APG PG7 user manual - Manual (Page 21)

Rev. A, 12/09 PG7
21
Automation Products Group, Inc.
APG...Providing tailored solutions for measurement applications
Tel: 1/888/525-7300 • Fax: 1/435/753-7490 • www.apgsensors.com • [email protected]
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
Setpoints”on page 18 for details).
Step 3: Press the On/Off 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 first digit flashing.
Step 8: Press (Z) to change the value of the flashing 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 finer
adjustments to the output signal.
Step 9: Press (S) to accept the value of the flashing 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.