From Death Valley to Antarctica in 30 seconds

16 May 2018

RHEINTACHO FC und FE rotational speed sensors have proven themselves for years under difficult conditions in many applications. However, in connection with a customer project, a test like this has never been previously required or executed.

Based on his experience of his devices in the field and the high disturbance potential when using (electronic) components under difficult conditions, our customer had extremely high requirements on the stability of his components, and in this case the rotational speed sensors, against temperature changes.

The RHEINTACHO Project Team designed a combination for this application consisting of two rotational speed sensors from the modular system of RHEINTACHO: mechanically it is based on the FC sensor and electronically on the FE sensor version as a 2-channel hall-difference sensor. It is also suitable for detecting rotational speed and direction as well as being able to detect standstill (0 Hz). The connection interface uses a common type of Deutsch-plug. The protection class of the sensor is IP6K9K / IP67.

Due to the intelligent and modern electronic layout, the mechanical and electronics are very capable of withstanding extreme temperature change stress. And as such, the development team at RHEINTACHO was very excited to see the test results for the test procedure as follows.

The test procedure is very simple and extremely demanding:

  • 1,000 change cycles between -40°C and 125°C. The change time between the temperature limits is a maximum of 30 seconds. The dwelling time at the temperature limits is 40 minutes each.
  • The impressive result: all tested rotational speed sensors passed the “torture“ test being fully functional afterwards.

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