Vaisala Corp. Helsinki, Finland

The Finnish Meteorological Institute (FMI) is delivering pressure and humidity measuring devices based on Vaisala technology for use on NASA’s next robotic mission to Mars — the Mars 2020 rover. The pressure measurement devices were finalized earlier this year; the humidity measuring instruments are now completed and ready for final testing.

The devices are provided by FMI as part of Spain’s Mars Environmental Dynamic Analyzer (MEDA) device package, which will be installed in the rover. The rover will also carry Vaisala’s pressure and humidity sensors, which have never been used on Mars terrain.

FMI’s MEDA PS and MEDA HS instruments will measure the pressure and humidity of the atmosphere of Mars. The measuring instrumentation is now calibrated and finalized; before handing it over to NASA later this year, the devices will be tested with the MEDA package’s main computer.

Vaisala’s HUMICAP® and BAROCAP® sensors are used in applications such as the Mars 2020 rover for their ability to tolerate dust, chemicals, and harsh environmental conditions.

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