HYTAIS Non-Contact Infrared Thermometer

1. Introduction

This series of infrared thermometers is designed for quick and accurate non-contact temperature measurement of opaque object surfaces. The device's optical system collects infrared energy emitted, reflected, and transmitted by the object, focusing it onto a detector. This energy is then converted into an electrical signal, processed, and displayed as a temperature reading on the LCD. It is ideal for measuring high-temperature, toxic, or hard-to-reach surfaces in industrial settings.

The thermometer comprises an optical system, a photoelectric sensor, a signal amplifier, a signal processing circuit, and an LCD display.

2. Safety Information

2.1. Warnings

• Laser Safety: Do not point the laser directly at eyes or indirectly through reflective surfaces towards eyes.
• Measurement Limitations: The thermometer cannot measure through transparent surfaces (e.g., glass, plastic). It will measure the surface temperature of the transparent object itself.
• Environmental Factors: Steam, dust, smoke, or other particles can obstruct the lens, affecting measurement accuracy.
• Not for Human/Animal Use: This device is not intended for measuring the temperature of humans or animals.

2.2. Cautions

• Electromagnetic Fields (EMF): Protect the thermometer from strong EMF generated by equipment like arc welders and induction heaters.
• Thermal Shock: Avoid large or sudden temperature changes. If the environment changes significantly, allow the thermometer 30 minutes to stabilize before use.
• High Temperatures: Do not place or bring the thermometer close to high-temperature objects.

3. Product Features & Components

The HYTAIS Infrared Thermometer offers a range of features for efficient and accurate temperature measurement:

• 0.5-second quick measurement
• Laser positioning for precise targeting
• One-touch response
• Adjustable emissivity (0.1-1.00)
• High-low temperature alert
• Celsius/Fahrenheit switch
• LCD display with backlight
• Auto power off
• Data hold function

3.1. Component Overview

• Laser Emission Point: Emits the targeting laser.
• Temperature Sensing Area: The infrared sensor that detects temperature.
• Measurement Trigger: Activates temperature measurement.
• Battery Compartment: Houses the AAA batteries.
• LCD Display with Backlight: Shows temperature readings and settings.
• °C/°F Button: Toggles between Celsius and Fahrenheit units.
• MODE Button: Cycles through function settings (Emissivity, Max/Min, High/Low Alarms).
• Up/Down Arrows: Adjust settings (e.g., emissivity, alarm thresholds).
• Infrared Laser Switch (part of arrow buttons): Toggles the laser on/off.

4. Setup Instructions

4.1. Battery Installation

1. Locate the battery compartment on the handle of the thermometer.
2. Open the battery door.
3. Insert two 1.5V AAA batteries, ensuring correct polarity (+/-).
4. Close the battery door securely.

4.2. Initial Power-On

After installing the batteries, pull the measurement trigger to power on the device. The LCD display will light up, indicating the thermometer is ready for use.

5. Operating Instructions

5.1. Basic Measurement

1. Point the thermometer's temperature sensing area towards the target object.
2. Pull and hold the measurement trigger. The laser pointer will activate (if enabled) to help aim.
3. The temperature reading will appear on the LCD.
4. Release the trigger to hold the current reading on the display. The device will automatically power off after a few seconds of inactivity.

5.2. Distance-to-Spot Ratio (D:S)

The D:S ratio for this thermometer is 12:1. This means that as the distance (D) between the thermometer and the target increases, the diameter of the measurement spot (S) also increases. For accurate readings, ensure the target object is larger than the measurement spot. For precise measurements, the target should be at least twice the diameter of the spot.

5.3. Function Settings (MODE Button)

Pull the trigger and release it. Then, press and hold the MODE button for 3 seconds to enter the settings menu. Short presses of the MODE button will cycle through the following options displayed at the bottom of the LCD:

• E (Emissivity): Displays the current emissivity value.
• MAX: Displays the maximum measured temperature.
• Hi: Displays the set high-temperature alarm value.
• LOW: Displays the set low-temperature alarm value.

5.4. Adjusting Emissivity

Emissivity (E) describes how effectively a surface radiates thermal energy. Most organic materials, painted, or oxidized surfaces have an emissivity of 0.95. The thermometer's default emissivity is 0.95.

1. Pull the trigger and release it.
2. Press and hold the MODE button until 'E' is displayed.
3. Use the Up/Down Arrow buttons (often labeled with °C/°F) to adjust the emissivity value from 0.1 to 1.00.

Emissivity Table for Common Materials

Compensating for Shiny Surfaces

When measuring shiny metal surfaces, readings may be inaccurate. To compensate, cover the surface with opaque adhesive tape or flat black paint (for temperatures below 148°C/300°F). Allow time for the covering to reach the same temperature as the surface, then measure the temperature of the covering.

5.5. Temperature Unit Conversion (°C/°F)

To switch between Celsius (°C) and Fahrenheit (°F):

1. Pull the trigger and release it.
2. Press the °C/°F button (often the left arrow button) to toggle the temperature unit.

5.6. High/Low Temperature Alarms

The thermometer can be set to alert you when the measured temperature exceeds a high limit or falls below a low limit. An indicator light above the display will illuminate when an alarm condition is met.

Setting High Temperature Alarm:

1. Pull the trigger and release it.
2. Press and hold the MODE button, then short press MODE until 'Hi' is displayed. The LCD will show the default high alarm temperature (e.g., 380°C or 600°C depending on model).
3. Use the Up/Down Arrow buttons to set the desired high alarm temperature point.

Setting Low Temperature Alarm:

1. Pull the trigger and release it.
2. Press and hold the MODE button, then short press MODE until 'LOW' is displayed. The LCD will show the default low alarm temperature (e.g., -50°C).
3. Use the Up/Down Arrow buttons to set the desired low alarm temperature point.

5.7. Locating Hot or Cold Spots

To find a hot or cold spot within an area:

1. Aim the thermometer at the outer edge of the area you wish to scan.
2. Slowly move the thermometer up and down, scanning the entire area.
3. Observe the temperature readings to identify the hottest or coldest point.

6. Specifications

7. Maintenance

7.1. Lens Cleaning

The lens is the most delicate part of the thermometer. Handle with care.

1. Use clean compressed air to blow away any loose debris.
2. Gently brush away any remaining tiny particles with a camel hair brush.
3. Carefully wipe the surface with a damp cotton cloth.

Note: Do not use any solvents to clean the plastic lens.

7.2. Shell Cleaning

To clean the exterior casing of the thermometer:

1. Use a wet sponge or a soft cloth.
2. Apply mild soap and water to clean the surface.

Note: Do not immerse the thermometer in water.

7.3. Battery Replacement

When the battery symbol appears on the LCD screen, it indicates that the battery power is low. Replace the two AAA batteries promptly to ensure accurate measurements.

8. Troubleshooting

• Device not turning on: Check battery installation and ensure batteries are not depleted. Replace if necessary.
• Inaccurate readings:
  • Verify the correct emissivity setting for the target material.
  • Ensure the target is larger than the measurement spot (D:S ratio).
  • Check for obstructions (steam, dust) between the thermometer and target.
  • Allow the device to stabilize if there has been a sudden temperature change (thermal shock).
• Laser not working: Check if the laser is enabled via the function buttons.
• Display issues: If the LCD is blank or shows erratic readings, try replacing the batteries.

9. User Tips

• For best accuracy, always hold the thermometer perpendicular to the surface being measured.
• Avoid measuring highly reflective surfaces directly. If unavoidable, use the emissivity compensation method described in Section 5.4.
• Keep the lens clean to prevent dust or smudges from affecting readings.
• When measuring liquids, stir them to ensure a uniform temperature before taking a reading.
• Remember that infrared thermometers measure surface temperature, not internal temperature.

10. Warranty & Support

10.1. Warranty Policy

This HYTAIS product comes with a one-year warranty from the date of purchase.

• Free Repair: During the warranty period, malfunctions occurring under normal use conditions (as specified in this manual) will be repaired free of charge. Proof of purchase (original warranty card and receipt) is required.
• Exclusions: Damages resulting from improper use, natural wear and tear, unauthorized disassembly, self-repair, or accidents are not covered under the free warranty.
• Non-Free Repair: For issues not covered by the free warranty, repair services may be provided at a reasonable charge.
• Professional Repair: All repairs must be performed by authorized professional staff. The warranty will be void if unauthorized disassembly or repair is attempted.

10.2. Additional Resources

For a detailed PDF version of the user manual, please refer to the official document available at: HYTAIS Infrared Thermometer User Manual (PDF).