Quartz Crystal Microbalance


Quartz Crystal MicrobalanceThe Quartz Crystal Microbalance (QCM) technology for moisture measurement is based on monitoring the frequency modulation of a hygroscopic-coated quartz crystal with specific sensitivity to water vapor. Bulk adsorption of water vapour onto the coated crystal causes an increase in effective mass, which reduces the resonant frequency of the crystal, in direct proportion to the water vapor pressure. This sorption process is fully reversible with no long-term drift effect, giving a highly reliable and repeatable measurement.

The QMA401 is the result of Michell Instruments’ continuous improvement of Quartz Crystal Microbalance technology. The analyzer utilizes a new generation of precision crystal oscillators, guaranteeing high accuracy moisture measurements which are completely insensitive to changes in background gas composition. While measurements at quantities of moisture <1ppm V stretch the capabilities of other technologies, the new QMA401 offers reliability, simplicity and greatly reduced cost of ownership from the industry-proven Quartz Crystal technology.

QMA2030 QMA601
The next generation Advanced Quartz Crystal Microbalance analyzer from Michell Instruments is designed to provide reliable, fast and accurate measurement of trace moisture content in a wide variety of process applications where keeping moisture levels as low as possible is of critical importance.

QMA401 QMA401
The next generation Advanced Quartz Crystal Microbalance analyzer from Michell Instruments is designed to provide reliable, fast and accurate measurement of trace moisture content in a variety of applications where keeping moisture to a minimum is of critical importance.