Accurate and reliable speed measurements under extreme temperature and vibration conditions. Meggitt’s magnetic speed probe designs are trusted by engine OEMS around the world.
Mounted on the engine or gearbox, each sensor is designed and qualified to suit the application. Over 60 designs are in service across a number of different applications with a typical mean time between failure (MTBF) of greater than 650,000 flight hours.
Meggitt’s engineering and research teams are pushing material science to the limit and are continuing to explore new high temperature materials for gas turbine engines. The team at MSS Basingstoke was part of the EU-funded research project called STARGATE (sensors towards advanced control and monitoring of gas turbine engines) that investigated a range of novel sensing techniques for gas turbines.
Applications for Vibro-Meter® speed sensors
Our speed sensors are used in the following applications:
They measure the following:
- Shaft rotational position
- Direction of rotation
- Shaft torque
- Rotor revolution
- Gas turbine shaft speed
How does a speed probe work?
A speed probe is an alternating voltage generator producing an electrical signal. The frequency of this electrical signal is proportional to the engine shaft speed. A speed probe contains one or two coils and a rare earth permanent magnet.
In rotating machinery the speed probe sensing surface faces the phonic wheel. As the magnetic flux varies in density with the passage of each tooth, these changes induce an alternating voltage in the coil surrounding the permanent magnet, the frequency of which is a function of shaft speed.
At Meggitt, we can provide you with a sensing and monitoring solution that is specific to your aerospace application and can be further customised to your particular requirements. To discuss what you need in more detail, contact us.