if the t/c o/p is 4-20mv then how plc recognize it
because we are dealing with the 4-20ma in the
plc ????????????????
Answer
In plc, there is a separate I/O MODULE FOR T/C which already have inbuit converter so we dont have to worry on this,First we have to know complete module of plc.thanx
How can we check Zero of DP type Level Transmitter onside?
Answer
close the both valve ie LP & HP then drain the water and then open the vent of LP then connect the HART and do the zero trim by HART then we can find ZERO