SHAHE Digital Torque Wrench Instruction Manual

1. Overview

The SHAHE Digital Torque Meter is a precision instrument designed for monitoring torque during fastening and disassembly tasks. It features simple operation, portability, multi-unit conversion, audible and visual indications, and adjustable forward and reverse capabilities. This tool is widely applicable in automotive, bicycle, and various mechanical maintenance and industrial settings.

2. Functional Features

• High Accuracy: Bidirectional reading error is ±2% clockwise and ±2.5% counterclockwise, ensuring precise measurements for improved work efficiency.
• Multiple Units: Easily switch between four torque units: kgf.cm, N.m, lbf.ft, and lbf.in.
• Audible and Visual Alarms: Provides acousto-optic alarms to indicate when the target torque is reached, enhancing operational accuracy and safety. The buzzer sounds and the LCD lights up upon reaching the target value.
• Backlight Function: The display features a backlight for clear data readability in low-light conditions or at night.
• Multi-mode Operation: Supports three working modes: real-time (track) mode, peak mode, and preset (pre) mode.
• Power Supply: Operates on 2 x 1.5V AAA batteries (not included).
• Automatic Shutdown: The device automatically shuts down after 2 minutes of inactivity to conserve battery power.

Image: Key features of the SHAHE Digital Torque Wrench, including accuracy, unit conversion, and alarm functions.

3. Product Components

The digital torque meter consists of the main body, display, control buttons, and adapter interface.

Image: Diagram illustrating the main components: Adapter, Plus(+) button, Minus(-) button, Save button (M), Settings button (U/S), Switch button (P/C), Buzzer (rear), Signal Lamp, and Display screen.

Image: Detailed view of the LCD display, showing indicators for Battery Power, Data Storage, Measurement Mode (track, peak, pre), Torque Unit (kgf.cm, N.m, lbf.ft, lbf.in), and Torque Value.

4. Specifications

Model-Specific Ranges:

Image: Specifications table for various ANC models, detailing minimum graduation value, maximum operating range, and connector sizes.

5. Setup and Basic Operation

5.1. Starting Up

Short press the P/C button to turn on the device. If the battery display indicates insufficient power after startup, the device will automatically shut down. Replace the batteries (2 x 1.5V AAA) to resume normal operation.

Image: The SHAHE Digital Torque Wrench and accessories in its protective case, including the instruction manual.

5.2. Unit Switching

In the power-on state, press the U/S button to cycle through and select one of the four engineering units: kgf.cm, N.m, lbf.ft, or lbf.in.

Image: Display showing the four available units for torque measurement: lbf.ft, lbf.in, kgf.cm, and N.m.

5.3. Setting Preset Value (in Track Mode)

1. Press the "+" or "-" button to adjust the desired preset torque value.
2. Press the U/S button to save the preset value.

6. Operating Instructions

6.1. Working Mode Switch

In the measurement interface, if no torque value is displayed, press the M button to switch between the following working modes:

• Real-time Mode (Track): The displayed torque value changes continuously with the applied force. When force is removed, the display returns to 0.
• Peak Mode (Peak): After setting a preset value, the display will show the maximum torque achieved during continuous force application. When force is removed, the display records and locks this peak torque value. This value will flash. Press the P/C button to clear the peak torque.
• Preset Value Mode (Pre): After setting a preset value, the display shows the current torque. As force is applied, the reading increases and decreases with the force. When the target torque is approached, the alarm functions activate.

6.2. Sound and Light Alarm Function

Ensure the buzzer function is enabled (see section 6.9). In preset value mode, as the applied torque approaches 80% of the preset value, the red LED light will flash and the buzzer will sound. As the torque gets closer to the preset value, the flashing and buzzing will become faster. When 100% of the preset value is reached, the red LED light will be continuously on, and the buzzer will sound continuously. The alarms will cease as the torque weakens.

Image: Illustration of the audible and visual alarm system, indicating a beeping alarm and red light when the preset target force value is reached.

6.3. Clear Function

To reset the display when a force value is shown, lightly press the P/C button.

6.4. Data Storage

During measurement, press the M button lightly to save the current torque value. A "5ucc" message will appear, indicating successful storage. The upper left corner of the display shows the number of saved data entries.

6.5. Data View

From the non-operation measurement interface, long press the M button to view all saved data. Use the "+" or "-" buttons to navigate through individual data entries. To exit data view, tap the M button.

6.6. Data Deletion

In the data viewing interface, tap the U/S button to select deletion mode: "ALL" for all data, or "ONE" for deleting data one by one from the last entry. After selecting, tap the P/C button to execute deletion.

6.7. Restore Factory Setting

To restore the device to factory settings: long press the U/S button to enter the system setting interface. Lightly press U/S to select "RSET". Use the "+" button to select "1" for restore or "0" to cancel. Press U/S to confirm. The tool will initialize and return to the measurement interface.

6.8. Buzzer On/Off

To control the buzzer: long press the U/S button to enter system settings. Lightly press U/S to select "BUZZ". Use the "+" button to select "1" for ON or "0" for OFF. Lightly press P/C to exit.

6.9. Backlight Function

To control the backlight: long press the U/S button to enter system settings. Lightly press U/S to select "LTON". Use the "+" button to select "1" for ON or "0" for OFF. Lightly press P/C to exit.

7. Maintenance and Storage

• Recalibration: For optimal accuracy, recalibration is recommended approximately once a year.
• Avoid Over-Torque: Do not exceed 120% of the full scale. Excessive torque (beyond 105% of max range) can damage the device or reduce accuracy.
• Handle with Care: Avoid violent shaking or dropping the torque meter.
• Environmental Conditions: Do not expose the device to high temperatures, high humidity, or direct sunlight.
• Moisture: If the torque meter gets wet, wipe it immediately with a dry towel.
• LCD Protection: Do not apply excessive pressure to the LCD screen.

8. Troubleshooting

8.1. Overload Warning

If the applied torque exceeds 120% of the full scale, the screen will display "OLOAD" and the torque meter will suspend operation. Remove the torque immediately and press the P/C button to recover. If the issue persists, contact the manufacturer for assistance.

9. User Tips

• This digital torque wrench is highly versatile due to its multiple unit conversion options, making it suitable for various tasks.
• Remember to have 2 AAA batteries on hand, as they are not included with the product.
• The audible and visual alarms are a great feature for preventing over-tightening, especially in critical applications like car wheel lug nuts.

10. Package Contents

Image: The complete package contents, including the digital torque meter, adapters, and documentation.

11. Warranty and Support

This product comes with a Warranty Card as listed in the package contents. For detailed warranty information and support, please refer to the provided documentation.

A comprehensive user manual in PDF format is available for download or viewing: View User Manual (PDF).