1. Introduction
The FMSISIGQJ GM-268 Digital Glossmeter is a precision instrument designed for measuring the surface gloss of various materials. It provides accurate and repeatable measurements, making it suitable for applications in floor maintenance, surface cleaning quality control, and the gloss measurement of stone and tile surfaces. This manual provides detailed instructions for the proper setup, operation, maintenance, and troubleshooting of your GM-268 Glossmeter.
2. Safety Information
Please read and understand all safety instructions before operating the device. Failure to follow these instructions may result in damage to the instrument or inaccurate readings.
- Do not expose the instrument to extreme temperatures, humidity, or direct sunlight.
- Avoid dropping or subjecting the instrument to severe impact.
- Keep the measurement aperture clean and free from dust or debris.
- Do not attempt to disassemble or repair the instrument yourself. Refer to qualified service personnel.
- Use only the specified power source or batteries.
3. Product Features
- Precision Measurement: Offers accurate gloss measurement with good repetitiveness.
- Multiple Angles: Supports 20, 60, and 85-degree measurement angles for diverse applications.
- Wide Application: Ideal for floor maintenance, surface cleaning quality control, and gloss measurement of stone and tile.
- Digital Display: Features an LCD digital display for clear and easy-to-read results.
- Compact and Stable: Designed to be small, stable, and simple to operate.
- Direct Reading: Provides immediate gloss values upon placement on the object.
4. Package Contents
Please check the package contents upon receipt to ensure all items are present and undamaged.
- FMSISIGQJ GM-268 Digital Glossmeter
- Calibration Standard Plate
- Cleaning Cloth
- User Manual
- Carrying Case (if included)
5. Device Overview
Figure 1: Front view of the FMSISIGQJ GM-268 Digital Glossmeter. The image shows the device's black casing, a blue backlit LCD screen displaying "60" and "0.00", and a control panel with buttons labeled "MEAS", "DEL", "ANGLE", "CAL", and "RD". The model number "GM-268" is visible below the buttons.
The GM-268 features an intuitive interface with an LCD screen for displaying measurements and status, and several buttons for operation and calibration. Familiarize yourself with the layout before use.
- LCD Display: Shows gloss values, measurement angle, and other operational information.
- MEAS Button: Initiates a measurement.
- DEL Button: Deletes stored data (if applicable).
- ANGLE Button: Cycles through measurement angles (20°/60°/85°).
- CAL Button: Enters calibration mode.
- RD Button: Recalls stored data (if applicable).
6. Setup
6.1. Battery Installation
- Locate the battery compartment cover on the back or bottom of the device.
- Open the cover and insert the required batteries, observing the correct polarity (+/-).
- Close the battery compartment cover securely.
6.2. Powering On/Off
- To power on, press and hold the MEAS button until the LCD display illuminates.
- To power off, press and hold the MEAS button again until the display turns off. The device may also have an auto-off feature after a period of inactivity.
7. Operating Instructions
7.1. Selecting Measurement Angle
The GM-268 supports 20°, 60°, and 85° measurement angles. The appropriate angle depends on the gloss level of the surface being measured:
- 20°: For high gloss surfaces (e.g., highly polished metals, high-gloss paints).
- 60°: For medium gloss surfaces (most common angle for general applications).
- 85°: For low gloss or matte surfaces (e.g., matte paints, textiles).
Press the ANGLE button to cycle through the available measurement angles. The selected angle will be displayed on the LCD screen.
7.2. Taking a Measurement
- Ensure the measurement surface is clean, dry, and free from dust or imperfections.
- Select the appropriate measurement angle using the ANGLE button.
- Place the glossmeter firmly and flatly onto the surface to be measured, ensuring the measurement aperture is completely covered and no ambient light interferes.
- Press the MEAS button. The gloss value will be displayed on the LCD screen.
- Record the reading if necessary. For consistent results, take multiple readings at different points on the surface and calculate an average.
8. Calibration
Regular calibration ensures the accuracy of your glossmeter. Calibrate the device before initial use, after prolonged storage, or if you suspect inaccurate readings.
- Ensure the calibration standard plate is clean and free from dust or scratches. Use the provided cleaning cloth.
- Turn on the glossmeter.
- Press the CAL button to enter calibration mode. The display may show "CAL" or prompt for calibration.
- Place the glossmeter firmly and flatly onto the calibration standard plate, ensuring the measurement aperture aligns with the standard's surface.
- Follow the on-screen prompts (if any) or press the MEAS button to initiate calibration. The device will compare its reading to the known gloss value of the standard.
- Upon successful calibration, the display will indicate "PASS" or return to measurement mode. If calibration fails, clean the standard and the glossmeter's aperture, then repeat the process.
9. Maintenance
9.1. Cleaning
- Regularly clean the measurement aperture with a soft, lint-free cloth or the provided cleaning cloth.
- Wipe the exterior of the device with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Ensure no liquid enters the device.
9.2. Storage
- When not in use, store the glossmeter in its protective carrying case.
- Store in a cool, dry place, away from direct sunlight and extreme temperatures.
- Remove batteries if the device will not be used for an extended period to prevent leakage.
10. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low or dead batteries. Incorrect battery installation. | Replace batteries. Check battery polarity. |
| Inaccurate readings. | Dirty measurement aperture or calibration standard. Device not calibrated. Surface not flat. | Clean aperture and standard. Perform calibration. Ensure firm, flat contact with surface. |
| Calibration fails. | Dirty calibration standard. Incorrect calibration procedure. | Clean calibration standard. Re-read calibration instructions carefully. |
| Display shows error message. | Internal error or measurement out of range. | Turn off and restart the device. If the error persists, contact support. |
11. Specifications
| Model Number | GM-268 |
| Measurement Angles | 20° / 60° / 85° |
| Measurement Range | (Typically 0-1000 GU, specific range may vary by model variant) |
| Precision | Good repetitiveness (as per product description) |
| Display | LCD Digital Display |
| Item Weight | 10.6 ounces (approx. 300g) |
| Package Dimensions | 1.18 x 0.79 x 0.39 inches (30 x 20 x 10 mm) Note: This seems unusually small for a package dimension for a glossmeter. This might be a typo in the source data, possibly referring to a component or internal dimension. Actual device dimensions would be larger. |
| Manufacturer | FMSISIGQJ |
Note: Specifications are subject to change without prior notice. For the most accurate and up-to-date specifications, please refer to the product packaging or manufacturer's official website.
12. Warranty and Support
The FMSISIGQJ GM-268 Digital Glossmeter comes with a standard manufacturer's warranty. Please refer to the warranty card included in your package for specific terms and conditions, including the warranty period and coverage details.
For technical support, service, or inquiries regarding your product, please contact FMSISIGQJ customer service through their official website or the contact information provided with your purchase. Please have your model number (GM-268) and purchase date ready when contacting support.
