ANENG PN128 AC/DC Clamp Multimeter Instruction Manual

1. Introduction

The ANENG PN128 is a compact 3 3/4-digit smart digital multimeter designed for high precision and reliability. It features automatic identification and measurement of AC/DC voltage and resistance, eliminating the need to manually select functions via a dial. This instrument offers stable performance, high accuracy, high reliability, clear readings, and comprehensive overload protection.

Powered by three AAA 1.5V batteries, the PN128 boasts a large LCD display with ultra-high brightness for both the backlight and flashlight, even at low battery levels. Its portable design makes it an ideal tool for laboratories, factories, electronics enthusiasts, and household use.

2. Safety Precautions

This instrument is designed and manufactured in compliance with IEC1010 safety standards (Pollution Degree II). To ensure safe operation and prevent personal injury or damage to the instrument, please read and strictly adhere to the following safety warnings and operating instructions:

• Electric Shock Hazard: Exercise extreme caution when measuring voltages above 30V, currents above 10mA, AC power lines with inductive loads, or during power fluctuations.
• Test Lead Connection: Before each measurement, verify that the test leads are reliably connected, correctly inserted, and well-insulated to prevent electric shock.
• Instrument Condition: Do not use the instrument if it is not functioning properly or appears damaged.
• Function Verification: Before critical measurements, test the meter on a known voltage to confirm its proper operation.
• Battery Replacement: Only replace batteries with the same model or electrical specifications. Ensure test leads are disconnected from any measurement points and no signals are present at the input before replacing batteries.
• Personal Insulation: When performing electrical measurements, avoid direct body contact with the ground. Do not touch exposed metal terminals, output ports, or lead clips that may have ground potential. Always use dry clothing, rubber shoes, rubber mats, and other insulating materials to maintain body insulation from the ground.
• Environmental Conditions: Do not store or use the instrument in high temperature, high humidity, flammable, explosive, or strong magnetic field environments.
• Input Limits: Do not input values exceeding the instrument's specified limits to prevent electric shock or damage.
• Servicing: Do not attempt to calibrate or repair the instrument yourself. Any servicing must be performed by specially trained or certified qualified professionals.
• Low Battery Indicator: When the LCD displays the low battery symbol (battery icon), replace the batteries promptly to ensure measurement accuracy.
• Circuit Modification: Please do not arbitrarily change the instrument's internal circuitry, as this may damage the instrument and compromise safety.

3. Product Features

The ANENG PN128 Clamp Multimeter offers a wide range of measurement capabilities and convenient features:

• NCV Induction: Non-Contact Voltage detection.
• AC/DC Current: Measures up to 600A.
• Frequency (Hz): Measures frequency.
• Temperature (°C/°F): Measures temperature.
• Resistance (Ω): Measures resistance.
• Diode: Diode test function.
• On-off Beep: Continuity test with audible buzzer.
• Capacitor: Measures capacitance.
• Maximum/Minimum: Records maximum and minimum readings.
• Flashlight Lighting: Built-in flashlight for illuminated work areas.
• Automatic/Manual Range: Flexible ranging options.
• Backlit Bright Screen: Clear display in various lighting conditions.
• Relative Value (REL): Measures relative values.
• Data Retention (HOLD): Holds the displayed reading.

Visual representation of the ANENG PN128's key features.

4. Components and Panel Display

The ANENG PN128 comes with the following components and features a clear panel display for easy operation:

4.1. Package Contents:

• ANENG PN128 Clamp Meter
• Storage Bag
• Manual
• Watch Pen (Test Leads)
• Temperature Line (Thermocouple)
• Packing Box

Overview of the ANENG PN128 Clamp Meter and its included accessories.

4.2. Panel Display Layout:

• NCV Sensor: For non-contact voltage detection.
• Pliers: Clamp jaw for current measurement.
• Flashlight: Illuminates the measurement area.
• Wrench: Indicates the wrench symbol on the dial.
• Temperature: Temperature measurement function.
• Resistance/Buzzer/Capacitors/Diodes: Functions selected via the dial.
• Maximum/Minimum (MAX/MIN): Button to toggle max/min readings.
• Flashlight/Manual Range (RAN): Button to toggle flashlight or manual range.
• LCD Screen: Digital display for readings.
• Black Watch Pen Jack (COM): Common input terminal.
• Red Watch Pen Jack (INPUT MAX600V): Input terminal for voltage, resistance, capacitance, etc.
• AC/DC Current (A~): Current measurement function.
• Hz: Frequency measurement function.
• Turntable: Rotary dial for function selection.
• AC/DC Voltage (V~): Voltage measurement function.
• Relative Value/Data Switching (REL): Button for relative measurement or data switching.
• Backlight Bright Screen/Data Retention (B/L H): Button for backlight or data hold.

Detailed view of the ANENG PN128's panel display and its various components.

5. Setup and Initial Operation

5.1. Battery Installation

The ANENG PN128 requires three AAA 1.5V batteries for operation. Follow these steps to install them:

1. Using a screwdriver, open the back battery compartment cover.
2. Insert three AAA batteries, ensuring correct polarity (+/-).
3. Close the battery compartment cover and secure it with the screw.

Step-by-step guide for battery installation.

5.2. General Operation

The PN128 features automatic ranging for most measurements. Simply turn the rotary dial to the desired function (e.g., A~ for current, V~ for voltage, Ω for resistance) and the meter will automatically select the appropriate range. For specific measurements, refer to the detailed instructions below.

6. Measurement Functions

6.1. DC Current Measurement

To measure DC current, switch the dial to the 'A~' position and clamp the meter around the conductor. The meter will display the DC current reading. This is particularly useful for automotive applications.

Measuring DC current in a vehicle.

6.2. AC Current Measurement

For AC current measurement, switch the dial to the 'A~' position. Clamp the meter around a single-stranded wire of the AC circuit. The meter will display the AC current reading. Ensure the wire is placed in the center of the clamp to avoid length errors. Note: This meter can only measure the zero line or fire line, and only a core line. It cannot measure common electrical appliances in the home power supply line because it contains multiple core wires.

Measuring AC current in an electrical panel.

6.3. NCV (Non-Contact Voltage) Measurement

Switch the dial to the 'NCV' mode. When the meter's NCV sensor detects a nearby AC voltage, a fast beep alarm will sound, indicating the presence of voltage without direct contact.

Performing non-contact voltage detection.

6.4. DC Voltage Measurement

Switch the dial to the 'V~' position. Connect the red test lead to the positive terminal and the black test lead to the negative terminal of the DC source (e.g., battery). The meter will display the DC voltage reading.

Measuring DC voltage of batteries.

6.5. AC Voltage Measurement

Switch the dial to the 'V~' position. Insert the test leads into the AC voltage source (e.g., wall outlet). The meter will display the AC voltage reading. For general household electricity, the voltage is typically around 220V.

Measuring AC voltage from a power outlet.

6.6. Resistance Measurement

Switch the dial to the 'Ω' position. Connect the test leads to both sides of the resistor. The meter will display the resistance value.

Measuring resistance of components.

6.7. Diode Measurement

Switch the dial to the diode symbol. Connect the test leads to the positive and negative terminals of the diode. The meter will display the forward voltage drop. Ensure correct polarity for accurate measurement.

Measuring diode forward voltage.

6.8. Buzzer (Continuity) Measurement

Switch the dial to the buzzer symbol. Touch the test leads to both ends of the wire or component. If continuity exists (resistance less than 50Ω), the meter will emit an alarm sound.

Performing a continuity test.

6.9. Capacitance Measurement

Switch the dial to the capacitance symbol. Before measuring, ensure the capacitor is fully discharged (short-circuit discharge is required). Then, connect the test leads to both ends of the capacitor. The meter will display the capacitance value.

Measuring capacitance of components.

6.10. Frequency Measurement

Switch the dial to the 'Hz' position. Connect the test leads to the circuit where you want to measure frequency. The meter will display the frequency reading.

Measuring frequency from a circuit.

6.11. Temperature Measurement

Switch the dial to the temperature symbol (°C/°F). Connect the temperature line (thermocouple) to the meter's input jacks. Place the thermocouple tip in contact with the object whose temperature you wish to measure. The meter will display the temperature reading.

Measuring temperature with the included thermocouple.

7. Specifications

The following table outlines the technical specifications of the ANENG PN128 Clamp Multimeter:

Note: The above parameters are for reference only, and the actual measurement of the specific equipment shall prevail.

8. Maintenance

Proper maintenance ensures the longevity and accuracy of your ANENG PN128 Clamp Multimeter:

• Cleaning: Keep the instrument clean and free from dust and debris. Use a soft, dry cloth for cleaning. Do not use abrasive cleaners or solvents.
• Storage: Store the meter in a cool, dry place, away from direct sunlight, high temperatures, high humidity, and strong magnetic fields. If storing for extended periods, remove the batteries to prevent leakage.
• Battery Replacement: Replace batteries promptly when the low battery indicator appears to maintain measurement accuracy. Refer to Section 5.1 for battery installation instructions.
• Servicing: Do not attempt to open or repair the instrument yourself. All repairs and calibrations should be performed by qualified service personnel.

9. Troubleshooting

If your ANENG PN128 is not functioning correctly, refer to the following common issues and solutions. If the problem persists, please contact ANENG customer service or your dealer for assistance.

10. Warranty and Support

For comprehensive after-sales service and support, please refer to the following guidelines:

• Quality Issues: In case of product quality problems not caused by "man-made damage," replacement or refund options may be available. Contact ANENG customer service with details and evidence (e.g., video) for resolution.
• Product Not Operating Properly: If the product is not operating normally during use, provide a detailed video to ANENG customer service. Their experts and technicians will assist in finding the problem and providing a solution.
• Product Use Questions: This product requires a certain degree of electrical knowledge. If you encounter operational problems or need assistance with product use, contact ANENG customer service for support.
• Artificial Damage: This brand is primarily used to detect electrical and other measurement products. It requires careful operating procedures to avoid dangerous events. If the product is damaged due to improper use, it will be considered man-made damage and may not be covered under warranty.
• User Manual (PDF): A detailed user manual in PDF format is available for download. View User Manual (PDF)
• Contact Information: For further after-sales service, please contact ANENG customer service directly.

ANENG's after-sales support and policies.