发布日期:2022-10-09 点击率:218
NTC热敏温度探头技术要求 | ||||||||
1、NTC标称电阻值:R0=1000 Ω-B | ||||||||
Rate zero-resistance value:R0=1000 Ω-B | ||||||||
2、电阻:水中绝缘500VDC,大于100MΩ; | ||||||||
Insulation resistance : 100M Ω Min,500VDC. in water | ||||||||
3、耐电压: 水中,在NTC传感器与外壳间施加1500VAC ,1分钟,无闪络,无击穿; | ||||||||
Insulation voltage:No flah and breakdown,1500VAC,1min , between coating and line , in water; | ||||||||
4、探头头部使用温度范围:-50~+300℃。 | ||||||||
Operation temperature range of the top:-50~+300℃。 | ||||||||
5、高温存储Hot te mperature storage: 将热敏探头存放于150℃±5℃干燥环境中,1000hrs 后,测试其电阻值R 25、B | ||||||||
值,| △R/R|≤3%,△|B/B|≤1% | ||||||||
Store in hot still air at 150 ℃±5 ℃ for 1000hrs, and test |△R/R|≤3% ,△|B/B|≤1%;; | ||||||||
6、低温存储Low temperature storage: 将NTC探针存放于-30℃±5℃干燥环境中,1000hrs 后,测试其电阻值R 25、B值 | ||||||||
|△R/R|≤3% ,△|B/B|≤1%: | ||||||||
Store | in dry still air at -30℃±5℃ for 1000hrs,|△R/R|≤3% ,△|B/B|≤1%; | |||||||
and test |△R/R|≤3% ,△|B/B|≤1%; | ||||||||
7、冷热冲击试验Thermal shock test: 将温度传感器存放于-20 ℃±5 ℃干燥环境5mins | , 室温环境1mins ,100 ℃±5℃干燥 | |||||||
环境5mins , 室温环境1mins,如此循环1000 次后,测试其R 25、B值,△|R/R|≤3% ,△|B/B|≤1% | ||||||||
After 1000 cycles of -20℃±5℃ dry air 5mins | room ambient temperature 1mins ;100±5 ℃dry air 5mins room | |||||||
ambient temperature 1mins ,and test |△R/R|≤3% ,△|B/B|≤1%; | ||||||||
8、高温高湿High humidity and High temperature storage: 将NTC温度探头存放于95%RH,85℃环境中,1000hrs 后,测试 | ||||||||
其热敏电阻电阻值R 25、B值,|△R/R|≤3%,△|B/B|≤1%; | ||||||||
Store in 95%RH,85℃ air conditions for 1000hrsand test |△R/R|≤3%,△|B/B|≤1%; | ||||||||
9、热敏电阻耗散系数(δ):不小于4.2mW/℃; | ||||||||
Dissipation constant (δ): 4.2mW/ ℃ over | ||||||||
10 、NTC热时间常数(τ): 约 2.5s油中; | ||||||||
Thermal time constant (τ):Approx | 2.5s in oil |
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