The Michell Instruments (part of DwyerOmega) sensors measure relative humidity which is the ratio between the amount of water vapor present in the environment at a given time and the amount of water vapor required to saturate the air. Humidity is a measure of the amount of water vapor present, values are available directly from many of our devices for example as Mixing Ratio (g/kg). 

Humidity levels effect materials of all types as well as individuals’ health and wellbeing. Humidity measurement is important during production processes across industry, in packaging and product storage; it is vital to ensure product quality. In the highly regulated pharmaceutical and food industries it is a key requirement and must be fully documented. In museums and galleries humidity levels must be controlled to protect artefacts. Meteorological reports necessarily include the measurement of air humidity as well as temperature and other parameters. It is crucial to measure temperature together with humidity since a small variation in temperature has a large effect.

We offer a comprehensive range of precision humidity measurement devices that are specified by leading companies worldwide, including handhelds; data loggers featuring a continuous environmental remote monitoring system (RMS), and measurement transmitters with analogue and digital outputs. A wide range of combined temperature and humidity probes are manufactured by Rotronic suitable for all applications including potentially explosive ATEX rated gas and dust environments.