Temperature sensors for aerospace monitoring

Temperature measurement devices that can be installed throughout the oil system, fuel system or gas path in the engine.

Temperature sensors that measure up to 1200°C

With over 60 years' experience, Meggitt's temperature measurement systems are trusted by engine OEMs around the world.

We offer more than 60 different devices that can measure from -54°C to +1200°C (-65°F to 2192°F). Each one is designed and qualified to suit your application, and they can be installed throughout the oil system, fuel system or gas path in the engine.

Groundbreaking work in high temperature materials

Our 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.

Features and benefits

Radiation pyrometers

A non-intrusive sensor to directly measure the turbine blade temperature within a gas turbine engine:

Accuracy: 0.4% at 1000°C
Types: Infrared or two channel
Temperature: Lens 600°C, fibre optics 350°C, electronics 125°C
Environment: MIL-STD-810, nuclear hard

Resistance temperature detectors

Our platinum resistance thermometers include the following features:

Accuracy: 0.65°C at 250°C (DIN EN 60751 F0,15 (class A))
Types: Two, three or four wire systems
Temperature: 250°C
Element: Ceramic substrate, PT100 or 200
Sheaths: Aluminium, stainless steel

Thermocouples

Accuracy: 0.4% at 1000°C (ASTM E 230 ‘special limits’)
Types: Bare wire or mineral insulated with swaged tip, submerged and exposed junction
Temperature: 1200°C (short durations) 1000°C (continuous)
Element: K type to ASTM E 230
Sheaths: Stainless steel, Inconel 600, Hastelloy® alloy X, Haynes 230

Applications for Vibro-Meter® temperature sensors

Our temperature sensors are used in the following applications:

They can measure:

  • Gas turbine air inlet temperature
  • Exhaust gas temperature
  • Bleed air temperature
  • Turbine blade temperature
  • Gearbox bearing temperature

How does a radiation pyrometer work?

Radiation pyrometers consist of three main sections:

Head assembly mounted into the engine casing. This receives the infrared (IR) radiation given off by the rotating turbine blades. It uses a patented purge air system to maintain lens cleanliness.

Fiber optic bundle, made from nuclear-hard glass fibers and encased in a convoluted tube with protective stainless steel over-braid. It transmits the IR signal to the electronics assembly.

Electronics assembly converts the IR signal into two electrical signals which are amplified, temperature compensated, and fed directly into the digital engine control unit (DECU) or full authority digital engine control (FADEC).

 

 

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