Ac Current Clamp Measurements; Polarity Considerations; Peak Max And Peak Min - Extech Instruments EX820A User Manual

1000 a ac true rms clamp meter with ir thermometer

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Operation

5.5 AC Current Clamp Measurements

WARNING

Disconnect the test leads before making clamp measurements.

Figure 5.1 AC current clamp measurements. Clamp only one conductor, as shown.

1. Rotate the function switch to the A position.

2. Press the trigger to open jaw. Fully enclose only one conductor as shown

in Figure 5.1.

3. Read the current value on the display.

When measuring from front to back on the EX820A, a minus (-) sign will pre-

cede the displayed reading. When measuring from back to front, a positive (+)

sign will precede the displayed reading.

When measuring AC current, press the PEAK button to activate the peak cap-

ture circuit. The display icon

will appear and the display will show the

#NAS100175; r. AA/97099/97616; en-US

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