1. Introduction
The RuoShui 500N Digital Force Gauge is a portable, high-precision instrument designed for measuring push and pull forces. It features a robust design with capacities ranging from 2.2 oz to 110 lbs (approximately 10N to 500N). The device offers selectable units of measurement (lb, kg, and Newton) and a reversible, easy-to-read LCD display. Its ergonomic metal housing ensures durability and protection for the sensitive load cell and electronics in various industrial environments. The force gauge is equipped with a rechargeable lithium battery and includes safety features such as short circuit, leakage, and overload protection.
2. Product Features
- High Sensitivity Sensor: Ensures fast measurement speed and high precision (Accuracy: ±0.5%).
- Multiple Units: Supports three selectable units: N (Newton), Kg (Kilogram), and Lb (Pound).
- Rechargeable Battery: Powered by a 3.7V lithium battery, providing approximately 15 hours of continuous use on a full charge.
- Safety Protections: Includes short circuit, leakage, and overload protection for enhanced product safety.
- Backlit LCD Display: Large, clear digital display with backlight for easy reading in various lighting conditions.
- Automatic Shut-down: Automatically powers off after 10 minutes of inactivity to conserve battery.
- Low Battery Indication: Provides a prompt when the battery level is low.
- Zero Function: One-key zeroing for accurate measurements.
- Peak Hold Function: Captures and displays the maximum force detected during a measurement.
- Alarm Function: Allows setting upper and lower limits for test values, with an audible beep if limits are exceeded.
- Reset Function: For clearing measurement data.
- Ergonomic Design: Product size 140mm x 71mm x 35mm, weight 300g, designed for comfortable handling.
3. Package Contents
The standard package includes the following items:
- 1 x Digital Force Gauge (Model 500N)
- 1 x Charger (EU plug, Input: AC 220V 50HZ, Output: DC 5V 1000mA)
- 4 x Clamps (various types for different applications)
- 1 x Extension Tube
- 4 x Mounting Screws
- 1 x Product Manual (this document, also available as PDF)
- 1 x Inspection Report / Check Certificate
- 1 x Fixture Head
A detailed user manual is also available in PDF format: Download User Manual (PDF)
4. Specifications
| Parameter | Value |
|---|---|
| Model | 500N |
| Max Load | 500N (50kg, 110Lb) |
| Load Graduation Value | 0.1N / 0.01kg / 0.01Lb |
| Sensor Structure | Built-in |
| Accuracy | ±0.5% |
| Display Type | DIGITAL |
| Units Selectable | N / Kg / Lb |
| Power Supply | 3.7V Lithium Battery |
| Charging Time | 4-6 hours |
| Continuous Use Time | About 15 hours |
| Battery Life | ≥300 times (recharge cycles) |
| Charger Input/Output | Input: AC 220V 50HZ, Output: DC 5V 1000mA |
| Operating Temperature | 5°C ~ 35°C |
| Transport Temperature | -10°C ~ 60°C |
| Relative Humidity | 15% ~ 80% Rh |
| Working Environment | No vibration source and non-corrosive medium around |
| Product Size | 140mm x 71mm x 35mm |
| Product Weight | 300g |
5. Setup
5.1 Charging the Battery
Before first use, ensure the force gauge is fully charged. Connect the provided charger to the power jack (5V 1A) on the side of the device. The charging time is typically 4-6 hours. A full charge provides approximately 15 hours of continuous operation.
5.2 Attaching Accessories
The force gauge comes with various clamps, an extension tube, and a fixture head to suit different measurement needs. These accessories can be screwed onto the M6 threaded rod at the top of the device.
5.3 Device Overview
- LCD: Digital display screen.
- Power Indicator: Shows battery status.
- Power Button (OFF/ON): Turns the device on or off.
- UNIT Button: Switches between measurement units (N, Kg, Lb).
- ZERO Key: Resets the current reading to zero.
- SET Button: Used for measurement mode selection and entering instrument settings.
- Power Jack: For connecting the charger.
- Reset Button: For internal reset if needed.
- Screw: M6 threaded rod for attaching accessories.
6. Operating Instructions
6.1 Power On/Off
- Press the OFF/ON button to turn the device on.
- Press and hold the OFF/ON button to turn the device off.
6.2 Basic Measurement
- Turn on the force gauge.
- Ensure the display reads "0.0" by pressing the ZERO button if necessary.
- Apply force (push or pull) to the attached accessory. The display will show the real-time force value.
- The direction of the arrow on the display indicates the direction of pressure (down arrow for push, up arrow for pull).
6.3 Unit Conversion
Briefly press the UNIT button to cycle through the available measurement units: N (Newton), Kg (Kilogram), and Lb (Pound).
6.4 Peak Hold Measurement
To enter the maximum value measurement mode (Peak Hold):
- Briefly press the SET button. The display will show "PEAK" indicating peak hold mode is active.
- Apply force. The display will hold the highest force value recorded.
- Press SET again to exit peak hold mode and return to real-time measurement.
6.5 Zeroing the Display
To zero the display before a measurement, press the ZERO button. This will reset the current reading to 0.0.
6.6 Setting Upper and Lower Limits
The instrument allows setting upper and lower limits for test values. If the measured force exceeds these limits, the instrument will beep.
- Press and hold the SET button for 4-5 seconds to enter the instrument setting menu.
- Navigate through the settings using the UNIT and ZERO buttons.
- Look for settings related to "H.Ldt" (Upper Limit) and "L.Ldt" (Lower Limit).
- Adjust the values as needed. The default upper limit is 99% of full scale, and the default lower limit is 0.
- Press SET to confirm and move to the next setting, or exit the menu.
6.7 Video Demonstration
Watch this video for a visual demonstration of the force gauge's operation, including push/pull measurement, unit switching, zeroing, and accessory attachment.
7. Maintenance
- Charging: Recharge the battery when the low battery indicator appears. Use only the provided charger.
- Cleaning: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the force gauge in a dry place, away from direct sunlight and extreme temperatures. Ensure the working environment is free from vibration sources and corrosive media.
- Battery Care: To prolong battery life, avoid completely discharging the battery frequently. If storing for an extended period, charge the battery to about 50% and recharge every few months.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display shows "Low Battery" or device turns off unexpectedly. | Battery is low or depleted. | Connect the device to the charger and allow it to charge for 4-6 hours. |
| Display shows "OL" or flashes during measurement. | Overload condition (force applied exceeds maximum capacity). | Reduce the applied force. The device has overload protection, but continuous overloading can cause damage. |
| Device beeps during measurement. | Measured value has exceeded the set upper or lower limits. | Check your measurement against the set limits. Adjust limits if necessary (refer to Section 6.6). |
| Device automatically turns off. | Automatic shut-down function activated due to inactivity. | This is normal behavior. Press the OFF/ON button to restart the device. |
| Inaccurate readings. | Device not zeroed, or environmental factors. | Ensure the device is zeroed before measurement. Operate in stable environmental conditions as specified. |
9. User Tips
- Consistent Zeroing: Always zero the force gauge before each critical measurement to ensure accuracy.
- Unit Selection: Familiarize yourself with the UNIT button to quickly switch between N, Kg, and Lb as required by your application.
- Peak Hold for Max Force: Use the Peak Hold function (briefly press SET) when you need to capture the maximum force applied during a test, such as breaking strength or maximum pull force.
- Battery Management: Keep the device charged, especially before extended use. The auto-off feature helps save battery, but a low battery can affect measurement stability.
- Accessory Compatibility: Utilize the various included clamps and the extension tube to adapt the force gauge to different testing scenarios effectively.
10. Warranty and Support
10.1 Warranty Information
- The product comes with a 1-year warranty, excluding items damaged or misused after receipt.
- Accessories are covered by a 3-month warranty.
- Defective items must be reported and returned within the warranty period, preferably in their original packaging.
- Note: Due to safety regulations, batteries are not shipped with the product as separate replacements.
10.2 Customer Support
For any issues or inquiries regarding your RuoShui Digital Force Gauge, please contact customer support directly. We are committed to providing the best solution for any problems you may encounter.
Contact: WhatsApp: +86 18326898898
Please provide your product model and a detailed description of the issue when contacting support to facilitate a quicker resolution.
