HTI HT-203U-i Smart Mobile Phone Thermal Imager Operation Manual

1. Product Overview

The HTI HT-203U-i is a mobile infrared thermal imager designed to connect to Android smartphones via a Type-C or Micro USB interface. It enables infrared observation and temperature measurement functions through a dedicated mobile application. This device is ideal for applications such as electrical repair, outdoor observation, people search and rescue, circuit detection, and hotel camera detection.

Key Features:

• High Pixel Resolution: 256*192
• Wide Temperature Range: -15°C to 550°C (5°F to 1022°F)
• High Precision: ±2°C / ±2%
• High Frame Rate: ≤25Hz
• 8 Types of Color Palettes
• Thermal Sensitivity: ≤40mk
• Compact and Handheld Design

2. Precautions

Please read the following information carefully before using your device to ensure your safety and prevent damage to the device.

• Do not expose the product to direct sunlight or other high-intensity radiation sources.
• Do not touch or collide the detector window and lens with hands or other objects.
• Do not touch the device and USB interface with wet hands.
• Do not scrub your equipment with thinner or harsh chemicals.
• Pay attention to preventing static electricity.
• Do not disassemble the equipment. If any fault occurs, contact professional personnel for repair.

3. Setup and Equipment Connection

To use the HT-203U-i thermal imager, you need to download and install the companion mobile application and ensure your phone meets the requirements.

3.1 App Download

Download the "HT-203U-i Smart Thermal" APP. You can scan the QR code below to download the application:

3.2 Phone Requirements

• Ensure that your phone has OTG (On-The-Go) function.
• Ensure that the OTG function is turned on in your phone's settings.

3.3 Equipment Connection

The HT-203U-i connects to your Android phone via a Type-C or Micro USB connector. A Micro USB connector is included as an accessory for compatibility.

1. Insert the mobile infrared thermal imager into the USB port (Type-C or Micro USB) of your phone.
2. On the phone screen, a prompt will appear asking to handle the USB Camera.
3. Check the checkbox (e.g., "Always open HT-203U-I Thermal when USB Camera is connected") and click "OK".
4. The software will launch, and the phone screen will display the infrared observation view.

4. Operating Instructions

The mobile application provides various functions for infrared observation and temperature analysis.

4.1 Software Operation Overview

The main functions accessible through the app include:

• Infrared observation
• Infrared temperature measurement and analysis
• Photo and video capture
• Action control and parameter settings for the thermal imager

4.2 Gallery, Photo, and Video

• Gallery: Click the gallery icon to view saved images and videos. Within the picture/video list, you can select items to delete or share.
• Photo: Click the photo icon to save the current infrared image. Saved photos can be viewed in the gallery.
• Video: Click the video icon to start recording. Click it again to stop video recording. Videos are saved in the same location as images.

4.3 Shutter Refresh

Click the shutter refresh icon to refresh the thermal shield, which helps in recalibrating the sensor for accurate readings.

4.4 Temperature Measurement Analysis

Click the temperature measurement analysis icon to access options for different temperature measurement modes:

• Point Temperature Measurement: Displays the central, highest, and lowest temperature points on the screen. You can tap the screen to add user-defined temperature points.
• Line Temperature Measurement Analysis: Drag your fingers to draw a horizontal line on the screen. The app will automatically analyze and display the maximum and minimum temperatures along that line.
• Regional Temperature Measurement Analysis: Drag your fingers to draw a rectangle on the screen. The app will analyze and display the maximum and minimum temperatures within the defined rectangular area.

4.5 Color Palette

Click the color palette icon to open the color palette interface. You can switch between 10 types of color palettes to visualize thermal data differently:

• White Hot
• Black Hot
• Iron Hot
• Iron Red
• Red Hot
• Rainbow - 1
• Rainbow - 2
• Rainbow - 3
• Rainbow - 4
• Rainbow - 5

4.6 Temperature Measurement Settings

Click the settings icon to adjust various temperature measurement parameters:

• Temperature Unit: Switch between Celsius (°C) and Fahrenheit (°F).
• Measuring Range: Adjust the temperature measurement range.
• High/Low Temperature Warning: Set thresholds for high and low temperature alarms. The warning values are automatically saved when switching ranges.
• Emissivity: Adjust the emissivity value for accurate temperature readings based on the material being measured.
• Temperature Measurement Distance: Input the distance to the object for improved accuracy.
• Image Control: Adjust brightness, contrast, noise reduction, and detail enhancement.

4.7 General Settings

Click the settings icon to access general application settings:

• System Camera: Toggle the use of the phone's system camera.
• Watermark: Enable or disable watermarks on captured images.
• Language Selection: Choose between Chinese, English, or Russian.
• Operation Instructions: Access the in-app instructions.
• Version: View the application version information.

5. Maintenance

To ensure the longevity and proper functioning of your HT-203U-i thermal imager, follow these maintenance guidelines:

• Keep the device clean. Use a soft, dry cloth for cleaning.
• Do not use thinner or abrasive cleaners on the device, especially on the lens and detector window.
• Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
• Protect the lens and detector window from physical impact or scratches.

6. Troubleshooting

If you encounter any issues with your HT-203U-i thermal imager, consider the following:

• Device not recognized: Ensure your phone's OTG function is enabled and the device is securely connected to the USB port. Try restarting the app or your phone.
• Inaccurate temperature readings: Check the emissivity settings for the material you are measuring. Ensure the lens is clean and free from obstructions.
• App not functioning correctly: Ensure you have the latest version of the "HT-203U-i Smart Thermal" app installed. Try clearing the app's cache or reinstalling it.
• Any other faults: Do not attempt to disassemble or repair the equipment yourself. Contact professional personnel or the manufacturer for assistance.

7. Technical Specifications

For a comprehensive list of technical parameters, please refer to the official user manual PDF available at: HT-203U-i User Manual (PDF)

8. User Tips

• Model Verification: Some users may confuse models like "203U" and "203U-i". Always verify that you have the correct "HT-203U-i" model for optimal compatibility and feature set as described in this manual.
• OTG Function: If the device is not detected, double-check your phone's settings to ensure the USB OTG function is enabled. This is a common requirement for external USB devices.
• App Permissions: Grant all necessary permissions to the "HT-203U-i Smart Thermal" app upon installation to ensure full functionality, including camera access and storage.
• Emissivity Adjustment: For the most accurate temperature readings, especially on different surfaces (e.g., shiny metals vs. painted surfaces), remember to adjust the emissivity setting in the app.

9. Warranty and Support

For any product faults, technical support, or warranty claims, please contact the manufacturer or your point of purchase. Do not attempt to repair the device yourself, as this may void the warranty and cause further damage.