U-Shaped Wiring Ring NTC Temperature Sensor 5K 10K 50K 100K Easy To
Install, Suitable For Integrated Circuits, Relay Tem
product information
Product type: U-shaped wiring ring NTC temperature sensor
Product features: fixed installation, spot temperature measurement
and control
Model usage: temperature measurement/temperature control/overheat
protection
Operating temperature range: 0~125℃
Thermal time constant: about 10S
Waterproof grade: IP66
Product qualifications: Meet certification requirements
Product application scope:
Relay temperature control, integrated circuits, Internet of Things,
small thermostats, etc.
Product customization instructions:
(1) Resistance value of the product (nominal resistance value at
25°C, or other)
(2) Product accuracy (1%~5%)
(3) B value coefficient of the product
(4) Wire model and length (color, length, temperature resistance
requirements)
(5) Wire tail specifications (tin dipped, socket plug-in, special
specifications)
(6) Probe specifications and materials (nickel-plated copper, red
copper, stainless steel, ABS plastic shell)
(7)Use 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 |
Material, type and size:
Thermistors are bulk semiconductor devices and as such can be
manufactured in a variety of forms. More common ones include discs,
beads and rods. Sizes do vary from 1mm beads to discs a few
centimeters in diameter and thickness.
There are different types of thermistors, most of which respond
differently to changes in temperature. Thermistors are not linear
and their response curves vary from type to type. Some thermistors
have a nearly linear temperature-resistance relationship, others
have a sharp change in slope (sensitivity) at a specific
characteristic temperature.
Main Technology Parameters
| Part number | Rated resistance R25 | B value (25/50) | Dissipattion Coeffient.
| Thermal time constant | Operating temperature |
| Range KOhm | Tolerance % | (K) | Tolerance % | Mw/℃ | sec | ℃ |
| CWF□□□3100 | 0.1~20 | ±1 ±2 ±3 ±5 | 3100 | ±1 | ≥2.2 | ≤70 | -55~+125 |
| CWF□□□3270 | 0.2~20 | 3270 |
| CWF□□□3380 | 0.5~50 | 3380 |
| CWF□□□3470 | 0.5~50 | 3470 |
| CWF□□□3600 | 1~100 | 3600 |
| CWF□□□3950 | 5~100 | 3950 |
| CWF□□□4000 | 5~100 | 4000 |
| CWF□□□4050 | 5~200 | 4050 |
| CWF□□□4150 | 10~250 | 4150 |
| CWF□□□4300 | 20~1000 | 4300 |
| CWF□□□4500 | 20~1000 | 4500 |
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.
Reliability Test
| Test Item | Test Standard | Test method | Performance requirements |
| Zero Power Resistance | IEC 60539-1 | Immerse samples in the constant temperature bath at 25℃±0.005℃,test
steady resistance | Resistance tol ±1%
|
| B value | IEC60539-1 | Immerse samples in the constant temperature bath at 25℃,50℃(or
85℃), test steady resistance,and calculate B value | Resistance tol ±1%
|
| Free fall | IEC60068-2-32
| Fall height: 1.5±0.1m,Surface: Cement , 1 time | No obvious damage, R25 △R/R≤±1%
|
| Insulation | IEC60539-1
| 500V pressure on insulation shell test insulation resistance | >500MOhm
|
| Withstand voltage | IEC60539-1 | Withstand voltage: 1500V/AC ,Leakage current:2mA Lasting: 60sec
| No obvious damage
|
| Tension | IEC60068-2-21 | Pull uniform speed at the end, F>4.0KG(requested by customer)
| No obvious damage, R25 △R/R≤±1%
|
| Vibration | Q/HBm 108-94 | Test frequency: 10~500Hz,swing: 1.2mm acceleration: 30m/s2
Direction X,Y,Z Time:8Hour/direction | No obvious damage, R25 △R/R≤±1%
|
| Steady humidity and heat | IEC60068-2-78 | Temp:40±2℃ Humidity:92-95%RH Time:1000±24Hour | No obvious damage, R25 △R/R≤±1%
|
| Thermal time constant | EC60539-1 | Immerse in 25℃ water,after thermal balance,immerse in
85℃,resistance arrives 63.2%,calculate total time | <10 sec
|
| High temperature storage | IEC60068-2-2 | Temp:125℃±5℃ Time: 1000±24Hour | No obvious damage, R25 △R/R≤±1% |
| Cold and thermal shock | IEC60068-2-14 | -40℃~+125℃ T1:30min Cycle time:1000
| No obvious damage, R25 △R/R≤±1%
|
| Knock experiment | IEC60068-2-77 | Acceleration:250m/s2 Pulse lasting: 6ms Knock times: 1000 Recovery
time: 2 Hour
| No obvious damage, R25 △R/R≤±1%
|
| Low temperature storage | IEC60068-2-1 | Temp: 40±2℃ Time: 1000±24Hour
| No obvious damage, R25 △R/R≤±1%
|
| Salt spray | IEC60068-2-11 | Temp: 35±2℃ Collection hour : 1.0mL~2.0mL Time: determine per as
actual demand | No obvious damage, R25 △R/R≤±1%
|
Application
