详细信息
■ 电气性能Performance Parameter
1. 标称电阻值Resistance(R25)
要求requirement:TH1:R25=10KΩ±1%。
测量方法test method:在25℃±0.05℃的高精度恒温油槽中测量,采用六位半欧姆表测试。(25℃±0.05℃ in the oil.)
2. B值B-value
要求requirement:TH1:B25/85=3950K±2%。
测量方法test method:在高精度恒温油槽中分别测量25±0.05℃、85±0.05℃电阻值,然后按以下公式计算。
The resistance at25±0.05℃、85±0.05℃in the oil Then calculate it in the following formula:
Bt1/t2=ln(Rt1/Rt2)/(1/(t1+273.15)-1/(t2+273.15))
B(25/85)=4098.6× lg(R25/R85)
■ 热时间常数Thermal time Constant(τ)
要求requirement:τ=10~18s
测量方法test method:以空气为介质,产品从50℃空气中放入到25℃空气中电阻值达到34.2℃对应值时的时间。In the air, When the products be put into the air at25℃ from the air at50℃ ,Thermal time constant is the time
that cost by the resistance becoming to be the value at34.2℃.
■ 耗散常数Dissipation Constant(δ)
要求requirement:δ=1.9~3.0mw/℃
试验方法test method:(被测产品在25±0.5℃静止空气中接入以下电路。)
(The product will be join with the following circuit at 25±0.5℃in still air. )
■ 最大额定功率Max. rated power
要求requirement:P≈500mw
■ 绝缘电阻Insulation resistance
要求requirement:
试验条件test condition:500v直流电压下所测50MΩ以上(在玻管与引线间测量)。At DC 500v.(Between glass and lead wire)
■ 工作温度范围:-50℃~+300℃。
Operating temperature range:-50℃~+300℃。
■最大允许电流Max. Permissible Current
要求requirement:0.72mA
试验条件test condition:在25℃静止空气中,温度超过传感器正常工作温度范围,能容许的最大电流。The current which can be applied to the sensor for rised upper limit of operating temp. range at25℃in still air.