Michell Instruments QMA401 low-maintenance trace moisture analyser

Michell Instruments’ QMA401 low-maintenance trace moisture analyser has a new look and enhanced usability.

Maintaining the quartz-crystal oscillator-based analyser is simple, infrequent and inexpensive. No service is required for two years, at which point the desiccant dryer could need replacement — a process that can be carried out by the user in less than 10 min. It’s straightforward to replace the internal moisture generator in the field with a freshly calibrated NPL or NIST traceable reference unit from the factory, which will last for three years of operation.

The hygrometer features an improved touch-screen interface and the menu system is intuitive for easy operation. The case of the QMA401 has been redesigned with a modern, easy-clean surface.

Using the new generation of quartz crystal microbalance (QCM) sensor, the precision hygrometer s designed to provide consistently accurate measurements of trace moisture. This is achieved through an automatic self-calibration system which adjusts the analyser against an internal moisture generator (traceable to NPL and NIST).