PEAKMETER AC/DC 1000A Clamp Multimeter User Manual

1. Introduction

The PEAKMETER PM2128 and PM2128S are advanced digital clamp meters designed for precise electrical measurements. These meters offer a wide range of functions including DC/AC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, Temperature (PM2128 only), LowZ, and DC uA. Key features include a Max value hold function, auto/manual ranging selection, and a working backlight for ease of use in various environments.

This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your clamp multimeter. Please read it thoroughly before use.

Figure 1: PEAKMETER Clamp Multimeter in use.

2. Package Contents

Upon opening your package, please verify that all items listed below are present and in good condition:

• 1 x AC/DC Clamp Multimeter (PM2128 or PM2128S)
• 1 x Multimeter Test Pen (Level: 1000V 10A)
• 1 x Cloth Bag for storage
• 1 x Thermocouple Probe (Included only with PM2128 model)
• 1 x Instruction Manual
• 1 x Original Color Box

Figure 2: Included accessories with the clamp multimeter.

3. Setup

3.1. Battery Installation

The multimeter requires 3 x 1.5V AAA batteries (not included). To install or replace batteries:

1. Ensure the multimeter is turned OFF.
2. Locate the battery compartment cover on the back of the device.
3. Use a screwdriver to loosen the screw(s) securing the cover.
4. Remove the battery compartment cover.
5. Insert three 1.5V AAA batteries, observing the correct polarity (+/-) as indicated inside the compartment.
6. Replace the cover and tighten the screw(s).

Figure 3: Battery compartment for 3x AAA batteries.

3.2. Connecting Test Leads

To perform measurements, connect the test leads to the appropriate input jacks:

• Insert the red test lead into the 'INPUT' jack (positive).
• Insert the black test lead into the 'COM' jack (common/negative).

For temperature measurements with the PM2128, connect the thermocouple probe to the designated input terminals, observing polarity.

Figure 4: Test leads connected to the multimeter.

4. Operating Instructions

Familiarize yourself with the controls and display of your clamp multimeter:

Figure 5: Front panel controls and features of the PM2128.

4.1. Power On/Off and Function Selection

• Turn the rotary dial to the desired measurement function (e.g., V~ for AC Voltage, A~ for AC Current, Ω for Resistance).
• To turn off the meter, rotate the dial to the 'OFF' position.
• The meter features an automatic shutdown time of 10 minutes to conserve battery life.

4.2. Basic Measurements

The meter automatically selects the measurement function and range. Ensure the test leads are correctly connected for voltage, resistance, capacitance, and frequency measurements.

• Voltage (V~ / V–): Select the appropriate voltage range. Connect test leads in parallel with the circuit. Max. voltage between measurement terminal and ground: 1000V DC or 1000V AC.
• Current (A~ / A–): For AC/DC current, clamp the jaw around a single conductor. Do not clamp around multiple conductors as this will result in an inaccurate reading.
• Resistance (Ω): Ensure the circuit is de-energized before measuring resistance. Connect test leads across the component.
• Capacitance (‡): Ensure capacitors are discharged before measurement.
• Frequency (Hz): Connect test leads to the signal source.
• Temperature (TEMP): (PM2128 only) Connect the thermocouple probe to the meter and place the probe tip on the object to be measured.
• Non-Contact Voltage (NCV): Position the NCV sensing area near a live AC voltage source. The NCV alarm indication will activate.
• Low Impedance Voltage (LoZ V): This function helps detect ghost voltages by providing a low impedance input.
• DC Microampere (uA): For precise DC current measurements in microampere range.

4.3. Special Functions

• FUNC Button: Used to switch between different functions within a single rotary dial position (e.g., AC/DC current, diode/continuity).
• Data Hold / Backlight Button: Press briefly to hold the current reading on the display. Press and hold to activate/deactivate the backlight.
• RAN (Range) Button: Toggles between auto-ranging and manual ranging modes.
• Hz/% (Frequency/Duty Ratio) Button: Used to switch between frequency and duty cycle measurements.
• REL (Relative Measurement) Button: Stores the current reading as a reference value and displays subsequent measurements as a deviation from this reference.

5. Maintenance

5.1. Cleaning

To maintain the accuracy and longevity of your multimeter:

• Wipe the case with a damp cloth and a mild detergent. Do not use abrasives or solvents.
• Keep the input terminals free of dirt and moisture.

5.2. Battery Replacement

When the battery under-voltage indication symbol appears on the LCD display, replace the batteries as described in Section 3.1. Always use fresh 1.5V AAA batteries.

5.3. Storage

If the meter is not to be used for an extended period, remove the batteries to prevent leakage and damage. Store the meter in its cloth bag in a cool, dry place, away from direct sunlight and extreme temperatures.

6. Troubleshooting

If you encounter issues with your multimeter, refer to the following common problems and solutions:

7. Specifications

The following table details the technical specifications for the PM2128 and PM2128S models:

Figure 6: Detailed specifications for PM2128 and PM2128S.

General Specifications:

• Power Supply: 3 * 1.5V AAA Battery (Not Included)
• Weight: 380g
• Dimensions: 235mm x 68mm x 50mm x 45mm (Jaw Size: φ35mm)
• Max. Display Value: 6000 digit
• Sampling Time: About 3 times/second (Bargraph 10 times/second)
• Overload Protection: Throughout the range
• Operating Height: Max. 2000m
• Polarity Indication: Automatic indication, '-' indicates negative
• Over Range Display: '0L' or '-0L'
• Unit Display: Function and electricity quantity unit display
• Temperature Coefficient: Less than 0.1 × accuracy/℃

Figure 7: Physical dimensions of the clamp multimeter.

8. User Tips

• Safety First: Always ensure the meter's range and function are appropriate for the measurement you are taking. Never attempt to measure voltage on a circuit that is designed for current measurement, or vice-versa, without proper precautions.
• Check Test Leads: Before each use, inspect test leads for any signs of damage (cracks, frayed insulation). Damaged leads can pose a shock hazard.
• Auto-Ranging vs. Manual Ranging: While auto-ranging is convenient, manual ranging can sometimes provide faster readings or be necessary for specific applications. Experiment with the 'RAN' button to see which mode suits your task best.
• True RMS: Both PM2128 and PM2128S are True RMS meters, which means they can accurately measure AC voltage and current even for non-sinusoidal waveforms, providing more reliable readings in complex electrical systems.
• NCV Feature: The Non-Contact Voltage (NCV) feature is excellent for quickly checking for the presence of AC voltage without direct contact, enhancing safety.

9. Warranty and Support

For warranty information and technical support, please refer to the documentation provided with your purchase or contact the manufacturer directly. Keep your purchase receipt as proof of purchase.