1. Introduction
This manual provides detailed instructions for the safe and effective use of your new Clamp-style Tachymeter. This multifunctional device is designed for accurate measurement of projectile velocity and kinetic energy, making it an essential tool for enthusiasts and professionals alike. Please read this manual thoroughly before operating the device.
2. Product Features
- Intuitive Display: The panel features a clear digital display tube, function key, and LED indicator for easy readability and operation.
- Enhanced Stability: Four-sided air design effectively minimizes impact during testing, improving overall stability and accuracy.
- Compact and Portable: Mini size ensures easy portability and convenient handling.
- High Precision: Utilizes a high-accuracy measurement system with a clamp rail, ensuring consistent path alignment for minimal error and dynamic fluctuation.
- Versatile Measurement: Capable of measuring both speed (velocity) and kinetic energy.
- Data Recording: Can record up to 36 groups of speed values and 36 groups of kinetic energy values.
- Advanced Power Management: Built-in lithium cell with over-charging, over-discharging, and short-circuit protection. Includes intelligent shutdown and low-power shutdown functions.
3. Specifications
| Parameter | Value |
|---|---|
| Working Voltage | DC 3.7V |
| Accuracy | Test error ≤ 0.1% |
| Built-in Cell | 1 * 3.7V 450mAh Lithium Cell |
| Working Temperature | -10℃ to 60℃ |
| Speed Measurement Range | 1-2000 m/s |
| Energy Measurement Range | 1-2000 J |
| Speed Record Capacity | 36 groups |
| Kinetic Energy Record Capacity | 36 groups |
| Material | ABS |
| Dimensions (L x W x H) | 13 x 7.4 x 5 cm (5.11 x 2.91 x 1.96 in) |
| Color | Black |
4. Package Contents
The package typically includes the following items:
- 1 x Clamp-style Tachymeter Unit
- 1 x USB Charging Cable
- 1 x Clamp Mechanism
- 1 x Hex Key (for clamp adjustment)
- 1 x U-shaped Bracket (for alternative mounting)
5. Quick Start Guide
Follow these steps for a quick setup and initial measurement:
- Power On: Locate and press the function key to power on the device.
- Positioning: Place the device on a stable, flat surface or securely attach it using the provided clamp mechanism. Ensure the measurement path is clear.
- Target Alignment: Aim the device directly at the target area where the projectile will pass for accurate speed measurement.
- Measurement: Press the micro-touching button to initiate the measurement of speed and kinetic energy.
6. Detailed Operation
6.1 Device Overview
- Function Key: The micro-touching button on the device serves as the primary function key for power on/off and initiating measurements.
- Indicator Light: Provides visual feedback on device status.
- Display: Shows measurement data (speed, kinetic energy) and current mode.
6.2 Unit Conversion
The device supports one-click conversion between Meters per Second (m/s) and Feet per Second (FPS) modes. Refer to Figure 6.1 for visual identification of these modes on the display.
6.3 Data Recording
The tachymeter can store up to 36 groups of speed measurements and 36 groups of kinetic energy measurements. Consult the full PDF manual for instructions on how to access and manage recorded data.
7. Maintenance
- Storage: Always keep the device dry and away from moisture to prevent damage to internal components.
- Cleaning: To clean the exterior of the device, use a soft, damp cloth. Do not use harsh chemicals or abrasive materials.
- Battery Care: The built-in lithium cell is protected against over-charging, over-discharging, and short circuits. For optimal battery life, avoid extreme temperatures during charging and storage.
8. Troubleshooting
- Device does not power on: Ensure the battery is charged. Connect the device to a power source using the USB charging cable.
- Inaccurate readings: Verify that the device is positioned stably and aligned correctly with the projectile's path. Ensure there are no obstructions in the measurement area. Check for sufficient lighting conditions.
- Display issues: If the display is dim or flickering, the battery might be low. Recharge the device.
- Data not recording: Ensure the device has sufficient power. If the issue persists, try powering off and on again.
9. User Tips
Based on general usage practices for similar devices, consider the following tips:
- Consistent Setup: For comparative measurements, try to maintain a consistent setup (distance from muzzle, lighting, etc.) to minimize variables.
- Environmental Factors: Be aware that extreme temperatures or very low light conditions can sometimes affect measurement accuracy.
- Battery Life: Charge the device fully before extended use. The intelligent shutdown feature helps conserve battery when not in active use.
10. Safety Information
WARNINGS:
- Consult a doctor before use if you have any health concerns that might be exacerbated by activities involving projectile measurement.
- Ensure clear space for movement during operation to prevent accidents.
GENERAL SAFETY:
- Keep the device dry and away from moisture.
- Do not attempt to disassemble or modify the device, as this may void the warranty and pose safety risks.
- Always handle projectiles and firearms responsibly and in accordance with all local laws and safety guidelines. This device is a measurement tool and does not replace safe handling practices.
11. Warranty and Support
For any issues, questions, or support needs regarding your Clamp-style Tachymeter, please contact our store support. You may also refer to the official user manual PDF for additional details and advanced features: User Manual (PDF).





