Introduction
This user manual provides comprehensive instructions for the safe and effective operation of the BENETECH GM-550 Infrared Thermometer. This device is designed for non-contact temperature measurement, offering quick and accurate readings for various applications. Please read this manual thoroughly before using the device to ensure proper functionality and to prevent damage.
Safety Information
Always observe the following safety precautions:
- Do not point the laser directly at eyes or indirectly off reflective surfaces.
- Do not use the device in environments with explosive gas, vapor, or dust.
- Avoid exposing the device to extreme temperatures, humidity, or direct sunlight.
- Keep the device away from strong electromagnetic fields.
- Do not attempt to disassemble or modify the device. Refer all servicing to qualified personnel.
- Use only the specified battery type.
Product Overview
The BENETECH GM-550 is a handheld infrared thermometer featuring a laser pointer for precise targeting, a clear LCD display, and user-friendly controls. It is ideal for measuring surface temperatures of objects that are difficult or unsafe to contact.
Figure 1: BENETECH GM-550 Infrared Thermometer. This image shows the overall design of the thermometer, highlighting its ergonomic grip and the digital display. The display shows a temperature reading of 27.6 degrees Celsius.
Figure 2: Close-up of the LCD Display and Control Buttons. This image provides a detailed view of the thermometer's screen, showing the temperature reading, battery indicator, and mode icons. Below the screen are the C/F button for unit conversion and the backlight button.
Figure 3: Front View of the Infrared Sensor and Laser. This image focuses on the front end of the thermometer, clearly showing the infrared sensor lens and the laser aperture, which is used for precise targeting of the measurement area.
Figure 4: Side View with Battery Compartment. This image displays the side of the thermometer, with the handle partially open to reveal the battery compartment, indicating where the batteries are inserted.
Setup
Battery Installation
- Locate the battery compartment on the handle of the thermometer (refer to Figure 4).
- Gently open the battery cover.
- Insert the required batteries, ensuring correct polarity (+/-). The device typically uses 9V batteries.
- Close the battery cover securely.
Powering On/Off
- To power on, simply press the measurement trigger. The device will automatically power off after a period of inactivity to conserve battery.
Operating Instructions
Taking a Measurement
- Hold the thermometer by the handle and point the infrared sensor towards the target object.
- Press and hold the measurement trigger. The laser pointer will activate to help aim at the desired measurement spot.
- The temperature reading will be displayed on the LCD screen instantly.
- Release the trigger to hold the reading on the display. The "HOLD" icon will appear.
Changing Temperature Units (Celsius/Fahrenheit)
- While the device is on, press the "C/F" button located below the display to toggle between Celsius (°C) and Fahrenheit (°F).
Backlight and Laser Control
- Press the light bulb icon button to turn the LCD backlight on or off.
- The laser pointer typically activates automatically when the trigger is pressed.
Distance to Spot Ratio (D:S)
The GM-550 has a D:S ratio of 12:1. This means that at a distance of 12 units from the target, the measurement spot diameter will be 1 unit. For accurate readings, ensure the target area is larger than the spot size.
Example: At 12 inches distance, the measurement spot is 1 inch in diameter. At 12 feet distance, the measurement spot is 1 foot in diameter.
Emissivity
The GM-550 has a fixed emissivity of 0.95. This value is suitable for most organic materials, painted surfaces, and many non-metallic surfaces. For highly reflective surfaces (e.g., polished metals), readings may be less accurate.
Maintenance
Cleaning the Device
- Use a soft, damp cloth to clean the casing. Do not use abrasive cleaners or solvents.
- For the lens, use a soft cloth or cotton swab with a small amount of optical lens cleaner. Avoid touching the lens directly.
Battery Replacement
- When the low battery indicator appears on the display, replace the batteries promptly to ensure accurate readings.
- Follow the battery installation steps outlined in the "Setup" section.
Storage
- Store the device in a cool, dry place when not in use.
- Remove batteries if storing for extended periods to prevent leakage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display/Device won't turn on | Dead or incorrectly installed batteries. | Check battery polarity or replace batteries. |
| Inaccurate readings |
|
|
| Laser not working | Laser function disabled or malfunction. | If no dedicated laser button, contact support. |
Specifications
| Feature | Detail |
|---|---|
| Model | GM-550 |
| Temperature Range | -50°C to 550°C (-58°F to 1022°F) |
| Accuracy | ±1.5% or ±1.5°C (±2.7°F) (whichever is greater) |
| Distance Spot Ratio (D:S) | 12:1 |
| Emissivity | 0.95 (fixed) |
| Response Time | 500 ms |
| Spectral Response | 8-14 µm |
| Power Source | 9V Battery |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Storage Temperature | -20°C to 60°C (-4°F to 140°F) |
| Dimensions | (Approximate) 153 x 101 x 43 mm |
| Weight | (Approximate) 147.5g (without battery) |
| Special Feature | Non CondenSED |
| Display Type | LCD |
| Connectivity Technology | Infrared |
Warranty and Support
BENETECH products are designed for reliability and performance. For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official BENETECH website.
Please retain your purchase receipt as proof of purchase for warranty claims.
