1. Introduction
The AUTOOL LM55 is a versatile digital temperature clamp meter designed for precise temperature measurement in various applications. It features a high-precision sensor, real-time temperature display, data waveform visualization, and historical data storage. This manual provides essential information for the safe and effective use of your LM55 device.
2. Specifications
The following table outlines the technical specifications of the AUTOOL LM55 Digital Temperature Clamp Meter:
| Feature | Specification |
|---|---|
| Operating Voltage | 4.5V (3 x 1.5V batteries) |
| Operating Current | <30mA |
| Test Range | -50°C to 260°C |
| Temperature Accuracy | ±0.3°C |
| Operating Temperature | -10°C to 70°C |
| Screen Parameters | 0.96-inch LCD screen with backlight (80RGB x 160 dots) |
| Product Dimensions | 180 x 100 x 35mm (7.09 x 3.94 x 1.38 inches) |
| Packaging Dimensions | 125 x 50 x 210mm |
The device features a high-precision temperature sensor, ensuring an error margin within ±0.3°C.
The 0.96-inch TFT color screen provides clear display of information from all angles, with a resolution of 80RGB x 160 dots.
3. Setup
- Unpacking: Carefully remove the LM55 Digital Temperature Clamp Meter from its packaging. Verify that all components are present.
- Battery Installation: The device requires 3 x 1.5V batteries. Locate the battery compartment, typically on the back or side of the unit. Insert the batteries, ensuring correct polarity.
- Power On: Press and hold the power button (usually marked with a power symbol) to turn on the device. The color screen should illuminate.
4. Operating Instructions
The AUTOOL LM55 is designed for user-friendly operation. Follow these steps for accurate temperature measurements and data management.
4.1 Real-time Temperature Measurement
- Power On: Ensure the device is powered on.
- Clamp onto Object: Open the clamp jaws and securely attach the meter to the object or pipe whose temperature you wish to measure. Ensure good contact for accurate readings.
- Read Display: The current temperature will be displayed in real-time on the screen. The measurement range is from -50°C to 260°C.
4.2 Data Waveform Display
The device can display temperature data as a waveform, providing a visual representation of temperature changes over time.
- Access Waveform Mode: Navigate to the "Wave" or "REC" option on the screen using the navigation buttons.
- View Waveform: The screen will show a real-time display of the temperature/time curve.
4.3 History Data Viewing
The LM55 can store up to 8 sets of waveform data, each lasting 150 seconds, allowing users to review past measurements.
- Access History Mode: Navigate to the "Save" or "REC" option on the screen.
- Browse Records: Use the navigation buttons to select and browse through the stored records (e.g., Record_1 to Record_8).
4.4 Unit Switching
You can switch between Celsius (°C) and Fahrenheit (°F) temperature units.
- Access Settings: Navigate to the "Setup" or "Unit" option on the screen.
- Change Unit: Use the navigation buttons to toggle between °C and °F.
4.5 Adjustable Brightness
The screen backlight brightness can be adjusted from 0% to 100% to suit different lighting conditions.
- Access Brightness Settings: Navigate to the "Setup" or "Bright" option on the screen.
- Adjust Brightness: Use the navigation buttons to increase or decrease the backlight intensity.
4.6 Product Demonstration Video
For a visual guide on the operation and features of the AUTOOL LM55, please watch the official product video below:
5. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
- Storage: Store the LM55 in a cool, dry place away from direct sunlight and extreme temperatures. If storing for extended periods, remove the batteries to prevent leakage.
- Battery Replacement: Replace batteries when the low battery indicator appears on the screen to ensure accurate readings and proper device function.
- Sensor Care: Keep the clamp jaws and sensor area clean and free from debris to maintain measurement accuracy.
6. Troubleshooting
- Device does not power on:
- Check battery installation and ensure batteries are not depleted. Replace if necessary.
- Inaccurate temperature readings:
- Ensure the clamp jaws are making good contact with the object. Clean the sensor area if there is any dirt or residue. Verify the operating temperature range of the device is suitable for your environment.
- Screen is dim or unreadable:
- Adjust the screen brightness settings as described in Section 4.5. Check battery level.
- Cannot record or view historical data:
- Ensure you are following the steps in Section 4.3 correctly. The device stores a limited number of records; older records may be overwritten.
7. User Tips
- For consistent readings, ensure the clamp is fully closed around the measurement point.
- When measuring pipes, try to clamp onto a clean, uninsulated section for best thermal transfer.
- Utilize the data waveform display to observe temperature trends over time, which can be useful for diagnosing system performance.
8. Warranty and Support
The AUTOOL LM55 Digital Temperature Clamp Meter comes with a 3-year warranty, ensuring quality and reliability.
For technical support, warranty claims, or further assistance, please contact AUTOOL Direct Store customer service. Refer to your purchase documentation for specific contact details.
