Dongguan Chenglue Electronic co.,Ltd
Dongguan Chenglue Electronic co.,Ltd
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Customized NTC Temperature Sensor High-Accuracy Resistance And B Value Good Interchangeability
Characteristic:
1: It adopts new technology, stable product performance and can work for a long time. (annual resistance drift rate ≤ 1%)
2: The resistance value and b value have high precision, good consistency and interchangeability. (the accuracy of resistance value and b value can reach ± 0.5% respectively)
3: High sensitivity and quick response. (resistance temperature coefficient can reach - (2 ~ 5)% / ℃)
4: The double-layer sealing technology is adopted, which has good insulation sealing, mechanical collision resistance, bending resistance and high reliability.
5: It can be packaged according to the installation conditions, which is convenient for users to install.
6: It can be made into high dissipation products, and the test current can be much higher than that of traditional sensors, which simplifies the test circuit.
Applications of NTC thermistor temperature sensors:
| 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
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% |