Extech Instruments UM200-NIST User Manual page 7

Resistance measurements with the
1. Connect the test leads to the meter.
2. Turn the switch to a proper measurement range. Five dash lines (-----) will be shown in LCD.
3. Zero the range before making measurements. Connect the Kelvin clips together and press
the START / STOP button then press the Zero button. The reading should read zero Ohms.
4. Connect the test leads to the device under test.
5. The LCD will continuously display the value of the resistance. Both resistive and inductive
materials can be measured.
6. If you need to change ranges, Zero the range before making a measurement.
7. To stop the measurement, press the START/STOP button again. The H hold symbol will be
shown in LCD and the final result will remain in the display.
Resistance measurements with the
Resistive Materials:
1. Connect the test leads to the meter.
2. Turn the switch to a proper measurement range. Five dash lines (-----) will be shown in LCD.
The
3. Zero the range before making measurements. Connect the Kelvin clips together and press
the START / STOP button then press the ZERO button. The reading should read zero
Ohms.
4. Connect the test leads to the device under test.
5. The LCD will continuously display the value of the resistance. Only resistive materials can
be measured.
6. If you need to change ranges, Zero the range before making a measurement.
7. To stop the measurement, press the START/STOP button again. The H hold symbol will be
shown in LCD and the final result will remain in the display.
Inductive and Resistive Materials:
1. If inductive material is to be measured (such as coil of motor or a transformer),
2. Press the
can be measured.
3. Zero the range before making measurements. Connect the Kelvin clips together and press
the START / STOP button then press the ZERO button. The reading should read zero
Ohms.
4. When a stable reading is obtained the measurement will automatically stop, the H hold
symbol will be shown in LCD and the final result will remain in the display.
Manual Range (Sub-Ranges)
There are three overlapping sub-ranges in each of the six rotary switch ranges. Each sub-range
can be selected by pressing the RANGE button. Refer to the specifications for a list of the sub-
ranges. The OL symbol will be shown in the LCD if the value of resistance is out of sub-range.
The resolution remains the same for the three sub-ranges. In the manual range, the AUTO
symbol will disappear.
LED is off. The measurement is for resistive material only.
button to turn on the
LED ON (6, 60, 600 and 6000Ω ranges)
LED OFF (600, 60mΩ ranges)
LED. Both resistive and inductive materials
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