Michell’s chilled mirror hygrometer for Chinese automotive emissions tests

Michell’s Optidew 501 wall-mounted chilled mirror dewpoint hygrometer
was selected by leading Chinese automotive manufacturer SAIC Motor Corporation as
a reference instrument for temperature and humidity control during engine
emissions tests.

China has the world’s largest fleet of motor vehicles estimated at
around 340 million. Due to this volume of traffic, limiting air pollution is a
priority and stringent emissions standards are enforced by the government. Implemented
on 1st January 2017, China’s ‘National V’ emissions standards are equivalent to
the EU’s ‘Stage V’ emissions standards that have been in force in Europe since

To further cut emissions, new stricter ‘National VI’ standards have come
into force in 2020, putting pressure on Chinese car manufacturers to upgrade
their test procedures, which includes careful control of temperature and
humidity during emissions testing.

Available in Australia from AMS Instrumentation and Calibration, Michell’s
Optidew 501 chilled mirror hygrometer was selected by SAIC because of its fast
response and stable, repeatable measurements. It is also highly cost-effective,
being the most economical chilled mirror instrument in its performance category.

Featuring a new hybrid chilled mirror sensor, the Optidew 501 is capable
of a response speed comparable to a polymer sensor, coupled with the stability
and accuracy of a chilled mirror instrument. The Optidew’s mirror is resistant
to corrosion and contamination and allows accurate measurements to ±0.15¡C dewpoint.

For further information, please visit the AMS Instrumentation and
Calibration website www.ams-ic.com.au or
call 03-9017 8225, or Freecall (NZ) 0800 442 743.

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