指出常规湿度计在恶劣环境条件下不能正常工作，如高压、高温、液体气溶胶、偶尔浸水、高流速或腐蚀性载气。讨论了一种涉及差分红外测量的湿度测量技术，其中样品探针是光束，而不是物理接触传感器。状态:该装置可以浸入水中，不会出现故障或校准损失，动态范围宽，响应时间为0.05秒。提供现场和实验室数据。关键词:湿度计、湿度、测量、仪器化:研讨会论文，马里兰州巴尔的摩，1992年

States that conventional hygrometers do not function well in harsh environmental conditions such as high pressure, high temperature, liquid aerosols, occasional water submersion, high flow velocity or corrosive carrier gas. Discusses a humidity-measuring technique involving differential infrared measurements wherein the sample probe is a beam of light rather than a physical contact sensor. States this device can be immersed in water without failure or loss of calibration, has a wide dynamic range, and has a 0.05 second response time. Presents field and laboratory data.KEYWORDS: Hygrometers, humidity, measuring, instruments