Autoranging Datalogging Insulation Tester (Megohmmeter) User’s Manual
The 380366 measures insulation resistance to 4000MΩ and includes Continuity and Voltage tests. The built-in datalogger remotely stores approx. 16,000 readings for later transfer to a PC. The tester can also take and record readings to a PC in real time. This professional tester, with proper care, will provide years of safe reliable service.
Connecting Test Leads
For all functions (Megohmmeter, Resistance, Continuity and AC Voltage), connect the red test lead to the HI terminal and the black lead to the LO terminal.
Test Lead Check
1. Connect the red test lead to the HI input terminal; black lead to the LO terminal.
2. Set the rotary switch to the resistance/ continuity position (Ω)
3. Touch the test lead tips together. Resistance should be less than 1Ω and the audio tone should sound.
4. With the leads not touching, the display should read “-OL-“. (over range).
5. If any readings are displayed other than the readings just described, the test leads should be considered faulty and must be replaced before using the meter. Failure to do so could result in damage to equipment and electrical shock.
Insulation Resistance Measurements (Megohmmeter Tests)
1. Connect the red test lead to the HI input terminal; black lead to the LO terminal.
2. Set the rotary switch to the desired function.
3. Connect the tips of the test leads to the equipment under test.
4. Press and hold down the red TEST button. Release the test button to stop the test. The meter will then hold the resistance reading. This is indicated by the H icon in the upper left corner of the display.
5. To clear the display, press the LOCK/HOLD button twice. Note that the charge stored on the device under test will be automatically discharged when the testing process is finished 3-Minute Test
For hands-free operation, use the Test Lock feature.
1. Connect the red test lead to the HI input terminal; black lead to the LO terminal
2. Set the rotary switch to the desired function.
3. Connect the tips of the test leads to the equipment under test.
4. Press the LOCK button. The LOCK icon will be displayed. Press the red TEST button. A 3-minute continuous test will begin. The red TEST button can be pressed at any time to end the test. If the TEST button is not pressed the meter automatically stops the test after 3 minutes. The meter will then hold the resistance reading. This is indicated by the H icon in the upper left corner of the display.
5. To clear the display, press the LOCK/HOLD button twice.
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