EJA transmitter​ pays attention to daily maintenance during use, which can extend its service life. However, if it is used for a long time and the daily maintenance is not paid attention to, it will also cause damage to the transmitter. Here we will introduce the damage to the capillary of the transmitter and how to repair it. The capillary damage of the EJA transmitter can be repaired by the following common methods, and you can refer to it.

After switching on the power supply, if the output of the pressure transmitter​ is too high and greater than 10VDC or the output is too low and less than 2.0VDC after a given input pressure signal, and the input pressure signal is changed and the zero point and span screws are adjusted, the output will have no response.

According to the national standard "Verification Regulations for Pressure Transmitters", the standard instrument used for verification should be a digital pressure test instrument that is easy to carry and has good anti-interference performance. The pressure source needs to be equipped with a pneumatic pump and a hydraulic pump.

Keywords: Yokogawa Instrument, Coal Chemical Industry, Hydrogen PermeationAbstract: In the coal chemical industry, pressure transmitters are used in many occasions. However, compared with traditional industries, there are many working conditions where the medium is black water or gray water, the tem