P14

湿度传感器中的电容测量电路

得益于领先的生产工艺与对材料特性的充分理解,IST-AG针对高精度测量,露点测量,高温测量,和油中湿度测量,开发了丰富的湿度传感器产品。对于湿度测量,传感元件所表达的是与湿度相关的材料特性,以最大限度地将这种材料特性还原出来,需要对电路具有精确的把控能力,做到知其然又知其所以然。本文旨在对湿度测量电路进行原理性解释,并分析可能存在的误差,为实现各类复杂工况条件下的精确湿度测量提供一些思路。
Humidity & temperature_sensor_HYT223_heated

Accurate humidity despite exposure to volatile organic components

Volatile organic components (VOC) cause drift in humidity sensors, requiring a removal and resetting of the sensor. The Heated HYT 223 is IST’s newest member of the HYT product series and allows for an automatic reset without having to remove the sensor. When measuring humidity in environments with exposure to VOC, a drift occurs which over time causes faulty measurement results. The sensor needs to be removed and reset, which is not only time-consuming and requires regular re-calibration of the sensor, but ultimately amounts to maintenance costs
Pt1000 RTD sensors with axial lead wires

应用于狭窄空间的PT1000 RTD传感器

对于空间狭窄的应用如安装在内径小于0.6毫米的钻孔或管中,IST AG提供带有轴向引线的Pt1000 RTD传感器。其极窄的传感器芯片结构和玻璃钝化允许在非常狭窄的空间中进行温度测量,其公差为:在-200°C-+ 400°C范围内,0°C时的偏移为+/- 10%。

其他构造示例如把带有轴向引线的传感器应用于长软管或通道中,并在多个点上平均温度,这些温度用作平均传感器。

HYT939P-with-Filter

Robust humidity and temperature monitoring in industrial settings

In industrial drying processes humidity measurement is vital in providing early warning of fluctuations in moisture content or for providing an indirect indication of how close dried materials are to their desired final moisture content. IST AG’s HYT 939P with VOC protection provides the optimal solution for compact sensors in industrial drying applications.