How to fix inaccurate readings of the EJA118E flanged differential pressure transmitter?
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On-site, there is a calibrated flow meter for measuring diesel; an EJA118E flanged differential pressure transmitter is installed there, and the oil temperature is around 50°C. Currently, the value read by this transmitter remains constant at 68.2%. Even after adjusting the control valve and changing the frequency of the oil pump, the value of the transmitter doesn’t change. I’m seeking advice on how to resolve this issue; waiting for a response urgently. . . . .
Remove it to check the diaphragm box; press it with your thumb (not your fingernails).
Additionally, the transmitter’s flange is mounted directly on the shut-off valve, with no vent in between; any internal leakage in the shut-off valve cannot be addressed through venting, and the transmitter cannot be reset to zero
It cannot be removed; the shut-off valve leaks internally, and oil will leak if it is taken apart. If it isn’t removed, can it be assumed that the issue lies with the diaphragm box?
Are the temperatures at both ends of the diaphragm box equal? You can apply static pressure to see if there is any change.
Call customer service; they have technicians available to help you resolve the issue. If the problem cannot be solved over the phone, a technician will be sent to your location to fix it for you