- When measuring gas pressure, the pressure tapping point should be located in the upper part of the process pipeline.
- When measuring liquid pressure, the pressure tapping point should be located in the lower part of the process pipeline, within a 0-45° angle from the horizontal centerline of the pipeline.
- When measuring steam pressure, the pressure tapping point should be located in either the upper part of the process pipeline or the lower part within a 0-45° angle from the horizontal centerline.
- The installation position of the pressure tapping components should be selected in a stable flow section of the process medium.
- When pressure tapping components and temperature tapping components are on the same pipeline, the pressure tapping component should be installed upstream of the temperature tapping component.
- The end of the pressure tapping component should not extend beyond the inner wall of the process equipment or pipeline.
- When measuring the pressure of a turbid medium containing dust, solid particles, or sediments in a vertical process pipeline, the tapping component should be installed at an upward incline with an angle greater than 30 degrees from the horizontal. In a horizontal process pipeline, it should be installed at an acute angle along the flow direction.
- The installation position of the pressure transmitter should be well-lit, easy to operate and maintain, and should not be installed in areas with vibration, moisture, high temperatures, corrosion, or strong magnetic field interference.
- The installation position of the pressure transmitter should be as close as possible to the tapping component. For transmitters measuring low pressure, the installation height should be consistent with the height of the tapping point, especially when measuring liquid or condensable gas media.
- When measuring gas media pressure, the transmitter installation position should be higher than the tapping point. When measuring liquid or steam pressure, the installation position should be lower than the tapping point, in order to reduce the need for additional exhaust or drainage facilities.
