1. Introduction
The ANENG TH203 series of infrared thermometers is designed to measure the surface temperature of opaque objects without contact. Its optical components sense reflected and transmitted energy, focusing it onto a detector. This allows for quick and accurate measurement of surface temperatures for various high-temperature, toxic, or hard-to-reach objects.
The thermometer comprises an optical system, a photoelectric sensor, a signal amplifier, a signal processing circuit, and an LCD display. The optical system converges infrared energy radiated from the object's surface to the photoelectric sensor, which converts the energy into an electrical signal. This signal is then processed and displayed on the LCD.
Important Safety Note: This product is an industrial thermometer. It is not intended for measuring the temperature of humans (adults, children, infants) or animals.
Image: Warning against using the thermometer for human or animal temperature measurement.
2. Product Overview
The ANENG TH203 features a black and red industrial design, providing a comfortable grip. It is equipped with a VA reverse color screen for clear visibility in various environments.
Image: Detailed view of the ANENG TH203 thermometer, showing its features and ergonomic design.
2.1. Display Symbols
Image: Diagram explaining the various symbols and indicators on the thermometer's display screen.
- Low temperature alarm symbol: Indicates when the measured temperature is below the set low threshold.
- Data retention symbol: Shows that the current measurement is held on the display.
- High temperature alarm symbol: Indicates when the measured temperature exceeds the set high threshold.
- Temperature main display: Primary area for temperature readings.
- Max measurement symbol: Displays the maximum temperature recorded during a measurement session.
- Read data symbol: Indicates data is being read.
- Battery prompt symbol: Shows current battery level.
- Laser positioning symbol: Indicates the laser is active for targeting.
- Celsius (°C) / Fahrenheit (°F): Units of temperature measurement.
- Secondary display area: Additional information display.
- Emissivity symbol: Displays the current emissivity setting.
3. Setup
3.1. Battery Installation
- Locate the battery compartment cover on the handle of the thermometer.
- Open the battery compartment.
- Insert two AAA batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.
The device requires 2x AAA batteries (not included with shipment).
Video: Demonstration of battery installation and basic operation.
4. Operating Instructions
4.1. Basic Measurement
- Point the thermometer at the target object.
- Pull and hold the trigger button. The laser will activate, indicating the measurement area.
- The temperature will be displayed on the VA reverse color screen in real-time.
- Release the trigger to hold the current reading on the display (Data Retention).
Image: The ANENG TH203 thermometer in action, demonstrating its non-contact measurement with laser targeting.
4.2. Object Distance Ratio (D:S)
The thermometer has an object distance 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 spot is within the field of view of the thermometer.
Image: Explanation of the 12:1 Distance-to-Spot ratio for precise measurements.
4.3. Emissivity Adjustment
Emissivity (ε) is a measure of an object's ability to emit infrared energy. Different materials have different emissivity values. For accurate measurements, adjust the emissivity setting on the thermometer to match the target material. The default emissivity is 0.95.
- Press the 'MODE' button to cycle through settings until 'E' (emissivity) is displayed.
- Use the up/down arrow buttons to adjust the emissivity value.
Refer to the table below for common emissivity values:
Image: Table showing recommended emissivity values for various materials.
4.4. Unit Switching (°C/°F)
To switch between Celsius (°C) and Fahrenheit (°F):
- Press the °C/°F button (usually located near the display) to toggle between the two units.
4.5. High/Low Temperature Warning
The thermometer features high and low temperature alarm settings. When the measured temperature exceeds the set high value or falls below the set low value, a red indicator light will turn on to alert you.
- Long press the 'MODE' key to enter the high/low temperature alarm setting mode.
- Short press 'MODE' to select between high (HI) and low (LO) alarm settings.
- Use the up/down arrow buttons to adjust the desired temperature threshold.
Image: Visual representation of high and low temperature alarm functions.
4.6. Multi-point Laser Positioning
The multi-point laser positioning feature provides precise targeting for accurate measurements.
4.7. Applications
The ANENG TH203 is suitable for a variety of industrial and general-purpose temperature measurement scenarios:
- Industrial temperature measurement (e.g., machinery, furnaces)
- Food temperature (e.g., cooking surfaces, refrigeration)
- Electrical box inspection (e.g., checking for overheating wires)
- Automotive engine inspection (e.g., identifying hot spots)
- Refrigerator temperature monitoring
- Kitchen frying temperature
Image: Examples of various applications for the infrared thermometer.
5. Maintenance
5.1. Cleaning
To ensure accurate readings and prolong the life of your thermometer, keep the lens clean. Use a soft, damp cloth to wipe the device. Do not use abrasive cleaners or immerse the device in water.
5.2. Battery Replacement
When the low power prompt appears on the display, replace the AAA batteries as described in the Setup section (3.1).
6. Troubleshooting
- Product not operating properly: If the product is not operating as expected, please provide a detailed video of the issue to ANENG customer service. They will assist in finding a solution.
- Quality issues: In case of quality problems not caused by 'man-made damage', contact customer service for replacement or refund options.
- Artificially damaged product: This device requires a certain degree of electrical knowledge for proper use. Incorrect operation or artificial damage may void warranty. Contact customer service for assistance.
- High temperature in electrical wires: If the thermometer detects excessively high temperatures in electrical wires, they may need to be replaced to prevent hazards.
Image: After-sales support and troubleshooting guidelines.
7. Specifications
| Feature | Specification |
|---|---|
| Measuring Range (°C) | -50°C to 600°C |
| Measuring Range (°F) | -58°F to 1112°F |
| Object Distance Ratio (D:S) | 12:1 |
| Emissivity | Default 0.95, adjustable |
| Multi-point Laser Positioning | Yes |
| Auto Power Off | Yes |
| Low Power Prompt | Yes |
| Data Retention | Yes |
| Battery | AAA battery X2 (not included) |
| Screen | VA reverse color screen |
| °C/°F Adjustable | Yes |
| Highest Temperature Display | Yes |
| Lowest Temperature Display | Yes |
| High/Low Temperature Warning | Yes |
| Maximum Value Display | Yes |
| Weight | 106g |
| Material | ABS |
| Display Size | 1.9 Inches & Under |
| Style | Handheld |
| Certification | CE |
7.1. Dimensions and Package Contents
- Product Dimensions: Approximately 14.2cm (5.59in) x 8.9cm (3.5in) x 4.55cm (1.79in)
- Package Weight: 0.171 kg
- Package Dimensions: 17cm x 10cm x 5cm
Package Contents:
- 1 * ANENG TH203 Digital Infrared Thermometer
- 1 * Packaging box
- 1 * User Manual (PDF available online: View PDF)
Image: The ANENG TH203 thermometer, its packaging, and a visual of the included user manual.
8. User Tips
- Maintain Proper Distance: For the most accurate readings, ensure you are within the 12:1 distance-to-spot ratio. Measuring too far away can lead to less precise results.
- Avoid Steam and Smoke: When measuring the temperature of liquids, especially boiling ones, do not let smoke or water vapor come into contact with the temperature sensing area. This can affect accuracy. Aim at an angle of approximately 45°C to 60°C to avoid direct steam interference.
- Adjust Emissivity: Always adjust the emissivity setting to match the material you are measuring. Using the default 0.95 for all surfaces may lead to inaccurate readings, especially on highly reflective or non-metallic surfaces.
- Laser for Targeting Only: The laser is for targeting the measurement area. It does not affect the temperature reading itself. Ensure the laser dot is within the area you wish to measure.
- Check Battery Life: Pay attention to the low power prompt. A weak battery can sometimes lead to inconsistent readings.
Image: Correct method for measuring liquid temperature, avoiding steam interference.
9. Warranty and Support
For any questions regarding product use, quality issues, or if the product is not operating properly, please contact ANENG customer service. They are available to provide assistance and solutions.
If you encounter any issues, providing a detailed video of the problem can help expedite the resolution process.