1. Introduction
This manual provides comprehensive instructions for the safe and effective use of the Mastech MS 6520B Infrared Thermometer. This non-contact device is designed for accurate temperature measurement across various applications. Please read this manual thoroughly before operating the device.
Figure 1: Front view of the Mastech MS 6520B Infrared Thermometer, showing the display and control buttons.
2. Safety Information
To ensure safe operation and prevent damage to the device, observe the following precautions:
- Laser Safety: Do not point the laser directly at eyes or indirectly off reflective surfaces. The laser is for targeting purposes only.
- Environmental Conditions: Do not use the device in environments with explosive gas, steam, or dust. Avoid extreme temperatures and high humidity.
- Electromagnetic Fields: Keep the device away from strong electromagnetic fields, which may affect accuracy.
- Water Immersion: Do not immerse the device in water or other liquids. It is not waterproof.
- Maintenance: Refer to the maintenance section for proper cleaning and care.
3. Product Features and Components
The Mastech MS 6520B is a handheld infrared thermometer featuring a clear LCD display and intuitive controls.
Key Features:
- Non-contact infrared temperature measurement
- Wide temperature range: -20°C to 500°C (-4°F to 932°F)
- Selectable °C/°F units
- Built-in laser pointer for accurate targeting
- Backlight display for low-light conditions
- Data Hold function
- MAX/MIN/AVG temperature display modes
- Low battery indication
Component Identification:
- Infrared Sensor
- Laser Pointer Aperture
- LCD Display
- Measurement Trigger
- Mode Button (M)
- Unit Selection Button (°F/°C)
- Backlight Button
- Laser On/Off Button
- Battery Compartment
Figure 2: Detailed view of the MS 6520B display and control buttons.
4. Setup
4.1 Battery Installation
The Mastech MS 6520B requires one 9V 6F22 battery for operation.
- Locate the battery compartment cover at the bottom of the handle.
- Gently slide or open the battery compartment cover.
- Connect a new 9V 6F22 battery to the battery connector, ensuring correct polarity.
- Place the battery into the compartment and close the cover securely.
Figure 3: The battery compartment of the MS 6520B, showing the 9V battery connection.
5. Operating Instructions
5.1 Taking a Measurement
- Point the infrared sensor towards the target object.
- Press and hold the measurement trigger. The display will show the real-time temperature reading.
- Release the trigger to hold the last measured temperature on the display (Data Hold). The device will automatically power off after a period of inactivity to conserve battery.
5.2 Distance to Spot Ratio (D:S)
The MS 6520B has a Distance to Spot Ratio (D:S) of 10:1. This means that at a distance of 10 units from the target, the measurement spot diameter will be 1 unit. For accurate readings, ensure the target area is larger than the measurement spot size.
Figure 4: Side view illustrating the 10:1 Distance to Spot Ratio for the infrared thermometer.
5.3 Emissivity
The device has a fixed emissivity setting of 0.95, which is suitable for most organic materials, painted surfaces, and many non-metallic objects. For highly reflective surfaces, readings may be less accurate.
5.4 Unit Selection (°C/°F)
Press the °F/°C button to toggle between Celsius and Fahrenheit temperature units.
5.5 Backlight
Press the Backlight button to turn the display backlight on or off. This feature is useful in dimly lit environments.
5.6 Laser Pointer
Press the Laser button to activate or deactivate the laser pointer. The laser helps in precisely identifying the measurement target.
5.7 MAX/MIN/AVG Modes
Press the M (Mode) button to cycle through different display modes while the trigger is held down:
- MAX: Displays the maximum temperature recorded during the current measurement session.
- MIN: Displays the minimum temperature recorded during the current measurement session.
- AVG: Displays the average temperature recorded during the current measurement session.
6. Maintenance
6.1 Cleaning
- Clean the device casing with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Carefully clean the infrared lens with a soft cloth or cotton swab, slightly moistened with water or rubbing alcohol. Avoid scratching the lens.
6.2 Storage
When not in use, store the thermometer in a dry, cool place, away from direct sunlight and extreme temperatures. If storing for an extended period, remove the battery to prevent leakage.
6.3 Battery Replacement
Replace the 9V battery when the low battery indicator appears on the display to ensure accurate readings and proper device function. Refer to Section 4.1 for battery installation instructions.
7. Troubleshooting
If you encounter issues with your Mastech MS 6520B, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Dead or incorrectly installed battery | Replace the 9V battery or ensure it is correctly installed. |
| Inaccurate readings |
|
|
| Display shows "ERR" | Temperature outside measurement range | Ensure the target temperature is within -20°C to 500°C. |
8. Specifications
The following table outlines the technical specifications for the Mastech MS 6520B Infrared Thermometer:
| Parameter | Specification |
|---|---|
| Temperature Range | -20°C to 500°C (-4°F to 932°F) |
| Accuracy | ±(1.5% + 2°C) or ±(1.5% + 4°F) |
| Temperature Resolution | 0.1°C / 0.1°F |
| Repeatability | ±1°C |
| Distance to Spot Ratio (D:S) | 10:1 |
| Emissivity | 0.95 (Fixed) |
| Response Time | 500 Milliseconds |
| Power Supply | 1x 9V 6F22 Battery |
| Product Size | 142mm x 92mm x 47mm (5.6" x 3.6" x 1.85") |
| Product Weight | 231 g (0.31 lb) |
| Certifications | CE, RoHS |
Figure 5: Detailed specifications table for the Mastech MS 6520B.
9. Warranty and Support
For warranty information, technical assistance, or customer support regarding your Mastech MS 6520B Infrared Thermometer, please refer to the official Mastech website or contact your local distributor. Keep your purchase receipt as proof of purchase.
