1. Product Introduction and Classification
This product is designed for the measurement of human body temperature by collecting the infrared thermal radiation from the human forehead, offering simple, sanitary operation, and fast, accurate measurement. Users align the probe to the forehead and press the measuring button to obtain the temperature. It is widely used in schools, customs, hospitals, and families.
This product is a medical equipment of Class II with the protection level of IP22, belonging to the internal power supply equipment without application parts. It is a continuous running equipment, which can not be used in the mixed gases of the flammable anesthetic gas and air, oxygen or nitrous oxide and is classified by EU as Class II a.
Scope of Application: Display the body temperature of the measured object by measuring the forehead heat radiation.
The legends, warnings and their meanings are as follows:
- ? Symbol for "General warning sign"
- ⬆️ Symbol for "This way up"
- ? Symbol for "Serial number"
- ☔ Symbol for "Keep dry from rain"
- ? Symbol for "Batch code"
- ✅ Symbol for "CE mark"
- ? Symbol for "Manufacturer"
- ? Symbol for "Date of manufacturer"
- ? Symbol for "The operation guide must be read"
- ✋ Symbol for "Fragile, handle with care"
- ☢️ Symbol for "Non-ionizing electromagnetic radiation"
- ♻️ Symbol for "This marking shown on the product or its literature, indicates that it should not be disposed of, with other household wastes at the end of its working life. To prevent possible harm to the environment or human health from uncontrolled waste disposal, please separate this from other types of wastes and recycle it responsibly to promote the sustainable reuse of material resources."
Contraindications: None
2. Basic Working Principle
Any object will release infrared radiation energy, and the surface temperature directly determines the size and wavelength of the radiation energy. Based on this principle, this product is designed to apply the German high-precision infrared sensor to detect the infrared radiation energy with the wavelength of 5-14µm released by human body, and accurately measure the human body temperature through accurate operation and a variety of compensation correction.
3. Technical Parameters
| Parameter | Value |
|---|---|
| Model | CK-T1502 |
| Measuring method | Non-contact |
| Measuring distance | 3cm~5cm |
| Measuring range | 32°C~42.5°C (89.6°F~108.5°F) |
| Tolerance scope | Within 35°C~42℃ ±0.2℃; Out of range 35℃~42℃ ±0.3°C |
| Display resolution | 0.1°C |
| Adjusted mode | body mode |
| direct mode | surface mode |
| measuring site reference site | forehead; armpit |
| Operating environment | Temperature range: 10°C~40°C; Relative humidity range: 15%~85% (non-condensing); Atmospheric pressure: 80kPa~106kPa |
| Transport storage environment | Temperature range: 0°C~50°C; Relative humidity range: ≤90% (non-condensing); Atmospheric pressure: 80kPa~106kPa |
| Power supply | DC 3V (2 of AAA alkaline batteries) |
| Power tip | Low battery |
| Backlight | High brightness backlight |
| Display unit | Celsius or Fahrenheit degree |
| Automatic shutdown | 15Secs |
| Size | 190mm×40mm×40mm |
| Weight | 67g (without batteries) |
4. Product Features
- High-precision infrared sensor ensures stable and reliable performance.
- Strong ambient temperature adaptability allows normal use in complex environments.
- New independent intellectual property rights on the probe structure ensure more accurate measurement.
- Automatically saves the last measuring value.
- Large-size LCD screen with high brightness backlight provides a clear and soft display.
- Two kinds of temperature units, Celsius (℃) and Fahrenheit (℉), are optional.
- Automatic shutdown for energy saving.
5. Configuration
- LCD Screen
- Up Button
- Mode Selection Switch
- Scan Button
- Down Button
- Infrared Probe
- Battery Cover
6. Structure and Compositions
This product consists of the infrared sensor, microprocessor, memory, power supply, electro-acoustic components, LCD screen, and enclosure.
Product accessories: Operation Manual, warranty card, and certificate.
7. Icon Definition
| Icon Definition | Icon | State Description |
|---|---|---|
| Measuring Mode | Surface temperature | |
| Body temperature | ||
| Display Value | Measured temperature value | |
| Storage Location | 4 | Location of memory group No. |
| Battery Symbol | ? | Low battery status |
| Sufficient power | ||
| Buzz Symbol | ? | Display Buzzer on with beep |
| ? | No display Buzzer off without beep | |
| Temperature Unit | ℃ | Celsius degree |
| ℉ | Fahrenheit degree | |
| Storage Data Readout | 8 | The displayed values are memory values |
Diagram Description (Figure showing device parts): The device features an LCD screen (1), Up Button (2), Mode Selection Switch (3), Scan Button (4), Down Button (5), Infrared Probe (6), and Battery Cover (7). The display shows temperature readings, unit symbols (℃/℉), battery status, and other indicators.
8. Set Operations
This product provides function settings including temperature unit, warning tone switch, temperature alarm point, temperature offset, and measuring mode. The measuring mode is set by the MODE button, and other settings are accessed via the Set Menu.
The table of Set Menu is as follows:
| Menu | Function | "-"Key | "+"Key | Initial Value | Remarks |
|---|---|---|---|---|---|
| F1 | Temperature Unit | ℃ | ℉ | ℃ | |
| F2 | Temperature Alarm Point | Decrease 0.1°C | Increase 0.1°C | 38°C | |
| F3 | Temperature Offset | Downward offset 0.1°C | Upward offset 0.1°C | 0.0 | Range from -3°C to +3°C |
| F4 | Warning Tone Switch | Off | On | On |
Measuring Mode Setting
In the Power-On state, the screen displays the current measuring mode. Press the MODE button to select the desired measuring mode. The setting takes effect immediately.
Diagram Description (Fig. 8.1 & 8.2): Fig. 8.1 shows the screen displaying the current temperature (e.g., 36.5°C) and time. Fig. 8.2 shows a different screen display, possibly indicating a different mode or reading (e.g., 27.4°C).
Temperature Unit Setting (F1)
Press the "MODE" button for 2 seconds. The screen displays F1. Press the "-" button to select Fahrenheit (℉) or the "+" button to select Celsius (℃).
Diagram Description (Fig. 8.3, 8.4, 8.5): Fig. 8.3 shows the screen displaying 'F1'. Fig. 8.4 shows 'F1' with the Fahrenheit symbol '℉'. Fig. 8.5 shows 'F1' with the Celsius symbol '℃'.
Temperature Alarm Point Setting (F2)
Press the "MODE" button for 2 seconds, then press "MODE" once to enter F2. Use the "+" button to increase the temperature value by 0.1°C (0.1°F), and the "-" button to decrease it by 0.1°C (0.1°F). Note: The alarm default value is 38°C (100.4°F).
Temperature Offset Setting (F3)
Press the "MODE" button for 2 seconds, then press "MODE" twice to enter F3. Use the "+" button to increase the deviation value by 0.1°C (0.1°F), and the "-" button to decrease it by 0.1°C (0.1°F). This setting is useful when the season or environment changes, requiring adjustment.
Warning Tone ON/OFF Setting (F4)
Press the "MODE" button for 2 seconds, then press "MODE" three times to enter F4. Use the "+" button to turn on (ON symbol appears) or the "-" button to turn off (OFF symbol appears) the beep.
After entering the Set Menu, to modify a setting, continuously press the Menu key to select. Save settings by exiting. If shutdown occurs midway, new settings will not be saved. If the measuring key is pressed while in Set Menu, measurement will not be implemented.
9. Measuring Method
Ensure that the measuring mode on the screen is the body temperature mode.
Tips:
- Body temperature mode is suitable for measuring human body temperature, accounting for dynamic compensation between ambient and forehead surface temperatures.
- The temperature offset value can amend measured values based on ambient temperature, measuring distance, individual skin differences, etc. The correction range is from -3.0°C to +3.0°C, with a factory setting of 0.0°C. For example, if the thermometer reads 36.2°C and the actual temperature is 37.0°C, enter F3 to increase the deviation by 0.8°C.
- If the environmental temperature changes largely and affects the forehead temperature, measure through aligning on the back of the earlobe.
- Before and after use, keep the sensor and probe cavity clean.
- Place the thermometer in a stable environment. If moving from extreme temperatures (indoors to outdoors), allow it to stabilize for about 30 minutes before measuring.
- Do not measure immediately after exposure to extremely high or low temperatures.
- When the measured object comes from a significantly different temperature environment, allow the thermometer to stabilize in the test environment for at least five minutes.
- Avoid use after blowing, showering, sweating, or applying cosmetics on the forehead.
- Do not use within 30 minutes after exercise, bathing, or eating.
Measurement Procedure:
Align the thermometer probe to the forehead in the middle, keeping it vertical at a distance of about 3-5 cm (Fig. 9.1). Press the measuring key. After 1 second, a "beep" ? sound will be heard, and the measured value (Fig. 9.2) will be displayed. Measurement is complete. If the measured value exceeds the temperature warning point (default 38°C), a warning tone of five "beeps" is triggered.
Diagram Description (Fig. 9.1, 9.2, 9.3): Fig. 9.1 illustrates the recommended measuring distance of 3-5 cm from the forehead. Fig. 9.2 shows the thermometer display with a reading of 36.5°C. Fig. 9.3 shows an alternative measurement method using the earlobe.
10. Battery Replace
When the ? symbol displays on the LCD, it indicates a low battery state. Open the battery cover and replace the batteries. Ensure correct polarity (+/-). Use only specified batteries; non-rechargeable batteries cannot be charged. Remove batteries if not in use for over 3 months. Do not mix old and new batteries or different types.
Dispose of old batteries according to local regulations.
11. Maintenance and Precautions
Keep the sensor and probe cavity clean to ensure measurement accuracy.
Cleaning Methods:
- Surface cleaning: Wipe with a little medical alcohol or water using a clean soft cloth or cotton stick.
- Sensor and probe cavity cleaning: Gently wipe the probe cavity or sensor top with a little medical alcohol using a clean soft cloth or cotton stick. Use only after alcohol is completely volatile.
Notes:
- Please read the Operation Manual before use. Ensure the battery is installed.
- Forbidden to immerse the thermometer in any liquid or expose it to extreme temperatures for extended periods.
- Avoid collision, falling, or mixing with sharp objects. Do not disassemble.
- Do not use in direct sunlight or water. Avoid strong electromagnetic interference.
- Place the thermometer where children cannot reach it.
- Familiarize yourself with measurement methods and avoid changing factory settings.
- The measured value does not replace physician diagnosis.
Precautions:
- If unexpected operation or events occur after a drop/shock, contact service personnel. Do not open or repair the device yourself.
- Avoid using heat/cold producing devices near the thermometer, as they may impair performance or increase injury risk.
- If allergic to plastic/rubber, do not use this device.
- Servicing, repair, and opening must be done by authorized sales centers only.
- Allow at least 30 minutes for the equipment to cool from maximum storage temperature before intended use.
- Install and use the equipment according to provided information.
- Keep wireless communication equipment (mobile phones, etc.) at a distance 'd' from the equipment, calculated based on IEC 60601-1-2:2007 standards.
- Do not use a damaged device, as it may cause injury or improper results.
- Keep out of reach of children/pets to avoid inhalation/swallowing of small parts.
- When not in use, store in a dry room, protected from moisture, heat, lint, dust, and direct sunlight. Do not place heavy objects on the storage case.
- IP22 Rating: Protected against solid foreign objects of 12.5 mm Ø and greater; Protected against vertically falling water drops when tilted up to 15°.
12. Quality Commitment and After-sales Service
The service life of this product is 3 years, with 1 year of free maintenance service. Free maintenance is not provided for failures caused by user reasons or unauthorized disassembly.
Refer to the warranty card for the date of manufacture. Preparation Date of Manual: July 19, 2018. Version No.: V1.0. Software version V1.0.
Disclaimer: This product conforms to CFDA standards and is exported as epidemic prevention material. Any disputes arising from differences in executive standards between China and the importing country will not bear legal liability.
13. Troubleshooting
| Fault Description | Disposal Methods |
|---|---|
| "HI" displays on the screen | 1. Check the measured object. Avoid use after sun exposure, hot bath, sweating, hot air blowing, or applying cosmetics on the forehead. 2. Check the temperature offset setting (>0) and the factory setting (0.0). 3. Check the operation environment. If the instrument recently measured an ultra-high temperature, allow it to stabilize for about 10 minutes in a stable environment before measuring a low-temperature object to avoid test deviation. |
| "LO" displays on the screen | 1. Check the measured object. Avoid use after cold exposure, cold bath, cold air blowing, or applying cosmetics on the forehead. 2. Check the temperature offset setting (<0) and the factory setting (0.0). 3. Check the operation environment. If the ambient temperature changes significantly, allow it to stabilize for about 10 minutes in a stable environment before measuring a high-temperature object to avoid test deviation. 4. Check the measuring distance (3-5cm). |
| No response after pressing buttons | 1. Reinstall the battery. 2. Check whether the operation is implemented in the Set Menu or not. |
| No display or abnormal display | Reinstall the battery. |
| No beep tone | Check whether the tone setting is off. |
| The machine turns off immediately after power on | Check the battery power and reinstall the battery. |
Appendix - Electromagnetic Compatibility Statement
The Infrared Thermometer conforms to the EMC test standard IEC60601-1-2:2014.
Table 1: Guidance and Manufacturer's Statements - Electromagnetic Emission
| Emission Test | Test Grade | Conformity | Group | Electromagnetic Environments Guidance |
|---|---|---|---|---|
| Radio-frequency emission IEC/CISPR 11 | Class B | Group 1 | The radio frequency energy of this device is applied only when internal functions are running, so its emission is very low, causing no electromagnetic interference to nearby electronic equipment. This device is suitable for home networks and public low voltage power supply residences. | |
| Harmonic radiation IEC61000-3-2 | Type-B | Not applicable | ||
| Voltage fluctuation and scintillation radiation IEC61000-3-3 | Not applicable | Not applicable |
Table 2: Guidance and Manufacturer's Statements - Electromagnetic Immunity
| Immunity Test | Test Grade | Conformity Grade | Electromagnetic Environments Guidance |
|---|---|---|---|
| Electrostatic discharge IEC61000-4-2 | 6KV Contact discharge ±8KV Air discharge |
The floor must be made of wood, concrete, or tiles. If the floor is paved with synthetic materials, the relative humidity must be at least 30%. | |
| Electric fast transient/burst IEC61000-4-4 | ±2KV Double power line ±2KV Air discharge |
Not applicable | The quality of network power must be a typical commercial or hospital environment. |
| Surge IEC61000-4-5 | ±1KV line to line ±2KV line to earth |
Not applicable | The quality of network power must be a typical commercial or hospital environment. If the device needs to be kept running during network power interruption, a UPS is recommended. |
| Voltage dips, short interruptions and voltage variations IEC61000-4-11 | <5% UT (>95% dip) 0.5 cycle 40% UT (60% dip) 5 cycles 70% UT (30% dip) 25 cycles <5% UT (>95% dip) 5 seconds |
Not applicable | The quality of network power must be a typical commercial or hospital environment. |
| Power frequency magnetic field IEC61000-4-8 | 3A/m 50/60Hz | 3A/m | The power frequency magnetic field shall be at the electrical level in a typical commercial or hospital environment. |
Table 3: Guidance and Manufacturer's Statements - Electromagnetic Immunity
| Immunity Test | Test Grade | Conformity Grade | Electromagnetic Environments Guidance |
|---|---|---|---|
| Conduction immunity IEC61000-4-6 | 150kHz-80MHz 3 Vrms | Not applicable | The floor must be made of wood, concrete, or tiles. If the floor is paved with synthetic materials, the relative humidity must be at least 30%. |
| Radiated immunity IEC61000-4-3 | 80MHz-2.5GHz 3 V/m | 3 V/m | Portable and mobile RF communication equipment must be used outside a specified distance from any part of the equipment. The isolation distance is calculated by the appropriate equation with the selected transmitter frequency. The formula for recommended isolation distance is: d=1.2√P (for 80MHz to 800MHz), d=2√P (for 800MHz to 2.5GHz), where P is the rated output power of the transmitter in watts, and d is the recommended distance in meters. The field strength of RF transmitter obtained from measuring the electromagnetic field must be less than the conformity grade. Interference may occur near the device marked with the symbol ⚠️. Note 1: In 80MHz-800 MHz, apply the formula at a higher frequency range. Note 2: Guidelines may not apply to all situations due to absorption and reflection of electromagnetic waves by structures, objects, and crowds. |
Table 4: Recommended Distances between This Device and Portable / Mobile RF Communication Devices
This device can be used in an electromagnetic environment where RF interference is controlled. To avoid interference, maintain minimum recommended distances between the device and portable/mobile RF communication devices. The following distances are calculated based on the maximum output power of the communication device.
| Maximum rated output power of the transmitter (W) | Calculate the isolation distance (m) according to the transmitter frequency | ||
|---|---|---|---|
| 150kHz-80MHz | 80MHz-800MHz | 800MHz-2.5GHz | |
| 0.01 | d=1.2x√P = 0.12 m | d=1.2x√P = 0.12 m | d=2x√P = 0.23 m |
| 0.1 | d=1.2x√P = 0.37 m | d=1.2x√P = 0.37 m | d=2x√P = 0.74 m |
| 1 | d=1.2x√P = 1.17 m | d=1.2x√P = 1.17 m | d=2x√P = 2.34 m |
| 10 | d=1.2x√P = 3.69 m | d=1.2x√P = 3.69 m | d=2x√P = 7.38 m |
| 100 | d=1.2x√P = 11.67 m | d=1.2x√P = 11.67 m | d=2x√P = 23.34 m |
Note: In the frequency range of 150k-80MHz, the field strength should be less than 3V/m.
Manufacturer Information
Manufacturer: Shenzhen Changkun Technology Co., Ltd.
Production Address: Floor 3, Floor 4, Floor 5, Floor 7, B building No. 69, Zhenbi Road, Biling Community, Pingshan Street, Pingshan district, Shenzhen, Guangdong, China
TEL: +86-0755-29100487
Medical instrument registration certificate: 粤械注准20162200953号