ANENG 622B Smart Laser Multimeter User Manual

1. Safety Information

To fully understand the function of the meter and ensure safe operation, please read and follow this manual carefully. Improper use may cause electric shock or damage to the meter. Always follow standard safety regulations and take effective safety precautions.

1.1 Safety Instructions

• When using the meter, users must follow standard safety rules.
• Ensure universal protection against electric shock.
• Prevent misuse of the meter.
• After receiving the meter, check for damage in transit.
• After storage and shipment in poor condition, check and confirm whether the meter is damaged.
• The test leads must be in good condition. Before use, check whether the insulation of the test leads is damaged and whether the metal wire is exposed.

1.2 Electrical Symbols

• ▲ Note: For important safety information, refer to the instruction manual.
• ! Can be used on dangerous charged objects.
• □ Double insulation protection (Class II).
• CAT III 600V: In accordance with IEC-61010-1 overvoltage (installation) Class III, contamination level 2 refers to the level of voltage protection provided to withstand pulses.
• CE: Comply with European Community (EU) standards.
• ⏚: Grounding.

2. Product Description

2.1 Part Names and Functions

The ANENG 622B Multimeter features a clear VA color screen and intuitive controls. Refer to the diagram below for an overview of its components:

Figure 1: ANENG 622B Multimeter Product Function Diagram

1. Indicator light
2. Inverse display screen
3. 10A current jack
4. mA current jack
5. Negative socket
6. Positive socket
7. Single press: NCV; Long press: Live zero line
8. REL: Clear
9. Max: maximum value; Min: minimum value
10. SEL: function switching
11. Single press: data retention; Long press: flashlight switch
12. Laser infrared switch

2.2 LCD Touch Display Symbols

The LCD displays various symbols to indicate the current mode and status:

Figure 2: VA Reverse Display Screen

3. Specifications

The ANENG 622B Multimeter is designed for stable performance, high precision, and reliability. It features a 9999-count display and various measurement capabilities.

3.1 General Specifications

• Automatic Selection: Measuring function and range.
• Overload Protection: Full range.
• Max Voltage: 1000V DC or 750V AC between measuring end and ground.
• Working Height: Maximum 2000m.
• Display: VA Color Larger HD LCD Display.
• Max Display Value: 9999 digits.
• Polarity Indication: Automatic, '-' indicates negative polarity.
• Superview Display: 'OL' or '-OL'.
• Sampling Time: About 3 times/second.
• Unit Display: With function, electric quantity unit display.
• Automatic Shutdown Time: 15 minutes.
• Power Supply: 4 x 1.5V AAA batteries (not included).
• Battery Undervoltage Indicator: LCD symbol.
• Temperature Coefficient: Less than 0.1X accuracy /°C.
• Operating Temperature: 0°C - 40°C.
• Storage Temperature: -10°C - 50°C.
• Material: ABS+TPE.
• Laser Pointing Lamp: Yes.
• Data Hold: Yes.
• Low Battery Indication: Yes.

3.2 Detailed Measurement Parameters

Figure 3: ANENG 622B Detailed Parameters Table

4. Operating Instructions

4.1 Initial Setup and Power On

Before first use, install 4 AAA batteries into the multimeter. Ensure correct polarity. Secure the battery cover with the provided screw.

Figure 4: Battery Installation

Long press the top power button to turn the multimeter on. If the battery voltage is low (less than 3.7V), the low battery symbol will be displayed, and batteries should be replaced.

4.2 Button Function Operation

• FUNC. (SEL) Button: When there are multiple measurement functions in one gear, press the "SEL" key to switch between functions.
• Reading Retention (HOLD): During measurement, press the "HOLD" key to lock the displayed value. Press again to release.
• Flashlight: Long press the flashlight button (labeled with a lightbulb icon) for 2 seconds to turn on the flashlight. Long press again for 2 seconds to turn it off. It will also turn off automatically after about 15 minutes.
• Laser Pointing Lamp: Press the laser button (labeled with a laser icon) to turn on the infrared laser for positioning. The laser module gives a red light indication.
• REL (Relative Value Measurement): Press the "REL" key to set the current displayed value as a reference. Subsequent measurements will be automatically subtracted from this reference. Press "REL" again to exit.
• MAX/MIN (Maximum/Minimum Value Measurement): Press the "MAX/MIN" key to enter this mode. Cycle through maximum and minimum values by pressing the button. Long press for 2 seconds to exit.

4.3 Automatic Shutdown

If there is no operation within 15 minutes after startup, the meter will go into sleep mode to save power. The buzzer will sound 1 minute before shutdown. After automatic shutdown, press the power button to wake up the instrument.

4.4 Measurement Preparation

When no measurement is being carried out, the instrument will enter the automatic scanning state, displaying "AUTO".

4.5 NCV Non-Contact Voltage Detection

Press the "NCV" key to enable the NCV function. The meter will display "NCV". Put the NCV sensor close to the tested wire. The meter can detect AC voltage >90V. The buzzer will alarm, and the LCD analog bar will display induction intensity. The closer to the power source, the more urgent the alarm.

Figure 5: NCV Induction in use

Note:

• Even if there is no alarm indication, voltage may still exist. Do not rely solely on non-contact electric shock voltage detectors to determine if there is voltage in the wire. Probing operations may be affected by socket design, insulation thickness, and other factors.
• In NCV detection mode, the meter will not measure voltage, resistance, or current simultaneously.

4.6 Live Single Watch Pen Fire Line Judgment

Long press the "Live" key for 2 seconds to switch to the firewire judgment function. The meter displays "Live". Signal high indicates a live line. No reaction indicates a zero line. Long press the "Live" key again for 2 seconds to enter AUTO automatic scanning mode.

Figure 6: Live Line Detection

4.7 AC and DC Voltage Measurement

Insert the black test lead into the COM jack and the red test lead into the V jack. The test leads are connected to both ends of the voltage source or load for measurement, and the reading is displayed on the LCD.

In AUTO mode, if the measured signal is >0.5V, the meter will display the AC/DC voltage value. If the measured signal is <0.5V, the meter will default to electric resistance value, showing the internal resistance value of the measured signal.

Press "SEL" key to switch to DC or AC mV voltage. Connect the test leads together to both ends of the voltage source or load for measurement and read on the LCD.

In mV voltage measurement mode, if the measured signal is less than 600.0mV, the meter will display the current measured DC voltage value. If the measured signal is >600.0 mV, the instrument will display "OL".

Figure 7: AC Voltage Measurement

4.8 AC and DC Current Measurement

Insert the test lead into the mA or 10A current input hole. The meter will automatically recognize the function and enter the current gear (default DC current gear).

If the measured signal is >0.01mA (for mA input) or >20mA (for 10A input), the meter will display the current measured value. If the AC signal is >30mA (for mA input) or >3.00A (for 10A input), the secondary display shows the AC current frequency.

Figure 8: Current Measurement (Series Connection Required)

Note:

• AC and DC current measurements require series connection to the circuit.
• When the meter is in diode measurement gear, inserting the test lead into mA or 10A current input will not enter the current gear.

4.9 Resistance Measurement

Insert the black test lead into the COM jack and the red test lead into the Ω jack. Connect the test leads to the measured resistance or both ends of the line for measurement. The reading is displayed on the LCD.

Figure 9: Resistance Measurement

Note:

• When measuring impedance on the line, ensure the circuit is disconnected and the capacitor on the circuit is completely discharged.
• When the input is open, the LCD will display "OL" (overrange).
• If the resistance being measured is higher than 10MΩ, the meter may take several seconds to stabilize the reading. This is normal for high resistance readings.

4.10 Capacitance Measurement

Press "SEL" key to switch to capacitor gear. Use the test leads to measure the capacitance value of the capacitor. The reading is displayed on the LCD.

Figure 10: Capacitance Measurement

Note:

• Before measuring capacitance, it is necessary to discharge both ends of the metal contact capacitor.
• When measuring large capacitance, it takes a certain time to stabilize the reading.
• When measuring polar capacitance, pay attention to the corresponding polarity to avoid damage to the meter.

4.11 Temperature Measurement

Press "SEL" key to switch to TEMP mode. Insert the thermocouple's red plug into the °C/°F end and the black plug into the COM jack. When the reading is stable, the temperature value can be read directly from the display screen.

Figure 11: Temperature Measurement

Note:

• The maximum measurement temperature of a type K thermocouple is 250°C, with instantaneous measurement up to 300°C.
• Accuracy does not include error of thermocouple probe.

4.12 Diode Test

Insert the black test lead into the COM jack and the red test lead into the diode jack. Press "SEL" to switch to the diode measurement gear. Connect the red test lead to the diode anode and the black test lead to the diode cathode. Read the forward voltage drop on the LCD.

Figure 12: Diode Measurement

Note:

• The meter displays an approximation of the forward voltage drop of the diode.
• If the test leads are connected inversely or open, the LCD displays "OL".

4.13 Line Connection Test (Continuity)

Insert the black test lead into the COM jack and the red test lead into the continuity jack. Touch the "SEL" key to switch to the line connection test state. Connect the test leads to both ends of the line for measurement. If the resistance of the measured line is less than 50 Ω, the buzzer inside the meter will sound.

Figure 13: Line Connection Test

Note:

• Danger of electric shock. When testing the circuit, ensure it is disconnected and any capacitors are completely discharged.
• If the meter is open or the resistance of the measured line is greater than 600Ω, "OL" is displayed.

4.14 Frequency/Duty Cycle Measurement

Gauge cross-zero for Hertz measurement. Display duty cycle values at the same time.

Figure 14: Frequency Measurement

4.15 Infrared Laser Positioning

The multimeter features an infrared laser for precise positioning during inspections, making tasks like house or power inspections more convenient.

Figure 15: Infrared Laser Positioning

4.16 Flashlight Lighting

The multimeter is equipped with three flashlights to increase the range of lighting, providing assistance in dark environments and helping to prevent electric shock.

Figure 16: Auxiliary Lighting

4.17 Product Demonstration Video

Video 1: ANENG 622B Multimeter Product Demonstration

5. Maintenance

5.1 General Maintenance

• Do not attempt to open the bottom case to adjust or repair the instrument. Such operations should only be performed by qualified technicians.
• The test leads should be removed from the circuit under test before opening the instrument backing.
• Clean the meter with a damp cloth and mild detergent. Do not use abrasives or solvents.
• Turn off the power when the meter is not in use.

5.2 Battery Replacement

To avoid false readings that may result in electric shock or personal injury, replace the battery immediately when the low battery symbol appears. Do not short circuit the battery or reverse its polarity.

1. Turn off the power supply of the meter and remove the test leads.
2. Remove the battery cover by unscrewing the screws.
3. Remove the old batteries and replace them with new 1.5V AAA batteries of the same specification. Pay attention to the polarity.
4. Install the battery cover back to its original position and secure it with screws.

Warning:

• In order to ensure safe operation and maintenance of the meter, remove the batteries if the device is not used for a long time, to prevent battery leakage from damaging the product.

5.3 Replacing the Fuse

To prevent possible electric shock, personal injury, or damage to the instrument, use a fuse of the same or specified size.

1. Turn off the power supply of the meter and remove the test leads.
2. Remove the back cover by unscrewing the screws.
3. Remove the burnt fuse and replace it with a new fuse of the same specification.
4. Ensure the new fuse is loaded into the safety clamp and clamped tightly.
5. Install the back cover and fasten it with screws.

6. Troubleshooting

If the multimeter is not functioning as expected, consider the following common issues:

• No Display/Faint Display: Check battery level. Replace batteries if the low battery indicator is on or if the display is faint.
• "OL" Reading: This indicates an overrange condition (measurement exceeds the meter's maximum range) or an open circuit. Check your connections and ensure the measured value is within the meter's specifications.
• Inaccurate Readings: Ensure test leads are properly connected and in good condition. Verify the correct measurement function is selected. For resistance measurements, ensure the circuit is de-energized and capacitors are discharged.
• No Buzzer Sound for Continuity: Check if the resistance of the measured line is above 50 Ω. If so, the buzzer will not sound.
• NCV Not Detecting: Ensure the NCV sensor is close enough to the wire. Note that insulation thickness and socket design can affect detection.

If problems persist after checking these points, contact customer support or a qualified technician.

7. User Tips

• Always start with the highest range when measuring an unknown voltage or current to prevent damage to the multimeter.
• For capacitance measurements, always discharge capacitors before testing to avoid damaging the meter or getting inaccurate readings.
• Utilize the data hold function (HOLD) to freeze readings on the display, which is useful in situations where the display is hard to see during measurement.
• The laser positioning feature is excellent for identifying target points in dimly lit or hard-to-reach areas, enhancing safety and accuracy.
• Remember to turn off the multimeter after use to conserve battery life, especially since it uses 4 AAA batteries.

8. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the documentation provided at the time of purchase or contact the seller directly. Keep your purchase receipt as proof of purchase.