912 ULS Oil Pressure Switch

Hi Karl,

are you sure this is a switch only not a sensor (which is what usually sits in that position). Cause it needs replacement due to the mechanical defect of the spade…

Regards

Peter

Hi Karl

Peter  is correct, this is not a Rotax sensor.  It appears to be an aftermarket part so perhaps it is something to match your instrument.  I would try asking this question to a CT forum as they might know what was used back in that model. 

Rotax has only used VDO, very old versions.  They then made a change to Honeywell and now it is a Keller sensor.  This picture is something different. 

Cheers

Flight Design back then used the VDO from Rotax with the brass vibration dampener. Yes this one needs replacement.

D

Hi chaps, 

Yes it's a a switch rather than an analogue sensor, the answer  to my question is it is normally closed and opens under pressure if anyone reads this in the future.

Thanks,

Karl