EX622 Datasheet, PDF (6/15 Pages) Extech Instruments Corporation. – 400Amp True RMS AC Clamp Meter with IR Thermometer

AC Current Measurements
WARNING: Disconnect the test leads before making clamp measurements.
1. Rotate the Function switch to the
400AAC 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 40A, rotate
the function switch to the 40AAC
position to improve resolution.
Frequency
When ACV is selected, the measured freq
uency can be viewed in the lower di
splay.
AC/DC Voltage Measurements
CAUTION: Do not measure voltages if a motor on the circuit is being switched ON or
OFF. Large voltage surges may occur that can damage the meter.
1. Slide the input shutter to the up position.
2. Rotate the function switch to the V position.
3. Press the MODE button to select AC or DC Voltage.
4. Insert the black test lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive V jack.
5. Touch the black test probe tip to the negative side of the circuit.
Touch the red test probe tip to the positive side of the circuit.
6. Read the voltage value in the display.
Frequency
When ACA is selected, the measured frequency can be viewed in the
lower display.
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EX622 V2.2 07/08