RIDGID Micro CM-100, Original Instructions Manual

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micro CM-100 Digital Clamp Meter
10
Do not connect to voltages that exceed 600 VAC or VDC relative to earth ground.
This may damage the meter and expose the operator to a shock hazard.
When using the probes, keep your fingers behind the finger guards on the
probes.
This reduces the risk of electric shock.
Never ground yourself when taking electrical measurements. Do not touch ex-
posed metal pipes, outlets, fixtures, etc., which might be at ground potential. Keep your
body isolated from ground using appropriate methods.
Use extreme caution when working near bare conductors and bus bars. Acci-
dental contact with conductors could result in electrical shock.
1. Check for an appropriate work area as indicated in the General Safety section.
2. Inspect the work to be done and confirm that you have correct equipment for the ap-
plication. See the Specifications section for range, accuracy and other information.
• To select a function, turn the rotary function switch to the appropriate position.
• Select the proper function and range for your measurement.
• Determine the voltage to be measured. Do not apply more than the rated voltage,
as marked on the meter, between terminals or between any terminal and earth
ground.
• Check the clamps for full closure. Do not use the meter if the clamps do not op-
erate properly.
• Turn the function switch to the OFF position after inspection.
3. Make sure all equipment being used has been properly inspected.
4. Use correct accessories for the application. Select the proper terminals, function,
and range for all measurements.
5. When making electrical connections, connect the common test lead (black) before
connecting the live test lead (red); when disconnecting, disconnect the live test lead
(red) before disconnecting the common test lead (black).
6. If “OL” appears in the display during a measurement, the value exceeds the range
you have selected, change to a higher range. On some low DC and AC voltage
ranges, with the test leads not connected to a device, the display may show a ran-
dom, changing reading. This is normal and is caused by the high-input sensitivity. The
reading will stabilize and give a proper measurement when connected to the circuit.
7. Always turn the function switch to the OFF position when the meter is not in use. The
meter will automatically shut OFF if not used for 20 minutes.
Rotary Function Switch
The Rotary Function switch permits the user to select a measurement function by posi-
tioning the rotary switch to one of the icons around its perimeter.
Figure 6 – Rotary Function Switch
Switch Position Function
DC/AC Current Measurement up to 1000 A
DC/AC Current Measurement up to 400 A
DC/AC Current Measurement up to 40 A
Continuity/Diode Test & Resistance Measurement
Voltage and Frequency Measurement
Capacitance Measurement
Temperature Measurement in °C or °F
Switch OFF the Clamp Meter