EX622 Datasheet, PDF (5/15 Pages) Extech Instruments Corporation. – 400Amp True RMS AC Clamp Meter with IR Thermometer

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.
Input Shutter
The Input Shutter inhibits simultaneous connection to the thermocouple jacks and the
DMM input jacks. This is a safety feature which prevents a potentially hazardous condition
from existing during high voltage measurements. Slide the shutter up for test lead
measurements or slide it down for thermocouple temperature measurements.
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.
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EX622 V2.2 07/08