Dongguan Chenglue Electronic co.,Ltd
Dongguan Chenglue Electronic co.,Ltd
Add to Cart
High Precision NTC Temperature Sensor High Thermal Conductivity Alumina Shell Seal
NTC temperature sensor is a commonly used temperature measuring instrument. It is generally composed of NTC thermistor, probe (metal shell or plastic shell, etc., extension lead, and metal terminal or connector). Its main feature is that the temperature within the working temperature range- The voltage relationship is a straight line. This second development of temperature measurement and temperature control circuit design can complete the temperature measurement or temperature control circuit design without linearization processing, simplifying instrument design and debugging.
Features
Proven Stability and Reliability,
Cost effective solutions
Variety of metal and plastic housings and tubings designed for specific applications
Potted with different kinds of resin for good sensor protection
Available with special kinds of cables (2-core cables or stranded with PVC, Silicone, Teflon or Kynar insulation,cables with screen & other), connectors and other attachments
Provides good protection from the environment conditions
Proven high voltage strength and dynamic strength
Wide range of Resistance/Temperature, characteristics
Designed for temperature measurement, control and compensation
| 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 |
What is the principle of the ntc temperature sensor?
The principle of the ntc temperature sensor is to use the NTC thermistor to drop rapidly as the temperature rises under a certain measurement power. 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.
Negative temperature coefficient thermistors are made of metal oxides such as manganese, cobalt, nickel and copper, and are manufactured by ceramic technology. These metal oxide materials all have semiconductor properties, because they are completely similar to semiconductor materials such as germanium and silicon in terms of conductivity. When the temperature is low, the number of carriers (electrons and holes) in these oxide materials is small, so its resistance value is high; as the temperature increases, the number of carriers increases, so the resistance value decreases. The variation range of NTC thermistor at room temperature is 100~1,000,000 ohms, and the temperature coefficient is -2[%]~-6.5[%]
(Highest tolerance can be reach ±0.02℃) (Years of drif rate ≤1‰)
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% |