RIDGID Micro CM-100 User manual
micro CM-100 Digital Clamp Meter
ii
Table of Contents
Recording Form for Machine Serial Number .........................................................1
Safety Symbols .........................................................................................................2
General Safety Rules
Work Area Safety....................................................................................................2
Electrical Safety ......................................................................................................2
Personal Safety.......................................................................................................2
Equipment Use and Care........................................................................................3
Service ....................................................................................................................3
Specific Safety Information
Digital Clamp Meter Safety .....................................................................................3
Description, Specifications and Standard Equipment
Description ..............................................................................................................4
Specifications..........................................................................................................4
Standard Equipment ...............................................................................................6
Controls...................................................................................................................7
Icons .......................................................................................................................7
FCC Statement ..........................................................................................................8
Electromagnetic Compatibility (EMC).....................................................................8
Changing/Installing Batteries ..................................................................................8
Pre-Operation Inspection.........................................................................................9
Set-Up and Operation
Rotary Function Switch.........................................................................................10
Input Terminals......................................................................................................11
Pushbuttons ..........................................................................................................11
DC/AC Voltage Measurement ...............................................................................12
DC/AC Current Measurement...............................................................................12
Resistance Measurement .....................................................................................12
Diode Test .............................................................................................................13
Continuity Check...................................................................................................13
Capacitance Measurement...................................................................................13
Frequency Measurement ......................................................................................14
Temperature Measurement...................................................................................14
Maintenance Instructions
Cleaning................................................................................................................15
Calibration.............................................................................................................15
Accessories.............................................................................................................15
Storage ....................................................................................................................15
Service and Repair .................................................................................................15
Disposal...................................................................................................................16
Battery Disposal .....................................................................................................16
Troubleshooting......................................................................................................16
Lifetime Warranty .....................................................................................Back Cover
Original instructions
micro CM-100
Digital Clamp Meter
micro CM-100
micro CM-100 Digital Clamp Meter
Record Serial Number below and retain product serial number which is
located on nameplate.
Serial
No.
WARNING
Read this Operator’s Manual
carefully before using this tool.
Failure to understand and follow
the contents of this manual may
result in electrical shock, fire
and/or serious personal injury.
micro CM-100 Digital Clamp Meter
2
General Safety Rules
WARNING
Read all safety warnings and instructions. Failure to follow the warnings and in-
structions may result in electric shock, fire and/or serious injury.
SAVE THESE INSTRUCTIONS!
Work Area Safety
•Keep your work area clean and well lit. Cluttered or dark areas invite accidents.
•Do not operate equipment in explosive atmospheres, such as in the presence
of flammable liquids, gases or dust. Equipment can create sparks which may ignite
the dust or fumes.
•Keep children and by-standers away while operating equipment. Distractions can
cause you to lose control.
Electrical Safety
•Avoid body contact with earthed or grounded surfaces such as pipes, radiators,
ranges and refrigerators. There is an increased risk of electrical shock if your body
is earthed or grounded.
•Do not expose equipment to rain or wet conditions. Water entering equipment will
increase the risk of electrical shock.
Personal Safety
•Stay alert, watch what you are doing and use common sense when operating
equipment. Do not use equipment while you are tired or under the influence of
drugs, alcohol or medication. A moment of inattention while operating equipment
may result in serious personal injury.
Safety Symbols
In this operator’s manual and on the product, safety symbols and signal words are used
to communicate important safety information. This section is provided to improve un-
derstanding of these signal words and symbols.
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible injury
or death.
DANGER indicates a hazardous situation which, if not avoided, will re-
sult in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION indicates a hazardous situation which, if not avoided, could
result in minor or moderate injury.
NOTICE indicates information that relates to the protection of property.
This symbol means read the operator’s manual carefully before using the equip-
ment. The operator’s manual contains important information on the safe and
proper operation of the equipment.
NOTICE
DANGER
WARNING
CAUTION
This symbol indicates the risk of electrical shock.
This symbol indicates the presence of a high voltage hazard.
micro CM-100 Digital Clamp Meter
3
•Use personal protective equipment. Always wear eye protection. Protective equip-
ment such as as protective gloves and clothing, dust mask, non-skid safety shoes, hard
hat, or hearing protection used for appropriate conditions will reduce personal injuries.
•Do not overreach. Keep proper footing and balance at all times. This enables bet-
ter control of the equipment in unexpected situations.
Equipment Use and Care
•Do not force equipment. Use the correct equipment for your application. The
correct equipment will do the job better and safer at the rate for which it is designed.
•Do not use equipment if the switch does not turn it ON and OFF. Any tool that can-
not be controlled with the switch is dangerous and must be repaired.
•Store idle equipment out of the reach of children and do not allow persons un-
familiar with the equipment or these instructions to operate the equipment.
Equipment can be dangerous in the hands of untrained users.
•Maintain equipment. Check for missing parts, breakage of parts and any other con-
dition that may affect the equipment’s operation. If damaged, have the equipment re-
paired before use. Many accidents are caused by poorly maintained equipment.
•Use the equipment and accessories in accordance with these instructions, tak-
ing into account the working conditions and the work to be performed. Use of
the equipment for operations different from those intended could result in a hazardous
situation.
•Use only accessories that are recommended by the manufacturer for your
equipment. Accessories that may be suitable for one piece of equipment may be-
come hazardous when used with other equipment.
•Keep handles dry and clean; free from oil and grease. Allows for better control of
the equipment.
Service
•Have your equipment serviced by a qualified repair person using only identical
replacement parts. This will ensure that the safety of the tool is maintained.
Specific Safety Information
WARNING
This section contains important safety information that is specific to this tool.
Read these precautions carefully before using the RIDGID®micro CM-100 Digital
Clamp Meter to reduce the risk of electrical shock or other serious injury.
SAVE THESE INSTRUCTIONS!
Keep this manual with the tool for use by the operator.
Digital Clamp Meter Safety
•Use caution when working with voltages above 30 V AC RMS, 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 working alone.
•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-
micro CM-100 Digital Clamp Meter
4
posed metal pipes, outlets, fixtures, etc., which might be at ground potential. Keep your
body isolated from ground using appropriate methods.
•Disconnect the test leads from the meter before making current clamp meas-
urements. This reduces the risk of electric shock.
•When measuring resistance, disconnect all power (remove batteries, unplug
cord, discharge all capacitors, etc.) to the circuit being measured. This reduces
the risk of electric shock.
•After resistance test, the capacitive circuits must be discharged. This will help
protect against electric shock.
•Use extreme caution when working near bare conductors and bus bars. Acci-
dental contact with conductors could result in electrical shock.
•Turn OFF power to the circuit under test before cutting, unsoldering, or break-
ing the circuit. Small amount of current can expose the operator to a shock hazard.
The EC Declaration of Conformity (890-011-320.10) will accompany this manual as a
separate booklet when required.
If you have any question concerning this RIDGID®product:
• Contact your local RIDGID distributor.
• Visit www.RIDGID.com or www.RIDGID.eu to find your local RIDGID contact point.
in the U.S. and Canada call (800) 519-3456.
Description, Specifications And Standard Equipment
Description
The RIDGID® micro CM-100 Digital Clamp Meter is a handheld digital instrument with
clamp-on current measuring capability. The unit can measure DC and AC Voltage and
Current, Resistance, Capacitance, Frequency, Temperature, Continuity (audible signal)
and Test Diodes.
The unit has data hold, peak hold and DC Amps zero adjustment functions. Overload
protection and low battery indication are provided in the unit. The unit has a four Digit
backlight LCD.
The Clamp Meter is powered by a 9V battery and has auto power-off function after 20 min-
utes of inactivity.
Specifications
Display ..........................................4-Digit backlight LCD
Clamp Size ...................................1.2" (30 mm) Opening
Overvoltage Category...................CAT III 600 V, CAT II 1000 V
Safety Compliance........................IEC 61010-1, EN 61010-1
Measurement Rate .......................2 per Second, Nominal
Power Supply..................................9V Battery, NEDA 1604, IEC 6F22 or 6LR61
Operating Temperature...................0°C to 50°C (32°F to 122°F)
Weight...........................................0.67 lbs (304 g)
Dimension.....................................9.0" x 3.1" x 1.9" (229 x 79 x 48 mm)
micro CM-100 Digital Clamp Meter
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Input Limits
Accuracy is given at 18°C to 28°C (65°F to 83°F), less than 70% RH
DC Current
AC Current
DC Voltage (Autoranging)
Input Impedance...........................10.0 MΩ
AC Voltage (Autoranging)
Input Impedance...........................10.0 MΩ
Resistance (Autoranging)
Function Maximum Input
Voltage V DC/AC 600 V DC/AC
Current A DC/AC 1000 A DC/AC
Frequency, Duty Cycle 600 V DC/AC
Range Resolution Accuracy
400 mV 0.1 mV ±0.8% of Reading ± 2 Digits
4 V 0.001 V
40 V 0.01 V ±1.5% of Reading ± 2 Digits
400 V 0.1 V
600 V 1 V ±2.0% of Reading ± 2 Digits
Range Resolution Accuracy
400 mV 0.1 mV ±1.0% of Reading ± 10 Digits
4 V 0.001 V
40 V 0.01 V ±1.5% of Reading ± 8 Digits
400 V 0.1 V
600 V 1 V ±2.0% of Reading ± 8 Digits
Range Resolution Accuracy
40 A 0.01 A ±2.8% of Reading ± 10 Digits
400 A 0.1 A ±2.8% of Reading ± 8 Digits
1000 A 1 A ±3.0% of Reading ± 8 Digits
Range Resolution Accuracy
40 A 0.01 A ±2.8% of Reading ± 10 Digits
400 A 0.1 A ±2.8% of Reading ± 8 Digits
1000 A 1 A ±3.0% of Reading ± 8 Digits
Range Resolution Accuracy
400 Ω0.1 Ω±1.0% of Reading ± 4 Digits
4 kΩ1 Ω
40 kΩ10 Ω±1.5% of Reading ± 2 Digits
400 kΩ100 Ω
4 MΩ1 kΩ±2.5% of Reading ± 5 Digits
40 MΩ10 kΩ±3.5% of Reading ± 10 Digits
micro CM-100 Digital Clamp Meter
6
Capacitance (Autoranging)
Frequency (Autoranging)
Sensitivity......................................>5 V RMS minimum
Temperature
Diode Test
Open Circuit Voltage .....................1.5 V DC
Audible Continuity
Audible Threshold .........................< 35 Ω
Test Current ..................................< 1.0 mA
Standard Equipment
The RIDGID®micro CM-100 Digital Clamp Meter comes with the following items:
• micro CM-100 Digital Clamp Meter
• Test Leads with Covers, Black and Red
• K Type Adapter and Temperature Probe
Figure 1 – micro CM-100 Digital Clamp Meter
Figure 2 – Back of micro CM-100 Digital Clamp Meter
Range Resolution Accuracy
4 ηF 0.001 ηF ±5.0% of Reading ± 30 Digits
40 ηF 0.01 ηF ±5.0% of Reading ± 20 Digits
400 ηF 0.1 ηF
4 μF 0.001 μF ±3.0% of Reading ± 5 Digits
40 μF 0.01 μF
400 μF 0.1 μF ±4.0% of Reading ± 10 Digits
4 mF 0.001 mF ±4.5% of Reading ± 10 Digits
40 mF 0.01 mF ±5.0% of Reading ± 10 Digits
Range Resolution Accuracy
4 kHz 0.001 kHz ±1.5% of Reading ± 2 Digits
Range Resolution Accuracy
-40°C to +1000°C 1°C ±2.5% of Reading ± 3°C
-40°F to +1832°F 1°F ±2.5% of Reading ± 5°F
Range Resolution Accuracy
0.3 mA Typical 1 mV ±10% of Reading ± 5 Digits
• User Manual and Instruction CD
• Carrying Case
Warning
Label
micro CM-100 Digital Clamp Meter
7
Controls
Figure 3 – micro CM-100 Digital Clamp Meter Controls
Icons
Screen Icons
Figure 4 – Screen Icons
1. Transformer Jaws
2. Jaw Trigger
3. Rotary Function switch
4. Data hold pushbutton
5. Mode pushbutton
6. Peak hold pushbutton
7. Backlight pushbutton
8. DC amps zero adjustment pushbutton
9. 4-Digit Liquid Crystal Display
10. Positive Input Terminal for DC/AC Voltage Measure-
ment, Resistance Measurement, Continuity Check,
Diode Test, Frequency Measurement, Capacitance
Measurement and Temperature Measurement
11. COM (Negative) Terminal for all measurements ( )
2
1
7
8
3
11
9
5
4
Icon Number Icons on Screen Description
1 AUTO Autoranging.
2 DC Amps Zero Adjustment.
3 DC Direct Current or Voltage.
4 AC Alternating Current or Voltage.
5 Low Battery.
6 — Polarity Indicator.
7 Analog Display of Voltage
8 °C and °F Temperature Mode (Degree Celsius, Degree Fahrenheit).
9 V, mV volts, millivolts
10 A amperes (amps), microamp, milliamp
11 Diode Test Mode.
12 Continuity Check Mode.
13 µF, ηF, F, mF microfarad, nanofarad, farad, millifarad
14 kHz kilohertz
15 Ω, kΩ, MΩohm, kilohm, Megohm
16 P MIN Peak Minimum Value.
17 P MAX Peak Maximum Value.
OL Overload Condition. (Shows in Numeric Display.)
58
13
1
14
15
17
3
4
10
6
12
9
11
16
2
10
67
On Product Icons
This equipment is used to make electrical measurements. Incorrect use or im-
proper application may result in incorrect or inaccurate measurements. Selection of ap-
propriate measurement methods for the conditions is the responsibility of the user.
FCC Statement
This equipment has been tested and found to comply with the limits for a Class B digi-
tal device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation.
This equipment generates, uses, and can radiate radio frequency energy and, if not in-
stalled and used in accordance with the instructions, may cause harmful interference to
radio communications.
However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Consult the dealer or an experienced radio/TV technician for help.
Electromagnetic Compatibility (EMC)
The term electromagnetic compatibility is taken to mean the capability of the product to
function smoothly in an environment where electromagnetic radiation and electrostatic
discharges are present and without causing electromagnetic interference to other equip-
ment.
The RIDGID micro CM-100 Digital Clamp Meter conforms to all applicable
EMC standards. However, the possibility of it causing interference in other devices can-
not be precluded.
Changing/Installing Batteries
The RIDGID micro CM-100 Digital Clamp Meter is supplied without the battery installed.
When the low battery [ ] icon appears on the display screen, replace the battery. Op-
erating the clamp meter with a low battery can cause incorrect readings. Remove the bat-
tery prior to long-term storage to avoid battery leakage.
1. Switch OFF the device and disconnect test leads.
micro CM-100 Digital Clamp Meter
8
Double Insulation Symbol
Earth Ground Symbol 9V Battery Symbol
CAT III IEC Overvoltage Category III CAT II IEC Overvoltage Category II
CAT III equipment is designed to protect CAT II equipment is designed to protect
against transients in equipment in fixed against transients from energy-
equipment installations, such as consuming equipment supplied from
distribution panels, feeders and short the fixed installation, such as TVs, PCs
branch circuits, and lighting systems portable tools, and other household
in large buildings. appliances.
Do not dispose of electrical equipment
Conforms to European Union directives. with household waste!
NOTICE
NOTICE
2. Use a Phillips head screwdriver to
loosen the battery compartment cover
screw and remove the cover. Remove
existing battery.
3. Install 9V alkaline battery (NEDA 1604,
IEC 6F22 or 6LR61), observing the cor-
rect polarity as indicated on the battery
compartment.
4. Securely install the battery compartment
cover.Do not operate without the battery
cover secured.
Pre-Operation Inspection
WARNING
Before each use, inspect your tool and correct any problems to reduce
the risk of serious injury from electric shock and other causes and pre-
vent tool damage.
1. Make sure the unit is OFF and the leads are not connected.
2. Clean any oil, grease or dirt from the equipment.This aids inspection and helps pre-
vent the tool from slipping from your grip.
3. Inspect the tool.
• For any broken, worn, missing or binding parts or any condition which may pre-
vent safe and normal operation.
• Confirm that battery compartment cover and back coverare
PROPerly secured.
• Inspect the test leads for damaged insulation or exposed wire. Check the test
leads for continuity.
• Check that the markings and warning label are present, firmly attached and read-
able.
If any issues are found during the inspection, do not use the tool until it has been
properly serviced.
4. Verify the meter operation (following the
Operating Instructions
)
• Turn the unit ON and confirm that the Low Battery icon is not ON.
• Perform a continuity test.
5. Do not use the meter if it operates abnormally. When in doubt, have the meter serv-
iced.
Set-Up and Operation
WARNING
Set up and operate the micro CM-100 Digital Clamp Meter ac-
cording to these procedures 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,
42 V AC peak or 60 V DC. These voltages pose serious shock hazard. High-voltage cir-
cuits, both DC and AC, are very dangerous and should be measured with great care.
Avoid working alone.
micro CM-100 Digital Clamp Meter
9
Figure 5 – Changing Battery
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
Input Terminals
The black test lead plugs into the negative (COM) terminal and the red test lead plug the
positive terminal.The Transformer Jaw Clamp is used for DC/AC current measurement.
Figure 7 – Input Terminals
Pushbuttons
Mode Button
The Mode Button is used to select Ohms/Diode/Continuity, DC/AC Current and Voltage,
Degrees F/C in the appropriate rotary switch settings.
1. In Current measurement function, pressing the Mode button will select the AC range
from the default DC range.
2. In Voltage/Frequency measurement function, pressing the Mode button once will
select the AC range from the default DC range. If the button is pressed for 3 seconds,
the meter will enter Frequency measurement function.
3. In Resistance/Diode/Continuity function, pressing the Mode button will change from
default Resistance function to Diode test and then Continuity test function.
4. In Temperature measurement function, pressing the Mode button will change from
default °C to °F units.
Peak Hold Button
The Peak Data Hold function records the maximum and minimum readings for current
and voltage on the display.
1. Press the Peak Hold button once to record the peak maximum value. The meter
beeps and indicator “P MAX” appears on the display.
2. Press the Peak Hold button again to record the peak minimum value. The meter
beeps and indicator “P MIN” appears on left-upper corner of the display.
3. Press the Peak Hold button for 3 seconds to deactivate.
Data Hold Button
The Data Hold function allows the meter to freeze a measurement for later reference.
1. Press the Data Hold button to freeze the reading on the DISPLAY. The meter beeps
and indicator “HOLD” appear on the display.
2. Press the Data Hold button to return to normal operation.
DC Zero Button
The DC Zero Button is used in case of DC current measurement to zero the clamp cur-
rent for accurate measurement.
Backlight Button
1. Press the Backlight button for 3 seconds to turn the display light ON.
2. Press Backlight button again for 3 seconds to exit the backlight mode.
micro CM-100 Digital Clamp Meter
11
Terminals Description
V / Input Positive Terminal for Voltage, Resistance,
Ω/ CAP / Continuity Test, Diode Test, Capacitance,
TEMP /Hz Temperature and Frequency Measurement
COM Negative Terminal for all measurements
micro CM-100 Digital Clamp Meter
12
DC/AC Voltage Measurement
Do not measure voltage if motor (or other high current equipment) on the cir-
cuit is being switched ON and OFF. Large voltage surge may occur that can damage the
meter.
1. Set the function switch to position. The meter automatically defaults to DC
Voltage.
2. Press button to select the AC voltage range if desired.
3. Insert black test lead plug into the “COM” terminal and red test lead plug into the “V
ΩCAP TEMP Hz” terminal.
4. Touch the test probe tips to the circuit under test. Be sure to observe the correct po-
larity (red lead to positive, black lead to negative).
The probe tips may not be long enough to contact the live parts inside some fixtures
because the contacts are deeply recessed.The reading may show 0 volts when the
outlet actually has voltage on it. Make sure the probe tips are touching metal con-
tacts before assuming that no voltage is present
5. Read the voltage in the display. The display will indicate the proper value with deci-
mal point and symbol (DC/AC and V). If the polarity is reversed, the display will show
minus (-) before the value.
DC/AC Current Measurement
To reduce risk of electric shock, ensure that the test leads are discon-
nected from the meter before making current measurements.
1. Set the function switch to , or position according to the meas-
urement range.The meter automatically defaults to DC current.
2. Press button to select the AC current range from default DC mode.
3. In DC mode, press the button
once, the Δsymbol will appear indi-
cating the display is zero.
4. Press the trigger to open up the trans-
former jaws and clamp around the
single conductor that needs to be
tested.
5. Read the display. The display will in-
dicate the proper value with decimal
point and symbol.
NOTE! During measurement, keep the
jaws fully closed for accurate meas-
urement. When measuring large
currents, the jaws may buzz.This is
not a fault and does not affect the
accuracy.
Resistance Measurement
To reduce risk of electric shock, disconnect all power (remove batteries,
unplug cord, discharge all capacitors, etc.) to the circuit being measured before taking any
resistance measurement.
NOTICE
WARNING
Correct Current
Measurement
Incorrect Current
Measurement
Figure 8 – Correct Way of Current Measurement
WARNING
micro CM-100 Digital Clamp Meter
13
1. Set the function switch to position.
2. Insert the black test lead plug into the “COM” terminal and the red test lead plug into
the “V ΩCAP TEMP Hz” terminal.
3. Touch the test probe tips across the circuit or part under test. It is good practice to
disconnect one side of the part under test so the rest of the circuit will not interfere
with the resistance reading.
4. Read the resistance in the display. The display will indicate the proper value with
decimal point and symbol.
5. After resistance test, the capacitive circuits must be discharged. This will help pro-
tect against electric shock.
Diode Test
To reduce the risk of electric shock, do not test any diode that has volt-
age on it.
1. Set the function switch to position.
2. The meter automatically defaults to Resistance range. Press button once to
select the diode test range.
3. Insert the black test lead plug into the “COM” terminal and the red test lead plug into
the the “V ΩCAP TEMP Hz” terminal.
4. Touch the test probe tips to the diode or semiconductor junction to test. Note the
meter reading.
5. Reverse the probe polarity by switching probe position. Note this reading.
6. The diode or junction can be evaluated as follows:
• If one reading shows a value and the other reading shows OL, the diode is good.
• If both readings show OL, the device is open.
• If both readings are very small or 0, the device is shorted.
NOTE! The value indicated in the display during the diode check is the forward voltage.
Continuity Check
To reduce risk of electric shock, never measure continuity on circuits or
wires that have voltage on them.
1. Set the function switch to position.
2. The meter automatically defaults to Resistance range. Press button twice to
select the continuity test range.
3. Insert black test lead plug into the “COM” terminal and red test lead plug into the “V
ΩCAP TEMP Hz” terminal.
4. Check meter operation by touching probe tips together. An audible signal should
sound.
5. Touch the test probe tips to the circuit or wire to check.
6. If the resistance is less than approximately 35 Ω, an audible signal will sound. The
display will also show the actual resistance.
Capacitance Measurement
To reduce risk of electric shock, disconnect all power (remove batteries,
WARNING
WARNING
WARNING
micro CM-100 Digital Clamp Meter
14
unplug cord, discharge all capacitors, etc.) to the circuit being measured before taking any
capacitance measurement. Use the DC Voltage function to confirm that the capacitor is dis-
charged.
1. Set the function switch to position.
2. Insert the black test lead plug into the “COM” terminal and the red test lead plug into
the “V ΩCAP TEMP Hz” terminal.
3. Touch the test leads to the capacitor to be tested. The display will indicate the proper
value with decimal point and symbol.
Frequency Measurement
1. Set the function switch to position.
2. The meter automatically defaults to DC voltage. Press and hold button for 3
seconds to select the frequency range.
3. Insert black test lead plug into the “COM” terminal and red test lead plug into the “V
ΩCAP TEMP Hz” terminal.
4. Touch the test probe tips to the circuit under test.
5. Read the frequency in the display. The digital reading will indicate the proper value
with decimal point and symbol.
Temperature Measurement
To reduce the risk of electric shock, disconnect both test probes from any
source of voltage before making a temperature measurement.
1. Set the function switch to position. The meter automatically defaults to °C
range.
2. Insert the temperature adapter in “COM” and “V ΩCAP TEMP Hz” terminal with
–ve side in “COM” and +ve side in “V ΩCAP
TEMP Hz” terminal.
3. Insert the Temperature Probe into the adapter.
4. Touch the Temperature Probe head to the part
whose temperature is to be measured. Keep the
probe in contact with the part under test until the
reading stabilizes (about 30 seconds).
5. Read the temperature in the display. The digital
reading will indicate the proper value with deci-
mal point.
6. Press button to change from °C to °F unit.
To reduce risk of electric shock, be
sure the thermocouple has been removed before changing to another measurement func-
tion.
Maintenance Instructions
WARNING
To reduce risk of electric shock, disconnect the test leads from any source of
voltage before performing any maintenance activity.
WARNING
Figure 9 – Temperature Probe
WARNING
micro CM-100 Digital Clamp Meter
15
Cleaning
• Do not immerse the clamp meter in water.Wipe off dirt with a damp soft cloth. Do not
use aggressive cleaning agents or solutions. Gently clean the display screen with a
clean dry cloth. Avoid rubbing too hard.
• Use only alcohol swabs to clean the test lead connections.
Calibration
The calibration of the meter should be checked once a year to ensure that it performs
according to the specifications.Take to a RIDGID Service Center for calibration check.
Accessories
WARNING
To reduce the risk of serious injury, only use accessories specifically designed and
recommended for use with the RIDGID micro CM-100 Digital Clamp Meter such as
those listed below. Other Accessories suitable for use with other tools may be
hazardous when used with this meter.
Further information on accessories specific to this tool can be found in the RIDGID Cat-
alog and online at www.RIDGID.com or www.RIDGID.eu
Storage
The RIDGID micro CM-100 Digital Clamp Meter must be stored in a dry secure area be-
tween -30°C (-22°F) and 60°C (140°F) and humidity less than 85% RH.
Store the tool in a locked area out of the reach of children and people unfamiliar with the
meter.
Remove the battery before any long period of storage or shipping to avoid battery leakage.
The clamp meter should be protected against hard impacts, moisture and humidity, dust
and dirt, extreme high and low temperatures and chemical solutions and vapors.
Service and Repair
WARNING
Improper service or repair (or calibration) can make the micro CM-100 Digital
Clamp Meter unsafe to operate.
Service and repair of the micro CM-100 Digital Clamp Meter must be performed by a
RIDGID Independent Authorized Service Center.
For information on your nearest RIDGID Independent Service Center or any service or
repair questions:
• Contact your local RIDGID distributor.
• Visit www.RIDGID.com or www.RIDGID.eu to find your local RIDGID contact point.
in the U.S. and Canada call (800) 519-3456.
Catalog Number Description
44748 Test Leads with Covers, Black and Red
44758 K Type Adapter and Temperature Probe
micro CM-100 Digital Clamp Meter
16
Disposal
Parts of the RIDGID micro CM-100 Digital Clamp Meter contain valuable materials and
can be recycled. There are companies that specialize in recycling that may be found lo-
cally. Dispose of the components in compliance with all applicable regulations. Contact
your local waste management authority for more information.
For EC Countries: Do not dispose of electrical equipment with household
waste!
According to the European Guideline 2002/96/EC for Waste Electrical and Elec-
tronic Equipment and its implementation into national legislation, electrical
equipment that is no longer usable must be collected separately and disposed
of in an environmentally correct manner.
Battery Disposal
For EC countries: Defective or used batteries must be recycled according to the guide-
line 2006/66/EEC.
Meter does not work
properly.
Unit will not turn ON.
Battery low on power.
Meter needs calibration.
Meter not set for proper measure-
ment.
Use of incorrect input terminal,
range or mode for measurement.
Dead battery.
Replace battery.
Send the unit for calibration to
the RIDGID Independent Author-
ized Service Center.
Move the Rotary Function Switch
according to the correct meas-
urement.
Use proper input terminal, range
or mode for measurement. See
Tool Set-up and Operating In-
structions
.
Replace battery.
SYMPTOM POSSIBLE REASON SOLUTION
Troubleshooting
Multimètre numérique à
pinces micro CM-100
micro CM-100
Multimètre numérique à pinces micro CM-100
Notez ci-dessous et conservez le numéro de série indiqué sur la plaque
signalétique de l’appareil.
Nº de
série
AVERTISSEMENT
Familiarisez-vous avec cette notice
avant d’utiliser l’appareil. Tout man-
que de compréhension ou de respect
des consignes ci-présentes augmen-
terait les risques de choc électrique,
d’incendie et/ou de grave blessure
corporelle.
Multimètre numérique à pinces micro CM-100
18
Table des matières
Fiche d’enregistrement du numéro de série de l’appareil..................................17
Symboles de sécurité ............................................................................................19
Consignes générales de sécurité
Sécurité du chantier .............................................................................................19
Sécurité électrique................................................................................................19
Sécurité individuelle..............................................................................................20
Utilisation et entretien du matériel ........................................................................20
Service après-vente..............................................................................................20
Consignes de sécurité spécifiques
Sécurité du multimètre numérique à pinces .........................................................21
Description, fiche technique et équipements de base
Description............................................................................................................21
Fiche technique ....................................................................................................22
Equipements de base...........................................................................................23
Commandes .........................................................................................................24
Icônes ...................................................................................................................25
Déclaration FCC .....................................................................................................26
Compatibilité électromagnétique (EMC) ..............................................................26
Installation et remplacement des piles ................................................................26
Inspection préalable...............................................................................................27
Préparation et utilisation de l’appareil
Sélecteur de fonction............................................................................................28
Prises de sonde....................................................................................................29
Touches ................................................................................................................29
Mesure de tension CC/CA....................................................................................30
Mesure de courant continue/alternatif (CC/CA)....................................................30
Mesure de résistance ...........................................................................................31
Contrôle de diode .................................................................................................31
Contrôle de continuité...........................................................................................32
Mesure de capacitance ........................................................................................32
Mesure de fréquence............................................................................................32
Mesure de température ........................................................................................33
Consignes d’entretien
Nettoyage .............................................................................................................34
Calibrage ..............................................................................................................34
Accessoires ............................................................................................................34
Stockage .................................................................................................................35
Révisions et réparations........................................................................................35
Recyclage................................................................................................................35
Recyclage des piles ...............................................................................................35
Dépannage ..............................................................................................................36
Garantie à vie ......................................................................................Page de garde
*Traduction de la notice originale
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