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IMPORTANT SAFETY INSTRUCTIONS
WARNING READ ALL SAFETY WARNINGS AND INSTRUCTIONS.
Failure to follow the warnings and instructions may result in electric shock, fi re and/or serious
injury, as well as instrument damage and/or damage to the equipment being tested.
Save these instructions - This operator’s manual contains important safety and operating
instructions for the MILWAUKEE Clamp Meters. Before using, read this operator’s manual,
your battery pack and charger operator’s manual, and all labels on the battery pack, charger
and Clamp Meters.
DANGER
Never make measurement on a circuit in which voltage over 1000V exists. Use only leads
rated 1000V or better.
Do not attempt to make measurement in the presence of fl ammable gasses. Otherwise, the
use of the instrument may cause sparking, which can lead to an explosion.
Transformer jaw tips are designed not to short the circuit under test. If equipment under test
has exposed conductive parts, however, extra precaution should be taken to minimize the
possibility of shorting.
Never attempt to use the instrument if its surface or your hand is wet.
Do not exceed the maximum allowable input of any measuring range.
Only test on unenergized circuits unless absolutely necessary.
Check tool functionality on a known circuit fi rst. Never assume tool is working. Assume circuits
are live until they can be proven de-energized.
Do not ground yourself while measuring. Avoid body contact with earthed or grounded sur-
faces such as pipes, radiators, ranges and refrigerators.
Never remove the battery pack during a measurement.
This instrument is to be used only in its intended applications or conditions. Otherwise, the
instrument's safety functions may not work, resulting in serious personal injury and instru-
ment damage.
To reduce the risk of injury from shock and arc blasts, always wear personal protective
equipment where live conductors are exposed.
WARNING
Never attempt to make measurement if any abnormal conditions, such as broken case and
exposed metal parts are found on the instrument.
Do not rotate the Rotary Dial while the test leads are being connected.
Verify proper operation on a known source before use or taking action as a result of the indica-
tion of the instrument.
Do not install substitute parts or make any modifi cation to the instrument. For repair or re-
calibration, return the tool to a factory Service/Sales Support Branch or authorized service
station.
Do not try to replace the battery pack if the surface of the instrument is wet.
Disconnect all the cords and cables from the object under test and power off the instrument
before removing or inserting the battery pack.
Recharge only with the charger specifi ed by the manufacturer. A charger that is suitable for one
type of battery pack may create a risk of fi re when used with another battery pack.
Use the meter only with specifi cally designated battery packs. Use of any other battery packs
may create a risk of injury and fi re.
When battery pack is not in use, keep it away from other metal objects like paper clips, coins,
keys, nails, screws, or other small metal objects that can make a connection from one terminal
to another. Shorting the battery terminals together may cause burns or a fi re.
Under abusive conditions, liquid may be ejected from the battery, avoid contact. If contact
accidentally occurs, fl ush with water. If liquid contacts eyes, additionally seek medical help.
Liquid ejected from the battery may cause irritation or burns.
CAUTION
Set the Rotary Dial to an appropriate position before starting measurement.
Firmly insert the test leads.
Disconnect the test leads from the instrument for current measurement.
Do not expose the instrument to the direct sun, high temperature and humidity or dew fall.
Altitude 2000m or less. Appropriate operating temperature is within -10ºC and 50ºC.
This instrument isn’t dust & water proofed. Keep away from dust and water.
Be sure to power off the instrument after use. When the instrument will not be in use for a long
period, place it in storage after removing the battery pack.
Use a damp cloth or neutral detergent for cleaning the instrument. Do not use abrasives or
solvents.
Functions
Dial Position Range Resolution Accuracy
Current AC
2238-20: 60/600 A 0.01/0.1 A
±1.9%rdg ±5dgts, 50Hz/60Hz
±3.0%rdg ±5dgts, 45Hz to 500Hz
* Add 2% at CF>2
2239-20: 60/600/1000 A 0.01/0.1/1 A
Current DC 2239-20: 60/600/1000 A 0.01/0.1/1 A ±2%rdg±5dgt
Voltage AC
600 V 0.1 V
±1.2%rdg ±5dgts, 50Hz/60Hz
±1.8%rdg ±5dgts, 45Hz to 500Hz
1000 V 1 V
Voltage DC
600 V 0.1 V
±1%rdg±2dgt
1000 V 1 V
Resistance 600 /6000 /60 k/600 k 0.1 /1 /10 /0.1 k ±1%rdg±2dgt
Continuity 600.0 0.1 Buzzer sounds at 30 or less
Capacitance 400F/4000F 0.1F/1F
±2.5%±20dgt
up to 60F
uA DC 2238-20: 600.0 uA 0.1uA ±1.5%rdg±5dgt
Temperature
2238-20: -40°C - 538°C 0.1°C ±1%±10dgt
2238-20: -40°F - 1000°F 0.1°F ±1%±18dgt
Hz
Hz Hertz
2239-20:
ACA: 600 Hz, 6 kHz
0.1 Hz, 1Hz
±1%rdg±1dgt
Sensitivity: Amps 5A RMS;
Volts - 30V RMS
Minimum Herts measurement is 10Hz
2239-20:
ACV: 600 Hz, 6 kHz, 60 kHz
0.1 Hz, 1 Hz, 10 Hz
These instruments are True-RMS sensing. All voltage and current readings are True-RMS values.•
Input impedance: •
Voltage DC: 1MΩ
Voltage AC: 1MΩ
Overload protection: •
Voltage AC / Voltage DC range: 1200V AC RMS
Clamp current range: •
720A AC RMS / DC 10sec (Cat. No. 2238-20 only)
1200A AC RMS / DC 10sec (Cat. No. 2239-20 only)
Inrush (Cat. No. 2239-20 only): integration time less than or equal to 100ms•