Pressure tap point of the pressure transmitter
Thread Content
When installing a pressure transmitter, how do you determine whether it should be placed above or below the pressure sampling point? Is it based on experience or are there specific guidelines? All I’ve seen measures nitrogen, with some values being higher than those at the pressure measurement point and others lower.
I have seen marks of H and L on pressure transmitters.
There are no specific guidelines for determining whether it is high or low based on process conditions. During installation, the installation manual indicates the difference between high and low installation.
When the medium is gas, the transmitter should be above the pressure tapping point. When the medium is a liquid, the transmitter should be below the pressure tapping point. It’s based on this principle.