Set-Up And Operation - RIDGID micro DM-100 Manual

Set-Up and Operation

42 V AC peak or 60 V DC. These voltages pose serious shock hazard. High-voltage circuits,
both DC and AC, are very dangerous and should be measured with great care. Avoid work-
ing alone.
Do not connect to voltages that exceed 1000 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 exposed
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. Accidental
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.
• When measuring current, turn off circuit power before connecting the meter in the
circuit. Remember to place the meter in series with the circuit.
• 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). Cover unused input termi-
nals with terminal plugs.
6. If "OL" appears in the display during a measurement, the value exceeds the range you
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micro DM-100 Digital Multimeter
Set up and operate the Multimeter according to these proce-
dures to reduce the risk of injury from electric shock and other
causes, and prevent tool damage.
Use caution when working with voltages above 30 V AC RMS,
WARNING