Pressure gauge industry experts, the biggest pressure gauge manufacturers in China

E-mail: hongqi@cnhongqi.com
Home > NEWS > Content
Stainless Steel Pressure Gauge Safe And Reliable
- Oct 26, 2017 -

In petrochemical production, the so-called pressure refers to the gas or liquid evenly and vertically acting on the unit area of the force. Especially in the petrochemical production process, Stainless Steel Pressure Gauge often encounter pressure and vacuum measurements, Stainless Steel Pressure Gauge much higher than the atmospheric pressure of high pressure, high pressure and much lower than atmospheric pressure vacuum measurement.

When measuring the steady pressure, the normal operating pressure should be in the instrument measuring range of the upper limit of 1/3 --- 2/3;

When measuring the pulsating pressure (such as the pressure at the outlet of the pump, compressor and fan), the normal operating pressure should be 1/3 ~ 1/2 of the upper limit of the instrument measuring range;

When the volume is high and medium pressure, Stainless Steel Pressure Gauge the normal operating pressure value should not exceed 1/2 of the upper limit of the instrument measuring range.

In the pressure pipe on the hole, you must use the mechanical hole method (drill or hand pull drill), Note: the wind pressure pipe hole can be used gas cutting method, cut the hole after grinding with a round file; Stainless Steel Pressure Gauge pressure source parts End, not beyond the device or pipe wall.

When there is a protruding object (such as a temperature measuring element) in the pipe, the pressure source component should be installed in front of it.

The location of the pressure source components should be chosen where the flow of the media is stable, avoiding areas where the pipe is bent, bifurcated, and the stream forms eddy currents.

When the pressure must be in the vicinity of the adjustment valve, if the pressure in the front of the valve, the distance from the valve should be not less than 2 times the diameter; Stainless Steel Pressure Gauge if the pressure in the mouth, then the distance from the valve should be not less than 3 times the diameter.

When measuring the pressure of a turbid medium such as dust, solid particles, Stainless Steel Pressure Gauge or sediment, the source part should be tilted upward. In the level of the process pipeline should be appropriate to install a sharp angle.

When measuring the pressure of liquids, Stainless Steel Pressure Gauge vapors and condensable gases at temperatures above 60 ° C, the source parts of the in-place pressure gauges shall be provided with ring or U-shaped condensing bends.

1. The upper limit of the pressure gauge is based on the size, stiffness and non-linear conditions of the spring tube. The upper limit of the measurement is 1 × 10 n, 1.6 × 10 n, 2.5 × 10 n, 4 × 10 n , 6 × 10 n five series, n is a positive integer, negative integer or zero.

2. Digital pressure gauge pressure range: -100kPa ~ 2kPa ~ 260MPa.

3. Pressure gauge below 1/3 range part of the lower accuracy, Stainless Steel Pressure Gauge should not be used. When selecting the upper limit of the measurement, in order to ensure safe and reliable operation of the pressure gauge, to maintain its service life, Stainless Steel Pressure Gauge generally should be greater than the maximum use of pressure 1 /

4. Select the scope of use, according to the general situation of the load situation, should use the full range of 1/3 to 2/3 is appropriate, because the use of high accuracy range, Stainless Steel Pressure Gauge and in both stable and fluctuating load use.