The Michell Instruments S8000-100 is a state-of-the-art chilled mirror hygrometer designed to serve as a primary reference standard for humidity measurements in the most demanding laboratory and research applications. It offers an exceptionally wide measurement range down to -100°C dew point, coupled with outstanding accuracy of ±0.1°C, making it ideal for applications like calibrating other instruments and conducting precision R&D .

The instrument incorporates several advanced technologies to ensure measurement integrity. Its advanced dual optics system provides high sensitivity and fast response, even at extremely low moisture levels. The FAST (Frost Assurance) system guarantees that measurements are made over ice, eliminating the uncertainty of whether dew or frost is being measured. The DCC (Dynamic Contamination Correction) system automatically adapts instrument control to maintain a uniform condensate layer and optimal performance, even in the presence of contamination .

A unique feature is the included viewing microscope, which allows users to directly inspect the mirror surface and visually confirm the state of condensation . The S8000-100 provides complete remote operability via Modbus digital communications and analog outputs. Its high-contrast touch screen interface displays measured values, trend graphs, and fault warnings, while an SD card slot enables extensive data logging. External 4-wire PT100 connections are also provided for remote mirror temperature monitoring.