward limit. As a result, system safety is guaranteed, whatever the situation.