Michell Optidew 501 and 401 chilled mirror hygrometers

Monday, 16 April, 2018 | Supplied by: AMS Instrumentation & Calibration Pty Ltd

Optidew 401 501

The Optidew 501 and 401 chilled mirror hygrometers from Michell Instruments offer a faster response to changes in humidity.

Michell’s engineers have developed a hybrid mirror to provide a fast response to changes in temperature and humidity, while also improving the drift-free accuracy of the fundamental chilled mirror technique by 25% to ±0.15°C. Three choices of sensor are available: single- and dual-stage cooling, plus a dual-stage sensor that is designed specifically for use in harsh, demanding applications such as control of metallurgical processes. The harsh environment sensor is capable of operating in temperatures up to 120°C.

The Optidew 501 is a wall-mounted unit, while the Optidew 401 is a benchtop instrument. Both are available with a full colour touch screen HMI for easy local operation and interrogation. The Optidew 501 is also available as a transmitter, without a screen, for integration into a DCS, or an environmental monitoring system. Michell also offers PC-based software for data capture and graphing. The transmitter version also includes a multicolour LED indicator that clearly displays the instruments’ status for operators to view locally.

The Optidew 501 and 401 both have two 4–20 mA outputs and offer a choice of digital communications. The wall-mounted Optidew 501 has Modbus RTU over RS485 as standard, with an optional Ethernet connection and SD card slot for data logging. As a benchtop unit, the Optidew 401 has a wider range of communications as standard: RS485, USB and SD card data logging. An Ethernet connection is also available.

Online: www.ams-ic.com.au
Phone: 03 9017 8225
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