11
W
Caution
During current measurement keep the jaws away from other current-
carrying devices such as transformers, motors or energized wires, as they
may negatively influence accuracy of the measurement.
Microamps μA Measurement
The μA DC (
) function on the Meter is primarily for HVAC flame sensor
testing. To test a heating system flame sensor:
1. Turn the heating unit off and locate the wire
between the gas-burner controller and the flame
sensor.
2. Disconnect one of the flame sensor wires.
3. Turn the rotary switch on the Meter to
.
4. Connect the black test lead to the COM terminal and
the red test lead to the μA terminal.
5. Using alligator clips, connect a meter in series by
attaching one alligator clip to the disconnected flame
sensor probe and the second one to the disconnected
control-module terminal.
6. Turn heating unit on and check the reading on the
Meter.
7. Refer to the heating unit documentation for what
the correct reading should be.
Summary of Contents for AMP-210
Page 2: ......
