ANENG SZ818 PRO Digital Multimeter User Manual

1. Overview

The ANENG SZ818 PRO is a professional rechargeable digital multimeter designed for accurate and safe electrical measurements. It complies with the safety requirements of the international electrical safety standard IEC-61010, specifically 600V CAT IV, 1000V CAT.III, and Pollution Degree 2 requirements of IEC61010.

This versatile tool features a built-in 3.7V lithium battery for convenience and offers a wide range of functions including AC/DC voltage, AC/DC current, resistance, capacitance, frequency (Hz), Live wire detection, Non-Contact Voltage (NCV) detection, Diode test, hFE triode test, and BAT battery detection for 1.5V, 3V, 9V, and 12V batteries.

2. Safety Information

Please read this instruction manual carefully before using the instrument and pay close attention to all safety warnings and guidelines.

• Do not exceed 600V when performing CAT III voltage measurements.
• Do not exceed 1000V when performing CAT IV voltage measurements.
• Ensure the multimeter is set to the correct function and range before making any measurements.
• When the battery indicator appears, the battery should be charged immediately. Low battery power can lead to inaccurate readings.
• Always disconnect test leads from the circuit before changing functions or ranges.

2.1. Current Measurement Warnings

AC and DC current measurements require series connection to the circuit. Failure to follow these instructions can cause severe damage to the multimeter and potential injury.

1. It is strictly prohibited to directly connect the positive and negative poles of the power supply in the current measurement mode. Otherwise, internal circuit damage may occur, leading to the multimeter burning out.
2. It is strictly prohibited to directly connect the positive and negative poles of the power supply to the current input jack when measuring voltage. Otherwise, internal circuit damage may occur, leading to the multimeter burning out.

3. Setup

3.1. Battery Charging

The ANENG SZ818 PRO is powered by a built-in 3.7V lithium battery. Before first use, or when the low battery indicator appears, the battery needs to be charged.

1. Locate the Type-C charging port on the side of the multimeter.
2. Connect the provided Type-C charging cable to the multimeter and a standard DC5V power adapter (not included).
3. The charging indicator will typically show red when charging and extinguish when fully charged.

3.2. Test Lead Connection

Connect the test leads to the appropriate input jacks on the multimeter:

• The black test lead (negative) should always be connected to the COM jack.
• The red test lead (positive) should be connected to the VΩHz jack for voltage, resistance, frequency, capacitance, and diode measurements.
• For current measurements (up to 10A), connect the red test lead to the 10A jack.
• For smaller current measurements (mA), connect the red test lead to the BAT mA jack.

4. Operating Instructions

4.1. Multimeter Components

1. Display screen: Shows measurement readings and indicators.
2. Function switch key (SEL): Used to select sub-functions within a main rotary switch position.
3. Data retention (H): Holds the current display reading.
4. Triode jack (hFE): For testing transistors.
5. Shutdown (Power button): Turns the multimeter on/off.
6. Resistance (Ω): Rotary switch position for resistance measurement.
7. Diode/On/Off (Continuity): Rotary switch position for diode test and continuity check.
8. Capacitor (mF/µF/nF): Rotary switch position for capacitance measurement.
9. AC/DC current (A/mA/µA): Rotary switch position for current measurement.
10. Hz hertz (Hz): Rotary switch position for frequency measurement.
11. BAT battery detection (1.5V/3V/9V/12V): Rotary switch position for battery voltage detection.
12. hFE triode: Rotary switch position for hFE triode testing.
13. AC/DC voltage (V): Rotary switch position for voltage measurement.
14. NCV Voltage Detection / Live: Naught FireWire: Rotary switch position for non-contact voltage and live wire detection.
15. Function turntable: Main rotary switch to select measurement modes.
16. 10A red positive jack: Input for high current measurements (up to 10A).
17. BAT mA red positive jack: Input for battery and milliampere current measurements.
18. COM black negative jack: Common input for all measurements.
19. Red positive jack (for VΩHz): Input for voltage, resistance, frequency, capacitance, and diode measurements.
20. Pen holder: For storing test leads.
21. 3.7V lithium battery compartment: Houses the internal rechargeable battery.
22. Type-C charging port: For charging the internal battery.
23. Back bracket: Allows the multimeter to stand upright.

4.2. Measurement Procedures

To perform a measurement, turn the function turntable to the desired mode. Use the SEL button to switch between sub-functions if available (e.g., AC/DC voltage, Diode/Continuity).

• DC Voltage Measurement: Set the turntable to 'V' and ensure DC mode is selected. Connect test leads in parallel with the circuit. Range: 0mV~1000V.
• AC Voltage Measurement: Set the turntable to 'V' and ensure AC mode is selected. Connect test leads in parallel with the circuit. Range: 0mV~750V.
• DC Current Measurement: Set the turntable to 'A' (or mA/µA) and ensure DC mode is selected. Connect test leads in series with the circuit. Refer to Section 2.1 for critical warnings. Range: 0μA~10.00A.
• AC Current Measurement: Set the turntable to 'A' (or mA/µA) and ensure AC mode is selected. Connect test leads in series with the circuit. Refer to Section 2.1 for critical warnings. Range: 0μA~10.00A.
• Resistance Measurement: Set the turntable to 'Ω'. Connect test leads across the component. Range: 0Ω~200MΩ.
• Capacitance Measurement: Set the turntable to 'mF/µF/nF'. Connect test leads across the capacitor. Range: 0nF~2mF.
• Hz (Frequency) Measurement: Set the turntable to 'Hz'. Connect test leads to the signal source. Range: 2kHz.
• Live/NCV Detection: Set the turntable to 'NCV/Live'. Hold the multimeter near the conductor. The display will show 'LIVE' for neutral and '----' with a beep for live.
• Diode Test: Set the turntable to the diode symbol. Connect test leads across the diode.
• hFE Triode Test: Insert the transistor leads into the hFE triode jack.
• BAT Battery Detection: Set the turntable to 'BAT'. Insert the red test lead into the BAT jack and the black lead into COM. Connect to the battery terminals. Supports 1.5V, 3V, 9V, 12V batteries.

5. Maintenance

• Cleaning: Use a soft, dry cloth to clean the multimeter. Do not use abrasive cleaners or solvents.
• Battery Charging: Regularly charge the built-in 3.7V lithium battery using a standard DC5V Type-C charger to ensure optimal performance and prevent inaccurate readings due to low power.
• Storage: When not in use for extended periods, store the multimeter in a cool, dry place.
• Auto Power Off: The multimeter features an auto power-off function that activates after 15 minutes of no operation to conserve battery life.

6. Troubleshooting

• Inaccurate Readings: Check if the battery is low and needs charging. Ensure test leads are properly connected and the correct function/range is selected.
• "OL" Display: This indicates an over-range condition. Select a higher range or verify that the measured value is within the multimeter's capabilities.
• Multimeter Not Turning On: Ensure the battery is charged. If it still doesn't turn on after charging, contact support.
• Damage During Current Measurement: If the multimeter was incorrectly connected in parallel for current measurement, it might be damaged. Refer to Section 2.1 for prevention.

7. Specifications

The parameters below are for reference only; actual measurements of specific equipment may vary.

7.1. General Specifications

• Power Supply: 3.7V (built-in 3.7V 14500 lithium battery)
• Input Impedance: 10MΩ
• Maximum Input Voltage: 1000V DC or 750V AC RMS
• Slew Rate: Approximately 3 times/second (analog strip 30 times/second)
• Monitor: 1999 counts LCD display with automatic unit symbols.
• Overrange Indicator: "OL" displayed on LCD.
• Polarity Indication: "-" sign automatically displayed.
• Maximum Allowable Voltage (between measuring end and earth): 1000V DC or 750V AC RMS
• Fuse Protection (mA file): FF 200mA/250V
• Material: ABS
• Weight: 191g

8. User Tips

• Start Simple: For beginners, always start with basic voltage and resistance measurements to familiarize yourself with the multimeter's operation before moving to more complex functions.
• Secure Connections: Always ensure test leads are securely connected to the correct input jacks and to the circuit under test to avoid inaccurate readings or potential damage.
• Hands-Free Operation: Utilize the integrated back bracket to prop up the multimeter, allowing for hands-free operation and easier viewing of the display during measurements.
• Regular Charging: Make it a habit to charge the built-in lithium battery regularly, especially before critical tasks, to ensure consistent and reliable performance.
• Check Accessories: Keep track of all accessories, including the charging cable and test leads. A complete accessories list is shown in Figure 13.

9. Warranty and Support

For technical assistance, troubleshooting, or warranty-related inquiries, please contact the ANENG Official Store or your original point of purchase. Keep your purchase receipt as proof of purchase.