Michell Instruments S8000 Remote chilled mirror hygrometer

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The relative humidity in climatic chambers will always deviate from the set point. Even in high-precision chambers, this deviation is typically between 1-3% RH. A calibrated reference instrument such as a chilled mirror hygrometer reduces this uncertainty to just 0.5% RH, but can be difficult to install and bulky, reducing the amount of usable test space within the chamber.

To overcome these space issues, Michell Instruments has introduced an innovative sensor design with the launch of their S8000 Remote chilled mirror hygrometer. The compact remote sensor head features an open cell design, removing the need for any complex heated sampling arrangements or an external pump. Installing the sensor is simply a matter of placing it in an appropriate position within the chamber, and routing the cable externally to the instrument.

The improved design has an optional aluminium sensor head that provides a swift response to changes in temperature, preventing any risks of condensation occurring during rapid transitions between temperature set points. The sensor provides upgraded temperature control for extremely accurate dew-point measurement and, coupled with the standard ±0.1°C accuracy ambient temperature sensor, it provides fundamentally derived, high-precision relative humidity readings necessary for validating the results of environmental tests.