MA640-en-GB_V2.4 5/15
5
Operation
NOTES
: Read and understand all
Warning
and
Caution
statements in this operation manual prior
to using this meter. Set the function select switch to the OFF position when the meter is not in use.
Non-Contact Voltage Detector
WARNING:
Risk of Electrocution. Before use, always test the Voltage Detector on a known live
circuit to verify proper operation
.
1.
Rotate the Function switch to any measurement position.
2.
Place the detector probe tip on the conductor to be tested.
3.
If AC voltage is present, the NCV detector light will turn on
with a steady red light.
NOTE
: The conductors in electrical cord sets are often twisted. For
best results, move the probe tip along a length of the cord
to assure placing the tip in close proximity to the live
conductor.
NOTE
: The detector is designed with high sensitivity. Static electricity or other sources of energy
may randomly trip the sensor. This is normal operation.
AC/DC Current Measurements
WARNING:
Disconnect the test leads before making clamp measurements.
1. Rotate the Function switch to the
600A
AC or
DC position
2. Press the trigger to open jaw. Fully enclose
only one conductor.
3. Read the current value in the display.
4. If the value is less than 60A, rotate the function
switch to the
60A
position to improve
resolution.
DCA Zero
The REL feature removes offset values and
improves accuracy for DC current
measurements. To perform a zero, select ADC
and, with no conductor in the jaw, press and the
REL button. The display will zero. The offset value is now stored and removed from all
measurements.
