HT-F03B
Forehead Temperature Type
Infrared Thermometer
User Manual
Table of Contents
I. Brief Introduction to the Product ………………..…………………………...... (1)
II. Basic Operating Principle ……………………………………………………… (1)
III. Product Features ………………………………………………………………... (1)
IV. Main Technical Indicators …………………………………………………….. (2)
V. Basic Components and External Form ……………………………………… (2)
VI. Method of Use …………………………………………………………………… (3)
VII. Specifications for Buttons and Display Symbols ……..…………………. (3)
VIII. Settings …………………………………………………………………………. (4)
IX. Cautions ………………………………………………………………………….. (7)
X. Quality Commitment ……………………………………………………………. (7)
XI. List of Accessories …………………………………………………………….. (7)
Cautions for Use of Laser:
This temperature measurement gun has the function of laser indication. When using, please note the following requirements:
1. Never shoot anyone’s eyes directly with the laser.
2. Never use any optical instrument like telescope, etc. to view the laser beam.
3. The laser’s average power is 0.65mW, and its maximum power will not be more than 1mW.
4. There is a label indicating permanent use of the laser on the product.
I. Brief Introduction to the Product
HT-F03B forehead temperature type infrared thermometer (hereinafter called the forehead thermometer for short) is a thermometer that measures the temperature of human body by using the principle of receiving infrared. When using, it is only required to align the detection window with the forehead to measure the body temperature quickly and accurately.
II. Basic Operating Principle
Any object with its temperature higher than the absolute zero will radiate a certain proportion of infrared energy according to its own temperature. The amount of radiation energy and its distribution by wavelength are closely related to the object’s surface temperature. In accordance with this principle, the surface temperature of forehead can be measured accurately, and the accurate body temperature can be determined and shown by offsetting the difference between the surface temperature of forehead and the actual body temperature.
III. Product Features
◆ Specially designed for measuring the forehead temperature, with a dynamic offset for the ambient temperature and forehead temperature.
◆ Exclusively using the Heimann infrared probe for temperature measurement, with a high accuracy of measurement and a more stable performance.
◆ Providing the function of sound notification of higher body temperature.
◆ Capable of storing 32 sets of measurement data.
◆ Backlight LCD digital display.
◆ Providing two temperature modes, i.e., Fahrenheit scale and Celsius scale, for selection.
◆ Providing the function of auto shutdown to save electric power.
◆ Small size, reasonable structure and convenient operation.
◆ Selecting the body-temperature measurement mode to measure the temperature of any object with its temperature less than 100ºC and its emissivity equal to 0.95.
IV. Main Technical Indicators
1. Normal operating conditions:
1) Ambient temperature: 10ºC - 40ºC.
2) Relative humidity: ≤ 85%.
3) Power supply: DC 3V (two AA batteries).
2. Basic dimensions:
87mm × 43mm × 148mm (length × width × height).
3. Weight (net weight): 113g (not including the batteries).
4. LCD display resolution (definition): 0.1ºC.
5. Range of measurement: Body temperature: 30.0ºC - 42.0ºC; 86.0ºF - 107.6ºF.
Forehead temperature: 0.0ºC - 110.0ºC; 32.0ºF - 230.0ºF.
6. Consumed power: ≤ 50mW.
7. Measurement error: ±0.3ºC.
8. Measurement time: ≤ 0.5s.
9. Measurement distance: 50mm – 100mm.
10. Auto-shutdown time: 5s.
11. Emissivity: 0.95.
V. Basic Components and External Form (see the figure below)
VI. Method of Use
● In order to get a more accurate measurement value of body temperature, before the measurement, the forehead thermometer shall be put aside for 10 minutes after installation of batteries or when it is moved to a new environment (new place).
● Align the detection window with a person’s forehead while having a distance of 50-100mm to the forehead, and then push the measurement button in front of the handle. Now the thermometer will start up automatically and display the measurement result, as shown in the figure below:
● In the function setting buttons, press the SET button to show and search the historical measurement results. Press the or button to view the previous or next historical measurement result, as shown in the figure below:
Release the or button to shown the historical result.
VII. Specifications for Buttons and Display Symbols
Symbol / Specifications for symbol functionFunction button: Used to increase values in setting and turn pages in checking memory
Function button: Used to decrease values in setting and turn pages in checking memory
SET / Function button: Used to set functions or check memory data
Laser indicator
Battery indicator
The display value represents body temperature
The display value represents forehead temperature
ºC / Unit of temperature: Celsius degree
ºF / Unit of temperature: Fahrenheit degree
Sound indicator
Memory / Memory information
VIII. Settings
1. Function setting F-1: Selection of temperature unit
1) After the setting button is pressed and held for 3 seconds, the LCD screen will display F-1, and meanwhile the ºC symbol flashes.
2) Now press the + button to select Celsius scale (ºC).
3) Or press the - button to select Fahrenheit scale (ºF).
4) After the selection, press the SET button to save the setting parameters and go to the function setting F-2.
2. Function setting F-2: Setting of alarm threshold
1) After the setting button is pressed and held for 3 seconds, the LCD screen will display F-1.
2) Press the setting button again to display F-2 and enable the characters 37.5 to flash.
3) Now the alarm threshold will be increased by 0.1ºC when the + button is pressed each time.
4) Meanwhile, the alarm threshold will be decreased by 0.1ºC when the - button is pressed each time.
5) After the selection, press the SET button to save the setting parameters and go to the function setting F-3.
Note: The alarm threshold is the lower limit of alarm for temperature measurement. If a temperature is larger than this value, the thermometer will sound for alarm. The alarm threshold ranges from 33.0ºC to 40.0ºC for selection and adjustment, and its factory default value is set to 37.5ºC.
3. Function setting F-3: Selection of measurement-result modes – forehead temperature or body temperature
1) After the setting button is pressed and held for 3 seconds, the LCD screen will display F-1.
2) Press the setting button twice more to display F-3 and enable the characters 0 and 体温 to flash.
3) Now press the + button to display 1, i.e., the measurement result representing forehead temperature.
4) Or press the - button to display 0, i.e., the measurement result representing body temperature.
5) After the selection, press the SET button to save the setting parameters and go to the function setting F-4.
Note: The forehead temperature is the infrared surface temperature of forehead, and the body temperature is the result based on dynamic offset of ambient temperature and offset of forehead temperature.
4. Function setting F-4: Setting of overall offset
1) After the setting button is pressed and held for 3 seconds, the LCD screen will display F-1.
2) Press the setting button for three more times to display F-4 and enable the characters 0.0 to flash.
3) Now the offset value will be increased by 0.1ºC when the + button is pressed each time.
4) Meanwhile, the offset value will be decreased by 0.1ºC when the - button is pressed each time.
5) After the selection, press the SET button to save the setting parameters and go to the function setting F-5.
Note: The actual value of temperature measurement is adjusted with the offset ranging from -3.0ºC to +3.0ºC according to the actual measurement distance and environment. For example, the measurement result of a person’s body temperature is 35.9ºC in a special environment, but the actual body temperature of the person is 36.6ºC. In this case, the correct temperature value of 36.6ºC can be achieved through adjustment with the offset set by →F-4. (When the offset is negative, the correct result is the measurement value minus this value. When the offset is positive, the correct result is the measurement value plus this value. When the offset is 0.0, the correct result is the measurement value.)
5. Function setting F-5: Sound switch mode
1) After the setting button is pressed and held for 3 seconds, the LCD screen will display F-1.
2) Press the setting button for four more times to display F-5 and enable the character 1 to flash.
3) Now press the + button to display 1, i.e., switching on the sound function.
4) Or press the - button to display 0 with the symbol on the LCD screen disappearing, i.e., switching off the sound function.
5) After the selection, press the SET button to save the setting parameters and go to the function setting F-6.
6. Function setting F-6: Laser-beam switch mode
1) After the setting button is pressed and held for 3 seconds, the LCD screen will display F-1.
2) Press the setting button for five more times to display F-6 and enable the character 1 to flash.
3) Now press the + button to display 1, i.e., switching on the laser-beam function.
4) Or press the - button to display 0 with the symbol on the LCD screen disappearing, i.e., switching off the laser-beam function.
5) After the selection, press the SET button to save the setting parameters and exit the setting function.
7. Exiting the setting mode
1) When setting the function parameters, continuously press the SET button to exit the setting function.
2) When no button is pressed (no operation) for 12 seconds, it will exit the setting function automatically.
8. Changing the batteries
Display: When the battery symbol flashes on the LCD screen, it indicates the batteries are low.
Operation: Open the battery cover and change the old batteries with two new AA alkali batteries.
IX. Cautions
1. The protective lens of probe is the most damageable part of the infrared thermometer. Hence, it must be taken good care.
2. Cleaning method of probe lens: Use the cotton bud or soft cloth with water or alcohol to wipe the lens lightly.
3. Never charge the batteries or throw any of them into fire. Please discard the used batteries at a specified location for recycle. Using the batteries with a bad quality may cause fire or explosion.
4. Caution: When the product is not used for a long time, the batteries shall be removed.
5. The product may not be immersed into water or exposed to the sun directly.
6. Never hard throw or impact the product. Otherwise, it will be damaged.
7. If the measurement is made without an effective distance or an alignment with the central position of the measured object, a deviation from actual temperature may be caused. It is suggested to repeat the measurement once or more.
X. Quality Commitment and After-sales Service
The product is under warranty for one year from the date of purchase.
Caution: Damage caused by improper use or disassembly by a user is not covered under warranty.
Note: Please take good care of your warranty card and purchase bill for application of repair in case of damage.
XI. List of Accessories
A user manual.
A warranty card and a quality certificate.
Two AA batteries.
Product No. / HT-Target temperature (ºC) / 30 / 33 / 35.6 / 37 / 50
Measurement result (ºC)
10