Laserliner MultiClamp-Meter Pro

Function/Application

The MultiClamp-Meter Pro is a current and voltage measuring clamp for measurements within the overvoltage category CAT III up to a maximum of 600V. The meter can be used to measure DC and AC voltages, DC and AC currents, resistance, and perform continuity tests within the specified ranges. Additionally, the device features a PEAK function, a MAX/MIN display, a Hold function, and a True RMS measurement (Root-Mean-Square). The device is also equipped with a flashlight and an illuminated display.

Safety Instructions

• Use the device exclusively according to its intended purpose and within the scope of the specifications.
• Before taking any measurement, ensure that the area to be tested (e.g., a line), the test device, and the accessories used (e.g., connection cable) are in perfect working order. Test the device by connecting it to known voltage sources (e.g., a 230V socket for AC testing or a car battery for DC testing). Do not use the device if one or more of its functions fail.
• Exercise extreme caution when working with voltages greater than 25V AC or 60V DC. Touching electrical conductors at these voltages poses a risk of life-threatening electric shock.
• Ensure that the correct connections, the correct rotary switch position, and the correct range are always selected for the measurement to be taken.
• Before measuring or testing resistance or continuity, disconnect the power supply to the circuit. Ensure that all high-voltage capacitors are discharged.
• Only use the original measuring leads. Their voltage, category, and ampere rated powers must match those of the measuring device.
• If you need to hold the measuring tips, do so only by the grip sections. Do not touch the measuring contacts while the measurement is being taken.
• Do not use the device in environments contaminated with conductive particles or where temporary conductivity may occur due to moisture (e.g., condensation).
• If the device becomes wet or comes into contact with other conductive residue, do not work under voltage. At voltages of 25V AC or 60V DC and above, moisture increases the risk of life-threatening electric shocks. Clean and dry the device before use. When using the device outdoors, ensure appropriate weather conditions and/or suitable protective measures are taken.
• Do not perform measurements in close proximity to electrical installations alone; do so only under the instruction of a responsible qualified electrician.
• The device must be disconnected from all power sources before opening the battery compartment cover.
• If possible, do not work alone.

Symbols

• ⚠️ Warning of dangerous electrical voltage: Unprotected live components inside the device housing may pose a risk of electric shock.
• ⚠️ Danger area warning
• Protection Class II: The test device has reinforced or double insulation.
• CAT III: Overvoltage category III: Equipment in fixed installations and for applications where specific requirements regarding the reliability and availability of equipment must be met, e.g., switches in fixed installations and devices used in industrial applications with permanent connection to the fixed installation.

Device Overview

The device features a non-contact voltage detector (1), a current clamp (2), a flashlight (3), a flashlight ON/OFF button (4), a rotary switch for selecting measuring functions (5), a toggle switch for 'PEAK', 'MAX/MIN', 'DCA Zero', 'AC/DC' (6), and an LC display (7). It also includes a COM input socket (8), an AC warning indicator (9), a clamp opening button (10), a Hold function/backlighting ON/OFF button (11), a V Ω input socket (12), test prods (13), and measuring contacts (14).

The LC display shows various indicators:

• A: Negative measured value
• B: Direct (DC) or alternating (AC) variables
• C: Low battery charge
• D: ADC zero position
• E: PEAK function
• F: MAX/MIN display
• G: Hold function
• H: Measured value display
• I: Ω measurement unit
• J: V measurement unit
• K: A measurement unit
• L: Measurement scale

Display messages include:

• O.L.: Open line / Overflow: Measuring circuit not closed or measuring range exceeded.

Operation and Functions

AUTO-OFF Function

To conserve batteries, the device automatically switches off after approximately 10 minutes of inactivity. A signal sounds beforehand.

1. Battery Insertion

Diagram shows opening the battery compartment and inserting two 1.5V AAA batteries.

2. AC Current Measurements

Procedure: Set the rotary switch to "200A AC". Place the current clamp around a line. The measured value is shown on the LC display. Diagrams illustrate correct (clamp around a single wire) and incorrect (clamp around multiple wires) placement.

3. PEAK Hold Function

Procedure: Set the rotary switch to "200A AC" and press the "MAX/MIN" button to activate the PEAK function. Place the current clamp around a line. Switch on the consumer unit. The significant peak value (10~282.8 A) is displayed. The device can detect fast current peaks (<10 milliseconds).

4. True RMS (ACA / ACV)

When measuring AC voltage/current, the device displays the true RMS value regardless of the waveform. A graph illustrates waveform components: 1 Peak value, 2 Peak-to-peak value, 3 RMS value, 4 Cycle duration.

5. DC Current Measurements

Procedure: Set the rotary switch to "200A DC". Press and hold the "MAX/MIN" button for 2 seconds for zeroing. Place the current clamp around a line. The measured value appears on the LC display. Pressing the "MAX/MIN" button displays MAX/MIN values. Diagrams illustrate correct and incorrect clamp placement.

6. AC/DC Voltage Measurements

Procedure: Connect the red test prod to the V Ω input socket (12) and the black test prod to the COM input socket (8). Set the rotary switch to "V AC/DC". The device displays the "AC" voltage mode. Press and hold the "MAX/MIN" button for 2 seconds to measure DC voltage. Connect the measuring contacts to the object to be tested. Diagrams show probe connections and the device.

The measured value is shown on the LC display. Pressing the "MAX/MIN" button displays MIN/MAX values.

⚠️ When measuring voltage, resistance measurement and continuity test functions must not be activated.

7. DCA Zero

When measuring DC voltages, press and hold the "MAX/MIN" button for 2 seconds to reset the value and calibrate the electronic measuring equipment. Repeatedly pressing "MAX/MIN" displays MIN/MAX values.

8. Resistance Measurement

Resistances can only be measured correctly in isolation; therefore, components may need to be disconnected from the circuit. Procedure: Connect the red test prod to the V Ω input socket (12) and the black test prod to the COM input socket (8). Set the rotary switch to "Ω". Connect the measuring contacts to the object. A signal sounds if the measured value is < 30 Ω. Diagrams show probe connections and clamp usage.

⚠️ For resistance measurements, ensure measuring points are free from dirt, oil, solder spray, or other contaminants to avoid distorted results.

⚠️ For resistance measurements, components must be zero-potential.

9. MAX/MIN Function

Press the "MAX/MIN" button to activate the function. The display shows the "MAX" value, updated automatically. Pressing again shows the "MIN" value. Pressing again shows the current value. Press and hold for 2 seconds to exit.

10. Continuity Test

Procedure: Connect the red test prod to the V Ω input socket (12) and the black test prod to the COM input socket (8). Set the rotary switch to "•" (continuity symbol). Connect the measuring contacts to the object. An acoustic signal sounds if the test is positive (< 30 Ω). Diagrams show probe connections.

⚠️ For continuity tests, components must be zero-potential.

11. Hold Function

Press the "HOLD" button to briefly hold the current measured value. Press the button again to deactivate the function for further measurements.

12. Voltage Detection, Non-Contact (AC Warning)

The integrated non-contact voltage detector identifies AC voltages from 100V to 600V. Switch on the device and run the sensor along the object (5-10 mm). The display (9) lights up if AC voltage is detected. Diagrams show the sensor placement.

⚠️ Non-contact voltage detection is not a substitute for conventional voltage testing. The device detects an electrical field and reacts to static charge.

Voltage Detection, Single-Pole Phase Test

Remove the black test prod. Set the device to "V AC/DC" and connect the red test prod to the phase or neutral conductor. The red display (9) lights up if the phase conductor is live. This function may be affected by conditions like insulating protective equipment or insulated locations.

⚠️ The single-pole phase test is not suitable for checking for zero voltage; a two-pole phase test is required.

13. Flashlight Function

Press and hold the corresponding button to switch on the flashlight. The light switches off automatically when the button is released.

14. Backlight

Press and hold the "Hold" button (11) for 2 seconds to turn on the backlighting. Press the "Hold" button twice to turn it off.

15. Calibration

The meter requires regular calibration and testing to ensure accurate results. A calibration interval of one year is recommended.

Technical Data

Subject to technical alterations. 07.2010.

EU Directives and Disposal

This device complies with all necessary standards for the free movement of goods within the EU. This product is an electric device and must be collected separately for disposal according to the European Directive on waste electrical and electronic equipment (WEEE). ♻️

Further safety and supplementary notices are available at: www.laserliner.com/info

Service

Umarex GmbH & Co KG - Laserliner
Möhnestraße 149, 59755 Arnsberg, Germany
Tel.: +49 2932 638-300, Fax: +49 2932 638-333
Email: laserliner@umarex.de

Umarex GmbH & Co KG
Donnerfeld 2
59757 Arnsberg, Germany
Tel.: +49 2932 638-300, Fax: -333
www.laserliner.com