1. Introduction
The BTMETER BT-1880 is a professional non-contact infrared thermometer designed for accurate and safe high-temperature measurements in industrial, mechanical, and HVAC applications. This device allows for quick and precise temperature readings without physical contact, making it ideal for measuring hot, hazardous, or hard-to-reach surfaces. It features a wide temperature range, adjustable emissivity, and various measurement modes to suit diverse needs.
2. Safety Information
- Laser Safety: This device uses a Class 2 laser product (wavelength 630-670nm, output <1mW). Do not stare into the laser beam or point it at people or animals. Avoid direct eye exposure.
- General Safety:
- Do not use the device near explosive gas, vapor, or dust.
- Do not immerse the unit in water.
- Avoid exposing the device to extreme temperatures or high humidity for prolonged periods.
- Ensure the measurement target is larger than the measurement area of the thermometer for accurate readings.
- To maintain accuracy and safety, avoid right-angle measurements.
- Intended Use: This thermometer is designed for inanimate objects. Temperature measurement for humans or animals may result in lower readings.
3. Package Contents
Upon opening the package, please verify that all items are present and in good condition:
- BTMETER BT-1880 Infrared Thermometer
- Carrying Pouch
- User Manual
- (Note: 9V battery is not included and must be purchased separately)
4. Product Overview
4.1 Device Layout and Display
4.2 Button Descriptions
- Trigger: Press to initiate measurement. Release to hold the reading.
- Laser Pointer Button (Triangle with Laser Icon): Press once to turn on the laser pointer, press again to turn it off.
- Lamp Button (Lightbulb Icon): During measurement, press to turn on the flashlight.
- MODE Button: Cycles through options: MAX (Maximum), AVG (Average), MIN (Minimum), DIF (Difference), LAL (Low Alarm), HAL (High Alarm), REC (Record).
- BL/UP Button: In emissivity or alarm temperature setting mode, use to increase the value. In measurement mode, press to turn on/off the backlight.
- °C/DN Button: In emissivity or alarm temperature setting mode, use to decrease the value. In measurement mode, press to select between Celsius (°C) and Fahrenheit (°F).
5. Setup
5.1 Battery Installation
The BT-1880 requires a 9V battery (not included). To install the battery:
- Locate the battery compartment at the bottom of the handle.
- Use a screwdriver to open the battery compartment cover.
- Connect the 9V battery to the battery clip, ensuring correct polarity.
- Place the battery inside the compartment and close the cover securely with the screw.
6. Operating Instructions
6.1 Taking a Measurement
- Point the thermometer at the target surface.
- Press and hold the Trigger button. The laser pointer will activate (if enabled) to indicate the measurement area.
- The temperature reading will be displayed on the LCD screen.
- Release the Trigger button to hold the reading on the display.
6.2 Distance to Spot Ratio (D:S)
The BT-1880 has a Distance to Spot (D:S) ratio of 50:1. This means that at a distance of 50 units from the target, the measurement spot diameter will be 1 unit. For accurate measurements, ensure the target is at least twice as large as the measurement area. The further you are from the object, the larger the area being measured.
6.3 Emissivity Adjustment
Emissivity (ε) is a measure of an object's ability to emit infrared energy. Different materials have different emissivity values. For accurate readings, adjust the emissivity setting (0.1 to 1.0) on the thermometer to match the material being measured. The default emissivity is 0.95, which is suitable for many common surfaces.
To adjust emissivity:
- Press the MODE button until "E" (Emissivity) appears on the display.
- Use the BL/UP and °C/DN buttons to adjust the emissivity value.
- Press the MODE button again to confirm and exit.
Common Object Emissivity Values:
6.4 Measurement Modes
Press the MODE button to cycle through the following measurement options:
- MAX: Displays the maximum temperature measured during a scan.
- AVG: Displays the average temperature measured during a scan.
- MIN: Displays the minimum temperature measured during a scan.
- DIF: Displays the difference between the maximum and minimum temperatures measured.
- LAL (Low Alarm): Set a low-temperature alarm threshold.
- HAL (High Alarm): Set a high-temperature alarm threshold.
- REC (Record): Records temperature data.
When an alarm threshold (LAL or HAL) is exceeded, the device will flash an alarm.
7. Specifications
| Feature | Specification |
|---|---|
| Theory | Infrared Thermometer |
| Display Type | DIGITAL |
| Power Type | 9V Battery |
| Model Number | BT-1880 |
| Certification | CE |
| Origin | Mainland China |
| Style | Handheld |
| Brand Name | BTMETER |
| Is Smart Device | No |
| Use | Industrial |
| Display Size | 1.9 Inches & Under |
| Temperature Range | -50°C to 1880°C (-58 to 3416°F) |
| Distance to Spot Ratio | 50:1 |
| Emissivity | 0.1~1.0 (Adjustable) |
| Resolution | 0.1℃(0.1℉) <1000, 1℃(1℉) >1000 |
| Repeatability | 1% of reading or 1℃ |
| Response Time | <250ms, 95% response |
| Spectral Response | 8-14um |
| Operating Temperature | 0°C to 40°C (32 to 104°F) |
| Storage Temperature | -10~50°C (-14~122°F) without battery |
| RH Size | 212X95X62 mm |
| Display Area | 36X47 mm |
| Relative Humidity | Operating: 10-95%RH |
| Battery Life | Laser mode: 12 hours |
| Laser Type | Double laser target |
Accuracy:
- ±3% of reading ±3℃, -50℃ to 0℃ (-58 to 320F)
- ±2% of reading ±2℃, 0℃ to 100℃ (32 to 2120F)
- ±3% of reading ±3℃, ≥100℃ (2120F)
8. Maintenance
- Cleaning the Lens: The sensor lens is the most delicate part of the thermometer. Clean it carefully using a soft cloth or cotton swab with water or medical alcohol.
- Cleaning the Casing: Clean the device casing with a damp sponge or soft cloth and mild soap. Do not use abrasive cleaners or solvents.
- Battery Replacement: Replace the 9V battery when the low power indicator appears on the display to ensure continued accurate operation.
- Storage: When not in use for extended periods, remove the battery and store the device in its carrying pouch in a cool, dry place, away from direct sunlight and extreme temperatures.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| "Hi" or "Lo" displayed | Temperature is outside the measurement range. | Ensure the target temperature is within -50°C to 1880°C (-58°F to 3416°F). |
| Inaccurate readings | Incorrect emissivity setting, dirty lens, or target too small/far. | Adjust emissivity, clean the lens, ensure D:S ratio is respected. Allow 30 minutes for the thermometer to stabilize if moving between environments with large temperature differences. |
| Device does not turn on | Low or dead battery, or incorrect battery installation. | Replace the 9V battery, ensuring correct polarity. |
10. User Tips
- For best accuracy, allow the thermometer to acclimate to the ambient temperature of the measurement environment for at least 30 minutes before use.
- Always ensure the target area is clear of obstructions and steam, as these can affect infrared readings.
- When measuring highly reflective surfaces, consider applying a piece of masking tape or flat black paint to the surface and measuring the temperature of that spot. Remember to adjust emissivity accordingly.
11. Warranty and Support
This BTMETER product is designed for reliability and durability. For any questions, technical support, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
