CMT01
Clamp-on Digital Multimeter
600.103UK
Introduction
This handy multimeter offers 8 test ranges and 5 test functions. The clamp-on feature allows high power mains to be measured safely. Supplied ready to use with shrouded test probes, zipped carry bag and battery.
Please read this manual thoroughly and ensure all contents are fully understood before using the apparatus.
Warning
To avoid possible electric shock or personal injury, and to avoid possible damage to the tester or to the equipment under test, adhere to these following rules:
Before using the tester inspect the case. Do not use the tester if it is damaged or the case (or part of the case) is removed. Look for cracks or missing plastic. Pay attention to the insulation around the connectors.
Inspect the test leads for damaged insulation or exposed metal.
Check the test leads for continuity.Do not apply more than the rated voltage, as marked on the tester, between the terminals or between any terminal and grounding.
The rotary switch should be in the right position and no changeover of range shall be made during measurement is conducted to prevent damage.
When the tester is working at an effective voltage over 60V in DC or 30Vrms in AC, special care should be taken for there is danger of electric shock.
Use the proper terminals, function, and range for your measurements.
Do not use or store the tester in an environment of high temperature, humidity, explosive, flammable, damp or of a strong magnetic field. The performance of the tester may deteriorate after being exposed to any of these elements.
When using the test leads, keep your fingers behind the finger guards.
Disconnect circuit power and discharge all high-voltage capacitors before testing resistance, continuity, diodes.
Replace the battery as soon as the battery indicator appears. With a low battery, the meter may produce false readings that can lead to electric shock and personal injury.
Remove the connection between the testing leads and the circuit being tested and turn the meter power off before opening the meter case.
The internal circuit of the meter shall not be altered at will to avoid damage of the meter and any accident.
A soft cloth and mild detergent should be used to clean the surface of the tester on a regular basis. No abrasive and solvent should be used to prevent the surface of the tester from corrosion or damage.
The tester is suitable for indoor use only.
Turn the tester power off when it is not in use and take out the battery when not using for a long time. Check the battery regularly; replace the battery immediately if any signs of leaking appear. Battery acid will damage the tester.
Multimeter compatible table
Model | DCV | ACV | ACA | Ω | ![]() |
---|---|---|---|---|---|
CMT01 | Y | Y | Y | Y | Y |
Technical Specifications
Accuracies are guaranteed for 1 year, 23ºC ± 5ºC, less than 80% RH.
DC Voltage
Range | Resolution | Accuracy |
---|---|---|
200mV | 100uV | ±(0.5% of rdg + 3D) |
2V | 1mV | |
20V | 10mV | ±(0.8% of rdg + 5D) |
200V | 100mV | |
600V | 1V | ±(1.0% of rdg + 5D) |
OVERLOAD PROTECTION: 600Vrms.
AC Voltage
Range | Resolution | Accuracy |
---|---|---|
200V | 100mV | ±(1.0% of rdg + 5D) |
600V | 1V | ±(1.2% of rdg + 5D) |
Frequency Range: 45Hz ~ 450Hz
Overload Protection: 250Vrms AC
Response: Average, calibrated in rms of sine wave
Audible Continuity
DESCRIPTION | |
---|---|
Built-in buzzer sounds if resistance is less than 30±20Ω |
Overload Protection: 250V DC/AC rms
AC Current
Range | Resolution | Accuracy (50Hz ~ 60Hz) |
---|---|---|
200A | 100mA | ±(2.5% + 13) |
1000A | 1A | ±(2.5% + 8) @ <800A |
For reference only @>800A |
Overload Protection: 1200A within 60 seconds.
Jaw Opening: 2.09” (53mm)
Resistance
Range | Resolution | Accuracy |
---|---|---|
200Ω | 0.1Ω | ±(1.0% of rdg + 10D) |
20kΩ | 10Ω | ±(1.0% of rdg + 4D) |
200kΩ | 100Ω | |
2MΩ | 1kΩ |
Open Circuit Voltage: about 3V
Overload Protection: 250Vrms DC/AC for 15 sec max.
Operating Instructions
Voltage Measurement
Connect red test lead to “V” jack, black lead to “COM” jack.
Set RANGE switch to desired VOLTAGE position, if the voltage to be measured is not known beforehand, set switch to the highest range and reduce it until satisfactory reading is obtained.
Connect test leads to device or circuit being measured.
Turn on power of the device or circuit being measured voltage value will appear on Digital Display along with the voltage polarity.
Current Measurement
Ensure that “Data Hold” button is not in pressed position.
Set range switch to the ACA 1000A range. If the display indicates one or more leading zeros. Shift to the 200A range
to improve the resolution of the measurement.Press the trigger to open the transformer jaws and clamp
one conductor only, measurements cannot be obtained when
two or more cables are clamped at the same time.Display reading is flow the conductor AC current.
Resistance Measurement
Connect red lead to “Ω”, black lead to “COM”.
Set the range switch to desired Ω range.
If the resistance being measured is connected to a circuit, turn off power and discharge all capacitors before measurement.
Connect test leads to circuit being measured.
Read resistance value on Digital Display.
Continuity Test
Connect the BLACK test lead to the “COM” jack and the RED to the “VΩ” jack (Note: The polarity of the red test lead is positive “+”).
Set the range switch to range.
Connect the test leads across the load to be measured.
If the circuit resistance is lower than about 30±20Ω,
the built-in buzzer will sound.
Battery Replacement
Battery and fuse replacement should only be done after the test leads have been disconnected and power is off.
Loosen screw with suitable screwdriver and remove case.
The meter is powered by a single 9V PP3 battery. Snap the battery connector leads to the terminals of a new battery and reinsert the battery into the case top. Dress the battery leads so that they will not be pinched between the case bottom and case top.
Replace the case bottom and reinstall the screw. Never operate the meter unless the case bottom is fully closed.
Accessories
- Instruction manual
- Set of test leads (red and black)
- 9V PP3 battery
Specification
Specification | Value |
---|---|
Power supply | 9Vdc (1 x PP3 supplied) |
DC voltage | 600V |
AC voltage | 600V |
AC current | 200-1000A |
Resistance | 200 Ohms - 2M Ohms |
Dimensions | 230 x 68 x 37mm |
Weight | 203g |
Precautions
CAUTION | ||
RISK OF ELECTRIC SHOCK DO NOT OPEN | ||
CAUTION : TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK) NO USER-SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL |
This symbol indicates that dangerous voltage constituting a risk of electric shock is present within this unit
This symbol indicates that there are important operating and maintenance instructions in the literature accompanying this unit
Safety Notice
- Prior to use, read through this safety guide.
- Pay attention to safety warnings.
- Observe all operating requirements.
- For any items designed for indoor use only, do not operate near water or in humid environments.
- For cleaning, only use a lint-free, dry cloth.
- Install according to the specifications.
- Place away from heat sources or heating appliances.
- During placement, ensure adequate support for the product and access to controls and connectors.
- Do not obstruct any cooling vents or openings and allow adequate space for air flow.
- Use only power connections supplied with the product or suitable equivalents.
- Do not modify the equipment in any way.
- For any mains powered appliances, ensure that the mains voltage is as described in the specifications.
- Keep powered products and batteries away from the reach of children.
- In case of malfunction, water ingress or other damage, consult qualified service personnel.
- Avoid pressure or impact to the housing that may result in damage when transporting or installing this product.
- For any Earthed mains product, ensure that the power supply has a protective Earth connection.
- Keep all packaging materials out of reach of children.
Indoor use only : The "House" symbol identifes electrical equipment designed primarily for indoor use.
Disposal : The "Crossed Wheelie Bin" symbol on the product means that the product is classed as Electrical or Electronic equipment and should not be disposed with other household or commercial waste at the end of its useful life. The goods must be disposed of according to your local council guidelines.
AVSL (EUROPE) Ltd, Unit 3D North Point House, North Point Business Park, New Mallow Road, Cork, Ireland