Martel Electronics 320 - Manual (Page 25)

Select I/P for transmitters that accept a current or
voltage as an input and produce a pressure as an
output.
Select P/I for transmitters that accept a pressure as an
input and produce a current or voltage as an output.
Select P/P for pneumatic transmitters that accept a
pressure as and input and produce a pressure as an
output. The P/P selection is only available on a Model
320 that is equipped with two (2) pressure sensors.
If the P/P selection is made, an additional prompt
screen will be displayed:
Select “1” if the pressure input to the pneumatic
transmitter is being measured on the left port of the
Model 320.
23
1 = I/P 2 = P/I
3 = P/P
1 = input on left
2 = input on right