APG PG-7 - Page 20

Rev. A2, 07/16 PG7
21
Automation Products Group, Inc.
Analog Low (AL CAL) & Analog High (AH CAL) Calibration:
Allows the user to calibrate or “trim” the endpoints of the analog signal
output (i.e. 4mA & 20mA or 0V & 2V/5V)
Calibrating the Analog Signal End-Points:
Step 1: Use a calibrated meter to monitor the analog output signal.
Step 2: Force a low analog output signal (i.e. 4mA or 0V) either by adjusting
the applied pressure or by adjusting the Analog Setpoints (see “Analog
Low & Analog High Setpoints” on page 20 for details).
Step 3: Press the On/O button once to enter the main setup menu.
Step 4: Press (Z) to cycle through the options until Output is displayed.
Step 5: Press (S) to access the Output Settings menu.
Step 6: Press (Z) to cycle through the setup options until AL CAL is
displayed.
Step 7: Press (S) to access the Analog Low Calibration value. A 5-digit
number will appear with the rst digit ashing.
Step 8: Press (Z) to change the value of the ashing digit.
NOTE: Increasing this 5-digit number will increase the output signal.
Changing the digit farthest to the left will produce the coarsest adjustment,
while each successive digit moving to the right will cause subsequently ner
adjustments to the output signal.
Step 9: Press (S) to accept the value of the ashing digit and advance to the
next digit. Repeat steps 6 and 7 until the desired Analog Output signal
is displayed on the meter. After the last digit is accepted by pressing
(S), the display will return to the output menu.
Step 10: Press (S) to reenter the Output Settings menu.
Step 11: Press (Z) to cycle through the options until AH CAL is displayed.
Step 12: Repeat Steps 5-7 to adjust the Analog High Calibration value.
Step 13: To exit the output menu, press (Z) until EXIT is displayed and press
(S) to exit to the main setup menu.
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