ANENG TH202 Infrared Thermometer User Manual

1. Introduction

This series of infrared thermometers is designed to measure the surface temperature of opaque objects without direct contact. The device's optical components sense the reflected and transmitted infrared energy emitted by objects, collecting this energy onto a photoelectric sensor. This sensor converts the energy into corresponding electrical signals, which are then processed and displayed on an LCD screen. This non-contact method is ideal for quickly measuring the surface temperature of various high-temperature, toxic, or hard-to-reach objects.

The thermometer consists of an optical system, photoelectric sensor, signal amplifier, signal processing circuit, and LCD display. The optical system gathers the infrared energy radiated from the surface of an object to a photoelectric sensor, which converts the energy into corresponding electrical signals. The signals are then converted into readings and displayed on an LCD through a signal amplifier and signal processor circuit.

2. Safety Warnings and Precautions

2.1. Warning:

• To avoid potential harm to users, please read and follow the instructions below.
• Do not aim the laser directly at eyes or indirectly at eyes through reflective surfaces when using this device.
• The measuring instrument cannot accurately measure through transparent surfaces such as glass or plastic. The value displayed will be the surface temperature of the transparent object itself, not the object behind it.
• Steam, ash layers, smoke, or other airborne particles can obstruct the instrument's lens, affecting measurement accuracy.

2.2. Attention:

• To prevent damage to the thermometer or the device being tested, protect them from the following:
• Electromagnetic fields (EMF) generated by arc welding machines and induction heaters.
• Thermal shock: If the thermometer is moved from an environment with a significant or sudden temperature change, allow 30 minutes for the thermometer to stabilize to the new ambient temperature before use.
• Do not place the thermometer near or on high-temperature objects for extended periods.

3. Product Overview

The ANENG TH202 Infrared Thermometer is a robust, industrial-style device designed for comfortable handling and precise measurements. It features a black and red color scheme, a backlit HD screen, and a range of functions for various applications.

3.1. Key Features:

• Maximum Value Display: Shows the highest measured temperature.
• Adjustable Emissivity: Allows for more accurate readings on different surfaces.
• Backlit Bright Screen: Ensures clear visibility of readings in various lighting conditions.
• Infrared Laser Positioning: Provides precise targeting for measurements.
• Smart Circuit Board: Offers stable performance and enhanced user experience.
• High and Low Temperature Alarm: Alerts the user when set temperature thresholds are exceeded.
• °C/°F Adjustable: Switch between Celsius and Fahrenheit units.
• Auto Power Off: Conserves battery life by automatically shutting down after 10 seconds of inactivity.
• Low Power Prompt: Indicates when batteries need replacement.
• Data Retention: Holds the last measurement for easy reading.

3.2. Product Components:

1. Indicator light
2. LCD backlight screen
3. °C/°F Temperature Switching / Upgrading
4. Single press: function switch / Long press: Enter the value settings
5. Laser Positioning Switch/Down
6. Temperature gun handle
7. Laser emission
8. Measuring trigger button
9. Battery compartment cover

• Low temperature alarm symbol: Indicates temperature is below the set low threshold.
• Data retention symbol: Shows that the current reading is held on the screen.
• High temperature alarm symbol: Indicates temperature is above the set high threshold.
• Temperature main display: Primary temperature reading.
• Maximum measurement symbol: Displays the maximum temperature recorded during a continuous scan.
• Read data symbol: Indicates data is being read.
• Battery prompt symbol: Shows battery level.
• Laser positioning symbol: Indicates the laser is active.
• Celsius (°C): Temperature unit.
• Fahrenheit (°F): Temperature unit.
• Secondary display area: Additional information display.
• Emissivity symbol: Shows the current emissivity setting.

4. Setup

4.1. Battery Installation

The ANENG TH202 requires two AAA batteries (not included). To install:

1. Locate the battery compartment cover on the handle (refer to Product Components diagram, item 9).
2. Open the cover.
3. Insert two AAA batteries, ensuring correct polarity (+/-).
4. Close the battery compartment cover securely.

5. Operating Instructions

5.1. Basic Measurement

To take a temperature reading:

1. Point the thermometer at the target object.
2. Pull and hold the measuring trigger button (refer to Product Components diagram, item 8). The laser will activate for precise targeting.
3. The temperature will be displayed on the LCD screen in real-time.
4. Release the trigger to hold the last reading (data retention).

5.2. Function Settings

The key functions are accessed via the 'MODE' button and the up/down arrows (refer to Product Components diagram, items 3, 4, 5).

• Switch Temperature Unit (°C/°F): Short press the '°C/°F' button to toggle between Celsius and Fahrenheit.
• Laser On/Off: The laser is typically activated when the trigger is pulled. Some models may have a dedicated laser switch (refer to Product Components diagram, item 5).
• Set Temperature Value (High/Low Alarm): Long press the 'MODE' key to enter value settings. Use the up/down arrows to adjust the high or low temperature alarm thresholds. When the measured temperature exceeds these values, a red light will turn on to alert you.
• Emissivity Adjustment: The default emissivity is 0.95, which is suitable for most non-metallic surfaces. For more accurate readings on specific materials, you can adjust the emissivity. Long press the 'MODE' button until the emissivity symbol appears, then use the up/down arrows to change the value.

5.3. Measurement Best Practices

• Avoid Steam and Vapor: Do not let smoke or water vapor come into contact with the temperature sensing area. This can significantly affect accuracy.
• Optimal Angle: Keep the measurement angle at approximately 45°C to 60°C relative to the surface for best results.

5.4. Automatic Shutdown

To conserve battery life, the thermometer will automatically shut down after approximately 10 seconds of inactivity.

6. Specifications

6.1. Emissivity Table for Common Materials:

7. Maintenance

To ensure the longevity and accuracy of your ANENG TH202 Infrared Thermometer, follow these maintenance guidelines:

• Cleaning: Use a soft, damp cloth to clean the exterior of the device. Do not use abrasive cleaners or solvents. For the lens, use a soft brush or a clean, dry cloth specifically designed for optical surfaces.
• Storage: Store the thermometer in a dry, cool place, away from direct sunlight and extreme temperatures. If storing for extended periods, remove the batteries to prevent leakage.
• Avoid Impact: Protect the device from drops and impacts, which can damage internal components.

8. Troubleshooting

• Inaccurate Readings: Ensure the measurement area is free from steam, smoke, or dust. Verify the emissivity setting is appropriate for the material being measured. Allow the device to stabilize if moved from a significantly different temperature environment.
• No Display/Device Not Turning On: Check if the batteries are correctly installed and have sufficient charge. Replace batteries if necessary.
• Laser Not Working: Ensure the trigger is pulled and the laser function is enabled (if applicable). Check battery level.
• Alarm Not Triggering: Verify that the high/low temperature alarm thresholds are set correctly in the function settings.

9. User Tips

• Industrial Use Only: This product is an industrial thermometer. It is NOT intended for measuring the temperature of humans (adults, children, or infants) or animals. Using it for medical purposes will yield inaccurate results and is not recommended.
• Versatile Applications: The TH202 is suitable for a wide range of industrial and household applications, including checking electrical boxes, car engine temperatures, kitchen cooking temperatures (e.g., frying oil), refrigerator temperatures, and surface temperatures of LED lamps.

10. Package Contents

The following items are included in your product package:

• 1 x ANENG TH202 Infrared Thermometer
• 1 x Packaging Box
• 1 x User Manual (this document)

11. Warranty and Support

For technical support, troubleshooting assistance, or warranty inquiries, please contact your retailer or the manufacturer directly. Please retain your proof of purchase for any warranty claims.