10k 20k 50K 100k NTC Temperature Sensor With Stainless Steel Case
10k 20k 50K 100k NTC temperature sensor with stainless steel case for new energy automobile
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.
The rated room temperature resistance depends on the resistivity of the base material, the size and geometry, and the contact area of the electrodes. Thick and narrow thermistors have relatively high resistance, while thin and wide shapes have lower resistance. Actual size is also very flexible, they can be as small as .010 inches or very small diameter. There is almost no limit to the maximum size, but usually under half an inch applies.
Application
● Air conditioners, refrigerators, freezers, water heaters, water dispensers, heaters, dishwashers, disinfection cabinets, washing machines, dryers and other home appliances.
● Automobile air conditioner, water temperature sensor, intake air temperature sensor, engine
● Switching power supply, UPS uninterruptible power supply, frequency converter, electric boiler, etc.
● Intelligent toilet, electric blanket, etc.
Features:
● High sensitivity and fast response
● Resistance value and B value have high precision, good consistency and interchangeability
● Using double-layer encapsulation technology, it has good insulation sealing and resistance to mechanical collision and bending resistance
● The structure is simple and flexible, and can be customized according to different design requirements of customers.
Type | NTC(thermistor) Temperature Sensor |
Temperature range | -50℃ ~ +300℃；Customized |
Accurancy | 1%；5%；10% |
RT(25℃) | 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； teflon tube |
Connector | Molex；JST；DuPont；CWB；CJT；U type；Customized |
Waterproof | IP67；IP68 |
Advantages and characteristics of Auto Temperature Sensor
- We have the heart of NTC temperature sensor--full sets of production line and core technology of pro-prietary intellectual property rights for high performance temperature measurement NTC thermistor.
- We have all kinds of NTC core element of NTC Temperature sensor--high performance temperature measurement thermistors are own production,complete series,structural diversity. Our products can meet the requirements of prevision measurement in different temperature area from low temperature,medium and low temperature to medium-high temperature.These products have passed many safety certifications of domestic and foreign.
- Resistance and temperature characteristics can meet customer's requirements entirely,and support best convenience to customers.
- Mature manufacturing technique of NTC temperature sensor,Large-scale mass production,product have the best ability of insulation sealing,Mechanical collision,resistance to bending,well-set.
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% |
1. The application of the thermistor:__________
2.Working environment of thermistor:________
3.The range of operation temperature:___°c to ___°c
4.The dimension and the drawing of the Thermistor
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