ANENG A3002 Pen Type Digital Multimeter

1. Introduction

The ANENG A3002 is a high-precision pen-type digital multimeter designed for a wide range of electrical measurements. Its compact and portable design makes it ideal for both professional and DIY electrical tasks. This manual provides detailed instructions for safe and effective use of the device.

Package Contents:

• 1 x ANENG A3002 Pen Multimeter
• 1 x Test Lead (Table Line)
• 1 x Instruction Manual

Figure 1: ANENG A3002 Pen Multimeter and accessories.

2. Safety Warnings and Precautions

To avoid possible electric shock or personal injury, and to prevent damage to the meter or equipment under test, comply with the following practices:

• Do not use the meter if it is damaged. Before use, inspect the case and pay particular attention to the insulation surrounding the connectors.
• Inspect the test leads for damaged insulation or exposed metal. Check test leads for continuity. Replace damaged test leads before use.
• Do not use the meter if it operates abnormally. Protection may be impaired. If in doubt, have the meter serviced.
• Do not operate the meter around explosive gas, vapor, or dust.
• Do not apply more than the rated voltage, as marked on the meter, between terminals or between any terminal and earth ground.
• Before use, verify the meter's operation by measuring a known voltage.
• When measuring current, turn off circuit power before connecting the meter in the circuit.
• When servicing the meter, use only specified replacement parts. Do not use the Meter in a manner not specified by this manual or the safety features of the Meter may be impaired.
• Use with caution when working above 30V AC RMS, 42V peak, or 60V DC. Such voltages pose a shock hazard.
• When using the probes, keep your fingers behind the finger guards on the probes.
• Connect the common test lead before you connect the live test lead. When you disconnect test leads, disconnect the live test lead first.
• Remove the test leads from the meter before you open the battery door.
• Do not operate the meter with the battery door or portions of the cover removed or loosened.
• To avoid false readings, which could lead to possible electric shock or personal injury, replace the batteries as soon as the low battery indicator () appears.

3. Product Overview

The ANENG A3002 is a versatile pen-type multimeter with a compact design, allowing for single-handed operation. It features a clear HD backlit screen for easy reading in various lighting conditions.

Figure 2: ANENG A3002 Multimeter Components.

Key Functions:

• Function Selection Dial: Rotate to select measurement modes (V~, V=, mA~, mA=, NCV, Ohm, Diode/Continuity, Capacitance).
• SELECT Button: Short press to switch functions within a mode (e.g., ACV/DCV, ACA/DCA).
• RANGE Button: Short press for manual range adjustment. Long press for auto range mode.
• HOLD/* Button: Short press for data retention. Long press to turn on/off the flashlight and backlight.
• Removable Cap: Protects the red test lead tip.
• COM Terminal: Connects the black test lead.

4. Specifications

General Specifications:

• Display: 3-3/4 digits LCD with a maximum reading of 4000.
• Measurement Rate: 2-3 times/second.
• Over Range Indication: "1" figure only in the display.
• Automatic Negative Polarity Indication.
• Low Battery Indication: The "" symbol is displayed when the battery voltage drops below the operating voltage.
• Full Range Overload Protection.
• Capacitance Measurement: Auto-Zeroing.
• Auto Power Off: Automatically cuts off after approximately 15 minutes of inactivity.
• Operating Temperature: 0℃ ~ 40℃ (32℉ ~ 104℉), 0~75% R.H.
• Storage Temperature: -10℃ ~ 50℃ (14℉ ~ 122℉), 0~75% R.H.
• Power: 2 x 1.5V AAA batteries.
• Dimensions: 205mm (L) x 43mm (W) x 32mm (H)
• Weight: Approximately 80g (including battery).
• Safety Compliance: IEC 61010-1, 2000 CAT I 1000V overvoltage standards.

Figure 3: Product Parameters and Dimensions.

5. Setup

5.1 Battery Installation

1. Ensure the multimeter is turned OFF and disconnect all test leads from the device.
2. Locate the battery compartment cover on the back of the multimeter.
3. Open the cover and insert two 1.5V AAA batteries, observing the correct polarity (+/-).
4. Close the battery compartment cover securely.

5.2 Connecting Test Leads

1. Remove the dust plug from the COM terminal on the multimeter.
2. Insert the black test lead into the "COM" terminal.
3. The red test lead is integrated into the pen-type design. Ensure its removable cap is in place when not in use, or removed for measurements.

6. Operating Instructions

Before any measurement, ensure the test leads are correctly connected and the multimeter is set to the appropriate function and range.

6.1 DC Voltage Measurement (DCV)

1. Set the Function dial to the "V=" position.
2. If necessary, press the "SELECT" key to ensure DCV is selected (indicated on the display).
3. Connect the red test pen to the positive side of the circuit and the black test lead to the negative side.
4. Read the displayed voltage value. The polarity of the integrated test pen will be indicated.

6.2 AC Voltage Measurement (ACV)

1. Set the Function dial to the "V~" position.
2. If necessary, press the "SELECT" key to ensure ACV is selected (indicated on the display).
3. Connect the red test pen and the black test lead across the circuit points where AC voltage is to be measured.
4. Read the displayed voltage value.

6.3 DC Current Measurement (DCA)

1. Set the Function dial to the "mA=" position.
2. If necessary, press the "SELECT" key to ensure DCA is selected.
3. WARNING: Current measurement must be performed in series with the circuit. Turn off circuit power before connecting the meter. The measurement range shall not exceed 200 mA.
4. Connect the multimeter in series with the circuit.
5. Read the displayed current value. The polarity at the integrated test pen connection will be indicated.

6.4 AC Current Measurement (ACA)

1. Set the Function dial to the "mA~" position.
2. If necessary, press the "SELECT" key to ensure ACA is selected.
3. WARNING: Current measurement must be performed in series with the circuit. Turn off circuit power before connecting the meter. The measurement range shall not exceed 200 mA.
4. Connect the multimeter in series with the circuit.
5. Read the displayed current value.

6.5 Resistance Measurement (OHM)

1. Set the Function dial to the "Ω" position.
2. If necessary, press the "SELECT" key to select "Ω".
3. WARNING: To avoid electrical shock or damage to the Meter, ensure the power to the circuit is turned off and all capacitors are discharged before measuring resistance or continuity.
4. Connect the red test pen and the black test lead in parallel across the component to be measured.
5. Read the displayed resistance value.

6.6 Capacitance Measurement

1. Set the Function dial to the "" position.
2. Press the "SELECT" key to select "".
3. WARNING: To avoid damage to the Meter, disconnect circuit power and discharge all high-voltage capacitors before measuring capacitance.
4. Connect the red test pen and the black test lead across the terminals of the tested capacitor.
5. Read the displayed capacitance value.

6.7 Diode & Continuity Test

1. Set the Function dial to the "))" position.
2. Press the "SELECT" key to select "" for diode test or "))" for continuity test.
3. For diode test, connect the red test pen to the anode and the black test lead to the cathode of the diode. Read the forward voltage drop. Reverse the leads to check for open circuit.
4. For continuity test, connect the test leads across the circuit or component. A built-in buzzer will sound if the resistance is less than 30±10Ω.

6.8 Non-Contact Voltage (NCV) Sensing

1. Set the Function dial to the "NCV" position.
2. Place the top of the multimeter near the AC charged body (e.g., an electrical outlet or wire).
3. When the sensor detects the presence of an AC electric field, the internal buzzer will alarm and the corresponding induced voltage intensity will be displayed on the LCD screen.

Note: This function is only used for the presence of inductive electric field, so it is not possible to judge whether the measured circuit is safe. Use with caution.

6.9 Zero FireWire Identification

1. Set the Function dial to the "NCV" position.
2. Insert the black COM test lead into the socket hole.
3. Touch the red test pen to the live wire (Firewire). The screen will display 'EF' and the alarm will beep quickly.
4. Touch the red test pen to the neutral wire. The screen will display 'EF' but there will be no buzzer sound.

Figure 4: Zero FireWire Identification.

6.10 Flashlight and Backlight

• Flashlight: Long press the "HOLD/*" button to turn on/off the flashlight.
• Backlight: Long press the "HOLD/*" button to turn on/off the backlight. The HD backlit screen allows for clear readings in dark environments.

6.11 Data Retention (HOLD)

• Short press the "HOLD/*" button to freeze the current reading on the display. Press again to release.

6.12 Auto Power Off

• The multimeter will automatically shut down after approximately 15 minutes of no operation to conserve battery life. To resume operation, turn the device off and then on again.

Figure 5: Automatic Shut-down Feature.

7. Maintenance

Proper maintenance ensures the longevity and accuracy of your ANENG A3002 multimeter.

7.1 General Cleaning

• Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasive cleaners or solvents, as these can damage the casing.
• Dirt or moisture in the terminals can affect readings.

7.2 Cleaning the Terminals

1. Turn the meter OFF and remove the test leads.
2. Shake out any dirt that may be in the terminals.
3. Soak a new swab with isopropyl alcohol and work around the inside of each input terminal.
4. Use a new swab to apply a light coat of fine machine oil to the inside of each terminal.

7.3 Battery Replacement

Replace batteries when the low battery indicator () appears on the display to ensure accurate readings and prevent potential electric shock or personal injury due to false readings.

1. Ensure the multimeter is turned OFF and all test leads are removed.
2. Open the battery compartment cover.
3. Remove the old batteries and insert two new 1.5V AAA batteries, observing correct polarity.
4. Close the battery compartment cover securely.

7.4 Calibration

Beyond replacing batteries, do not attempt to repair or service your Meter unless you are qualified and have the relevant calibration, performance test, and service instructions. The recommended calibration cycle is 12 months.

8. Troubleshooting

If you encounter issues with your ANENG A3002 multimeter, refer to the following common troubleshooting steps:

• No Display or Faint Display: Check battery levels and replace if necessary. Ensure batteries are inserted with correct polarity.
• Incorrect Readings: Verify that the correct measurement function and range are selected. Ensure test leads are properly connected and not damaged. Clean the test terminals if dirty. Ensure the circuit under test is within the meter's specified range.
• Meter Does Not Turn On: Check battery installation and charge. If the meter has been inactive for 15 minutes, it may have auto-powered off; turn the dial OFF and then ON again.
• Buzzer Not Sounding During Continuity Test: Ensure the resistance is below 30±10Ω. Check test lead connections.
• NCV Not Detecting Voltage: Ensure the NCV function is selected and the meter's tip is close enough to the AC source.

If problems persist after following these steps, contact ANENG customer service for further assistance.

9. User Tips

• Always double-check your function and range settings before making a measurement to prevent damage to the meter or the circuit.
• For current measurements, remember to connect the multimeter in series with the load and ensure the circuit power is off before connecting.
• When measuring capacitance, always discharge the capacitor first to avoid damaging the meter.
• Utilize the HD backlit screen and flashlight feature for improved visibility in dimly lit work areas.
• The compact pen-type design allows for easy one-handed operation, but always maintain a secure grip and keep fingers behind the probe guards.

10. Warranty and Support

For information regarding product warranty, returns, or technical support, please refer to the official ANENG Official Store or contact their customer service directly. Keep your purchase records for any warranty claims.

A PDF version of the user manual is available for download: ANENG A3002 User Manual (PDF)