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Pressure Gauge The Request
- Aug 09, 2017 -

The choice of pressure gauge should be based on the process of production process pressure measurement requirements, combined with other aspects of the situation, to be a comprehensive consideration and specific analysis, Pressure Gauge generally consider the following questions: the choice of instrument type, Pressure Gauge instrument measurement range, Precision level selection and the use of environmental and media performance considerations.

The choice of range depends on the size of the measured pressure to determine the instrument range. For elastic pressure gauge, the maximum pressure value should not exceed 3/4 of the full scale when measuring the steady pressure. When measuring the fluctuation pressure, Pressure Gauge the maximum pressure value should not exceed 2/3 of the full scale, and the minimum measured pressure should not be low In the full range of 1/3.

Precision selection, according to the production of the maximum measurement error allowed to economic and practical principles to determine the accuracy of the instrument level. Pressure Gauge General industrial pressure gauge 1.5 or 2.5 is sufficient.

Use of environmental and media performance considerations, poor environmental conditions, such as high temperature, corrosion, humidity, vibration, etc.

The properties of the measured medium, such as the level of temperature, Pressure Gauge corrosive, easy to crystallize, flammable, explosive and so on. To determine the type and type of pressure gauge.

The choice of the shape of the pressure gauge: the surface of the pressure gauge on the surface of the general surface diameter of 100mm, in the standard higher or poor lighting conditions with a surface diameter of 200 ~ 250mm, disk table diameter of 150mm.

The choice of pressure point should reflect the true size of the measured pressure.

① to be selected in the measured flow of the pipe part of the line, Pressure Gauge do not choose in the pipeline turning, bifurcation, dead ends or other places prone to whirlpool.

② When measuring the pressure of the flowing medium, the pressure point should be perpendicular to the direction of flow. The inner wall of the pipe and the inner wall of the connecting device should be kept flush and there should be no protrusion or burr.

③ measurement of liquid (gas) body pressure, Pressure Gauge the pressure point should be in the pipeline under (upper), so that the pressure tube does not accumulate gas (liquid) body.

The installation of the pressure gauge

① pressure gauge should be installed in easy observation and maintenance of the place.

② installation site should strive to avoid vibration and high temperature effects.

③ When measuring the vapor pressure, Pressure Gauge the condensate tube should be installed to prevent the high temperature steam from directly contacting the load cell