OEM Medical Temperature Sensor Has Good Insulation Sealing And
Mechanical Impact Resistance
| Dongguan Linkun Electronic Technology Co., Ltd. |
| Main technical parameters of sensor series thermistor: |
| Model | Rated resistance value (R25) | B value | Operating temperature | Dissipation coefficient | Thermal time constant |
| Resistance value (KΩ) | Allowable deviation (±%) | Nominal value (K) | (mW/℃) | (S) |
| CWF-102-3435 | 1 | ±1% ±2% ±3% ±5% | 3435 | -40℃ ～ ＋120℃ | ≥3.0 in still air | ≤6.0 in still air |
| CWF-202-3435 | 2 | 3435 |
| CWF-2.252-3950 | 2.252 | 3950 |
| CWF-472-3950 | 4.7 | 3950 |
| CWF-502-3470 | 5 | 3470 |
| CWF-502-3950 | 5 | 3950 |
| CWF-682-3950 | 6.8 | 3950 |
| CWF-103-3435 | 10 | 3435 |
| CWF-103-3470 | 10 | 3470 |
| CWF-103-3600 | 10 | 3600 |
| CWF-103-3380 | 10 | 3380 |
| CWF-103-3977 | 10 | 3977 |
| CWF-103-4100 | 10 | 4100 |
| CWF-153-3950 | 15 | 3950 |
| CWF-203-3950 | 20 | 3950 |
| CWF-233-3950 | 23 | 3950 |
| CWF-303-3950 | 30 | 3950 |
| CWF-333-3977 | 33 | 3977 |
| CWF-403-3950 | 40 | 3950 |
| CWF-473-4013 | 47 | 4013 |
| CWF-503-3977 | 50 | 3977 |
| CWF-503-3990 | 50 | 3990 |
| CWF-503-4050 | 50 | 4050 |
| CWF-104-3950 | 100 | 3950 |
| CWF-104-3990 | 100 | 3990 |
| CWF-104-4200 | 100 | 4200 |
| CWF-204-3892 | 200 | 3892 |
| CWF-204-3917 | 200 | 3917 |
NTC temperature sensors are usually composed of 2 or 3 metal
oxides, mixed in a fluid-like clay, and calcined into a dense
sintered ceramic in a high-temperature furnace. Oxygen-bonded
metals tend to donate free electrons. Ceramics are generally
excellent insulators. But only theoretically, this is the case for
thermistor-type ceramics when the temperature approaches absolute
zero. However, as the temperature increases to more common ranges,
thermal excitations eject more and more free electrons. As more
electrons carry current through the ceramic, the effective
resistance decreases. Resistance changes very sensitively with
temperature. A typical change is a decrease of (-)7[%] to 3[%] per
degree Celsius. This is the most sensitive of any sensor suitable
for use over a wide temperature range.
Type | NTC(thermistor) Temperature Sensor |
Temperature range | -50℃ ~ +300℃；Customized |
Accurancy | 1%；5%；10% |
| 1K；2K；2.2k；2.7k；3K；5K；7K；8K；12K；15K；20K；25K；30K；40K；47K；50K；60K；70K；100K；200K；230K；250K；470K；500K；1000K；Customized |
B value | 3274；3435；3470；3928；3950；3977；4100；4200；4400；Customized |
Probe Material | Stainless steel SS304； aluminum；copper；plastic；epoxy；glass |
Installation | Flanged；Surface；Threaded；Plastic；Straight；Film；Customized |
Wire Material | Heat shrinkable tube；PVC tube；glass fiber tube； tube |
Connector | Molex；JST；DuPont；CWB；CJT；U type；Customized |
Waterproof | IP67；IP68 |
The main technical parameters:
1. The rated zero-power resistance value R25 refers to the
zero-power resistance value of the thermistor measured at 25°C.
2. B value; defined as the ratio of the difference of the natural
logarithm of the zero-power resistance value at two temperatures to
the difference between the two temperatures.
3. Thermal time constant; under zero power conditions, when the
temperature changes suddenly, the time required for the temperature
of the thermistor body to change by 63.2% of the temperature
difference between the beginning and the end.
4. Dissipation coefficient; at a specified ambient temperature, the
ratio of the change in power dissipation of the thermistor to its
corresponding temperature change.
NCT temperature sensor application range
◆Heating and heating air conditioners and related equipment
◆Household appliances of various sizes: air conditioners,
refrigerators, battery stoves, bread ovens, baking ovens, electric
ovens, microwave ovens, electric fans, soybean milk machines,
electric water heaters, electric rice cookers, disinfection
cabinets, water dispensers, heaters, electric irons, disinfection
Cabinets, drinking fountains, lighting appliances, etc.
◆Temperature measurement and control circuits for agricultural,
medical, environmental protection, meteorological, food processing
and other equipment
◆Instrument coils, automotive circuits, integrated circuit modules,
transistor amplifier circuits, temperature compensation circuits
such as quartz crystal oscillators and thermocouples
Working principle of temperature sensor
Using the NTC thermistor under a certain measurement power, the
resistance value drops rapidly as the temperature rises. Utilizing
this feature, the NTC thermistor can be used to determine the
corresponding temperature by measuring its resistance value, so as
to achieve the purpose of detecting and controlling the
temperature.
Conventional product electrical performance parameters
Part No. | R25℃ (KΩ) | B(K) 25/50℃ | Rated Power @25℃(mW) | Dissipation Factor(δ) (mW/℃) | Thermal time Constant (S) |
TS502□3274A | 5.0 | 3274 | 10-20 | 2-4 | 5-20 |
TS502□3435B | 5.0 | 3435 | 10-20 | 2-4 | 5-20 |
TS502□3470A | 5.0 | 3470 | 10-20 | 2-4 | 5-20 |
TS502□3950A | 5.0 | 3950 | 10-20 | 2-4 | 5-20 |
TS103□3274A | 10.0 | 3274 | 10-20 | 2-4 | 5-20 |
TS103□3435B | 10.0 | 3435 | 10-20 | 2-4 | 5-20 |
TS103□3470A | 10.0 | 3470 | 10-20 | 2-4 | 5-20 |
TS103□3950A | 10.0 | 3950 | 10-20 | 2-4 | 5-20 |
TS103□4100A | 10.0 | 4100 | 10-20 | 2-4 | 5-20 |
TS153□3950A | 15.0 | 3950 | 10-20 | 2-4 | 5-20 |
TS153□4100A | 15.0 | 4100 | 10-20 | 2-4 | 5-20 |
TS203□3950A | 20.0 | 3950 | 10-20 | 2-4 | 5-20 |
TS203□4100A | 20.0 | 4100 | 10-20 | 2-4 | 5-20 |
TS223□4200A | 22.0 | 4200 | 10-20 | 2-4 | 5-20 |
TS403□3928A | 40.0 | 3928 | 10-20 | 2-4 | 5-20 |
TS503□3950A | 50.0 | 3950 | 10-20 | 2-4 | 5-20 |
TS503□4100A | 50.0 | 4100 | 10-20 | 2-4 | 5-20 |
TS104□3950A | 100.0 | 3950 | 10-20 | 2-4 | 5-20 |
TS104□4100A | 100.0 | 4100 | 10-20 | 2-4 | 5-20 |
TS104□4400A | 100.0 | 4400 | 10-20 | 2-4 | 5-20 |
Application
