1) Disconnect the transducer signal and replace it with a stable current or voltage source capable of inputting 4.000 to 20.000 mA or 1.000 to 5.000 V signal.
2) Set the input signal to 4.000 mA or 1.000 V as applicable.
3) Using the Up/Down arrow keys adjust the displayed value so it reads 4.000 mA / 1.000 V.
4) Set the input signal to 20.000 mA or 5.000 V as applicable.
5) Using the Left/Right arrow keys adjust the displayed value so it reads 20.000 mA / 5.000 V.
6) Recheck step 2) No further adjustment is normally needed if the Zero is adjusted at exactly 4.0 mA.
7) Disconnect the calibrator signal and reconnect the transducer signal.
8) Press the [Diag] key to return to the selection screen.