Panametrics DigitalFlow GM868, Service Manual

Page: 22 / 72

Chapter 1. Calibration
12 DigitalFlow™ GM868 Service Manual
1.7 Testing the Alarm Relays (cont.)
Note: The procedure for testing Alarm Relay A is identical to that for testing Alarm Relays B and C . However, make
sure that the ohmmeter is connected to the desired normally-open or normally-closed contact of the
currently selected relay. See Figure 4 on page 11 for the correct pin numbers on the option card terminal
block.
4. Pressing [F1] (CLOSE) should yield an ohmmeter reading of about zero. Pressing [F2] (OPEN) should yield an
infinite ohmmeter reading.
5. Press [F3] to EXIT .
6. Repeat the above procedure until both the normally-open and normally-closed contacts for all three alarm
relays have been tested. Then proceed to Procedure Options below.
Procedure Options
You have completed testing the alarm relays. Do one of the following:
• To calibrate/test additional slots, press
[F4] (EXIT)
and proceed to the appropriate section.
• To leave the Calibration Menu, press
[F4] (EXIT)
twice.