ANENG SZ26 Smart Car Multimeter User Manual

1. Introduction

The ANENG SZ26 is a smart multimeter specifically designed for automotive maintenance and general electrical measurements. It features a user-friendly design, accurate readings, and a comprehensive set of functions. The device is equipped with a protective cover and a large LCD display for clear visibility. Its input terminals are connected to a PTC thermistor, offering enhanced protection for the instrument's core components.

This multimeter is capable of measuring DC voltage, DC current, AC voltage, AC current, resistance, crystal diode, circuit continuity (on/off), engine closing angle (DWELL), and engine speed (RPM). It is an ideal portable tool for professional automotive inspection and maintenance, engineering design, experimental testing, and production testing.

2. Package Contents

Please check the package contents upon receipt to ensure all items are present:

• 1 x Packing box
• 1 x User Manual
• 1 x Storage bag
• 1 x ANENG SZ26 Multimeter
• 1 x Pair of Test Leads (Pen line)
• 2 x Alligator Clips

3. Product Features and Components

The ANENG SZ26 Multimeter is designed with several key features for ease of use and durability:

• Soft Silicone Sheath: Provides effective protection against drops and impacts.
• Large LCD Display: Clear 1999 count digital display for easy reading.
• Function Turntable: Allows selection of various measurement modes and ranges.
• Data Hold Key: Freezes the displayed reading for convenient viewing.
• Automatic Shutdown: Powers off automatically after 15 minutes of inactivity to conserve battery.
• Intelligent Anti-Burn: Built-in protection for enhanced safety.
• Low Power Prompt: Indicates when the battery needs replacement.
• Integrated Kickstand: A bracket at the back provides convenient positioning for hands-free operation.

1. Silicone sheath
2. LCD liquid crystal display
3. Diode/Buzzer indicator
4. Data hold key
5. Resistance gear
6. Function turntable
7. DC voltage gear
8. Red test lead positive socket
9. Black test lead negative socket (COM)
10. RPM speed gear
11. Power switch button
12. DWELL closed angle gear
13. DC current gear
14. AC voltage gear
15. 10A current positive socket
16. mA current positive socket
17. Low power prompt indicator

4. Setup

4.1 Battery Installation

The ANENG SZ26 Multimeter requires one 9V (6F22) battery for operation. To install the battery:

1. Locate the battery compartment cover on the back of the multimeter.
2. Use a screwdriver to open the battery compartment.
3. Insert a new 9V battery, ensuring correct polarity.
4. Close the battery compartment cover and secure it with the screw.

4.2 Connecting Test Leads

Connect the black test lead to the 'COM' (common) socket and the red test lead to the appropriate input socket based on the measurement type (e.g., 'VΩmA' for voltage, resistance, or small current, or '10A' for high current measurements).

Important: Always ensure test leads are connected to the correct sockets for the selected measurement function to prevent damage to the multimeter or personal injury.

5. Operating Instructions

To begin, press the power switch button (11) to turn on the multimeter. The device features multiple ranges within each gear, allowing for accurate measurements. Remember to select the appropriate function and range using the function turntable (6).

Caution: When connecting test leads, ensure they are plugged into the correct four jacks below the display. Incorrect connection can lead to damage.

5.1 Engine Speed (RPM) Measurement

1. Set the function turntable to the 'RPM' speed gear (10).
2. Connect the black test lead to a grounded metal part of the car (e.g., engine block or battery negative terminal).
3. Connect the red test lead to the distributor low voltage terminal or the ignition coil's negative end.
4. Start the engine.
5. Read the value on the display. Multiply the displayed value by 10 to get the actual engine speed in RPM.

5.2 Engine Closure Angle (DWELL) Measurement

The appropriate closing angle allows the ignition coil to accumulate maximum energy at any engine speed, ensuring optimal ignition.

1. Set the function turntable to the 'DWELL' closed angle gear (12).
2. Connect the black test lead to a grounded metal part of the car (e.g., engine block or battery negative terminal).
3. Connect the red test lead to the distributor low voltage terminal or the ignition coil's negative end.
4. Turn the engine to read the closing angle on the display.

5.3 DC Voltage Measurement

1. Set the function turntable to the 'V=' (DC Voltage) gear (7).
2. Connect the test leads across the component or circuit to measure DC voltage.
3. Read the value on the display.

5.4 AC Voltage Measurement

1. Set the function turntable to the 'V~' (AC Voltage) gear (14).
2. Connect the test leads across the AC power source or component.
3. Read the value on the display.

5.5 Resistance Measurement

1. Set the function turntable to the 'Ω' (Resistance) gear (5).
2. Connect the test leads across the resistor or component to be measured.
3. Read the resistance value on the display.

5.6 Diode Test

1. Set the function turntable to the 'Diode' gear (3).
2. Connect the red test lead to the anode and the black test lead to the cathode of the diode.
3. Read the forward voltage drop on the display. An intact diode will show a voltage drop and may light up if it's an LED.

5.7 Continuity Test (Buzzer)

1. Set the function turntable to the 'Buzzer' gear (3).
2. Connect the test leads to both ends of the circuit or component (e.g., a wire or fuse).
3. If the multimeter beeps, it indicates an unobstructed circuit (continuity). No sound indicates a break or damage.

5.8 DC Current Measurement

1. Set the function turntable to the 'A=' (DC Current) gear (13).
2. Connect the red test lead to the appropriate current socket ('VΩmA' for mA or '10A' for A).
3. Connect the multimeter in series with the circuit where you want to measure the current.
4. Read the current value on the display.

Warning: When measuring current, always connect the multimeter in series with the circuit. Never connect it in parallel across a voltage source, as this will damage the instrument.

6. Specifications

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

7. Maintenance

• Cleaning: Use a soft, dry cloth to clean the multimeter. Do not use abrasive cleaners or solvents.
• Storage: Store the multimeter in a dry, cool place away from direct sunlight and extreme temperatures. If storing for an extended period, remove the battery to prevent leakage.
• Battery Replacement: Replace the 9V battery when the low power prompt indicator appears on the display.
• Protective Sheath: The soft silicone sheath provides protection against drops. Ensure it is properly fitted to the multimeter.

8. Troubleshooting

• Product Not Operating Properly: If the product is not functioning as expected, please record a detailed video demonstrating the issue. Contact ANENG customer service with the video for expert assistance and solutions.
• Incorrect Readings: Ensure the test leads are correctly plugged into the appropriate sockets for the selected measurement function. Verify that the function turntable is set to the correct range.
• Damage During Use: This product requires a certain degree of electrical knowledge. Always follow proper operating procedures and select the correct measurement method to avoid dangerous situations. Damage resulting from improper use may be considered man-made and might not be covered under standard after-sales service.
• Current Measurement Issues: When measuring current, always connect the multimeter in series with the circuit. Connecting it in parallel across a voltage source will damage the multimeter.

9. User Tips

• Hands-Free Operation: Utilize the built-in kickstand at the back of the multimeter for convenient hands-free operation during measurements.
• Accurate Range Selection: The multimeter offers multiple ranges within each function. Select the most appropriate range for your measurement to ensure higher accuracy.
• Data Retention: Use the 'HOLD' button to freeze the current reading on the display, which is useful for recording values in difficult-to-view situations.
• Safety First: Always double-check your connections and settings before taking any measurements, especially when dealing with live circuits.

10. Warranty and Support

ANENG is committed to providing quality products and customer satisfaction. For any after-sales questions or support, please refer to the following guidelines:

• After-Sales Questions: If you encounter any issues during the use of the product, please contact ANENG customer service. Providing a detailed video of the product's malfunction can help our experts and technicians quickly diagnose the problem and offer a solution.
• Quality Issues: For quality problems not caused by 'man-made damage', replacement services or refunds may be provided. Contact customer service to discuss specific product damage and available solutions (e.g., replacement of parts, full machine replacement, or partial/full refund).
• Product Use Assistance: This product is technical and requires some electrical knowledge. If you have operational questions or need assistance with product usage, contact ANENG customer service for timely support.