Notes in the work of Pressure instrument transmitters

First, let’s understand the structure and function of the industrial pressure transmitter. The industrial pressure transmitter comprises a pressure sensor, measurement conversion circuit, and process connecting parts. Pressure transmitter’s role is to convert the physical pressure transmitters such as gas and liquid sensed by the pressure sensor into standard electrical signals to supply the display alarm instrument, DCS system, recorder, PLC system, etc, for display, measurement, control, and adjustment purposes.

In these jobs, many different problems may occur, its necessary to pay attention to the maintenance and protection of the industrial pressure transmitter.

1、When measuring gas pressure, the pressure inlet should be opened at the top of the process pipe, and the pressure transmitter HART should be installed on the top of the process pipe too, so that the accumulated gas can be easily injected into the process pipes.(https://youtu.be/DgXVSMTo1QY) 

2、When measuring liquid pressure, the pressure inlet should be opened on the side of the process pipe to avoid precipitation and slag accumulation. At the same time, the installation position of the pressure transmitter HART should avoid the impact of the liquid (water hammer phenomenon), to avoid the sensor being damaged by excessive pressure. (https://youtu.be/Jt01OHk-81U) 

3、When measuring steam or other high-temperature medias, it’s necessary to connect a condenser such as a buffer tube(coil), and the working temperature of the pressure transmitter should not exceed the limit. On the other side, the buffer tube needs to be injected with the right amount of water to prevent the superheated steam from contacting the pressure transmitter Hart, and the buffer heat pipe can’t leak air.(https://youtu.be/wTUlXV8hgGg)

  For different needs, our company has other products that can be adapted, such as ATMH(Mlcro-Heart) Differential/Gauge/Absolute Pressure Transmitter, Single Direct Mount Seal Level Transmitter with AT1199ffw, ATl199scw, AT1199efw), Remote Mount Seal Level Transmitter(with AT1199ffw, AT1199scw, AT1199efw), Vortex flow meter, electromagnetic flow meter, etc.

  In combination with the above points, we need to pay attention to relevant matters in different working environments of pressure transmitters to help us improve the service life and use effect of pressure transmitters.