Flight-Critical Precision Since 1965
Thermometrics Corporation has supplied temperature sensing solutions to the aerospace industry for nearly six decades. Our AS9100D certified quality management system ensures every sensor assembly meets the rigorous standards required for flight-critical and mission-critical applications across commercial aviation, military defense, and space exploration programs.
From prototype development through full-rate production, our in-house engineering team works directly with aerospace OEMs, Tier 1 suppliers, and MRO facilities to design temperature sensor assemblies that withstand the extreme environments encountered in modern aerospace systems — including severe vibration, rapid thermal cycling, high altitude, and corrosive fluid exposure.
AS9100D Quality System
Our quality management system is certified to AS9100 Rev D, the internationally recognized standard for aerospace quality. This includes full risk-based thinking, configuration management, counterfeit parts prevention, and documented first article inspection per AS9102.
NADCAP Considerations
Thermometrics supports NADCAP pyrometry requirements for heat treatment monitoring and can supply sensors that meet NADCAP-accredited facility specifications for calibration and measurement traceability.
Aerospace Application Areas
Our aerospace temperature sensors are deployed across every major aircraft and spacecraft subsystem where accurate, reliable temperature data is critical to safety and performance.
Engine Monitoring
Exhaust gas temperature (EGT), turbine inlet temperature (TIT), and bearing temperature monitoring for turbofan and turboprop engines. Type K and N thermocouples for high-temperature zones; PT100 RTDs for bearing and oil system monitoring. Designed for continuous operation in high-vibration, high-temperature environments up to 1100°C.
Environmental Control Systems
Cabin air, bleed air, and pack temperature monitoring for ECS units. Fast-response RTD sensors with response times under 2 seconds for precise temperature regulation. Miniature assemblies that fit space-constrained ECS ducting with MIL-DTL-38999 connectors for reliable signal transmission.
Fuel Systems
Fuel temperature monitoring for tanks, lines, and heat exchangers. Explosion-proof and intrinsically safe designs prevent ignition risk. Teflon-insulated leads and stainless steel sheaths resist jet fuel corrosion. Temperature range from -65°C (cold soak at altitude) to +150°C for fuel return lines.
Hydraulic Systems
Hydraulic fluid temperature monitoring for flight control actuators, landing gear, and utility systems. Spring-loaded RTD probes for thermowell installations in hydraulic reservoirs and return lines. Operating range -54°C to +135°C with pressure ratings to 5,000 PSI.
Cryogenic Systems
Liquid oxygen (LOX), liquid nitrogen (LN2), and liquid hydrogen (LH2) temperature measurement for launch vehicle propulsion and spacecraft life support. Specialized cryogenic RTD assemblies rated to -196°C with hermetically sealed housings and radiation-resistant insulation for space applications.
Avionics & Electronics
Printed circuit board (PCB) and avionics bay temperature monitoring. Miniature surface-mount RTD elements and thermocouple probes for electronic enclosure thermal management. High-accuracy Class A sensors for precise temperature compensation in navigation, communication, and flight control electronics.
Aerospace Sensor Assemblies
These product families are most commonly specified for aerospace applications. All are available in custom configurations to meet your specific drawing or specification requirements.
Aerospace RTD Sensors
Purpose-built RTD assemblies for aerospace applications featuring platinum elements per IEC 60751, MIL-spec connectors, and environmental qualification testing. Available in PT100 and PT1000 configurations.
- -196°C to +850°C range
- Class A accuracy: ±(0.15 + 0.002·|t|)°C
- MIL-DTL-38999 connectors
- Vibration rated per MIL-STD-810
Aerospace Thermocouples
MIMS thermocouple assemblies for engine, exhaust, and high-temperature aerospace applications. Types K, N, R, and S available with Inconel 600 or ceramic protection tubes.
- Range to +1700°C (Type R, S)
- MIMS construction for durability
- Inconel 600, ceramic sheaths
- Grounded and ungrounded junctions
Bearing Temperature Sensors
Miniature RTD and thermocouple assemblies designed for engine, APU, and gearbox bearing monitoring. Spring-loaded for positive contact with Babbitt-compatible low-profile housings.
- Miniature form factor (3mm OD)
- Spring-loaded element
- PT100 3-wire standard
- Vibration and shock rated
Aerospace Sensor Specifications
| Parameter | RTD Sensors | Thermocouples |
|---|---|---|
| Temperature Range | -196°C to +850°C | -200°C to +1700°C |
| Accuracy | Class A per IEC 60751 | Special limits per ASTM E230 |
| Sheath Materials | 304 SS, 316 SS, Inconel 600 | Inconel 600, 310 SS, Ceramic |
| Connectors | MIL-DTL-38999, MIL-DTL-26482 | MIL-DTL-38999, bayonet |
| Vibration Rating | Per MIL-STD-810G, Method 514.7 | Per MIL-STD-810G, Method 514.7 |
| Thermal Cycling | Per MIL-STD-810G, Method 503.6 | Per MIL-STD-810G, Method 503.6 |
| Altitude | Operational to 100,000 ft | Operational to 100,000 ft |
| Documentation | FAI/FAIR per AS9102, COC, NIST cal | FAI/FAIR per AS9102, COC, NIST cal |
Environmental Testing
All aerospace sensor assemblies can be qualified to MIL-STD-810 environmental test methods including vibration (Method 514), thermal shock (Method 503), altitude (Method 500), humidity (Method 507), and salt fog (Method 509). Contact our engineering team to discuss your specific qualification requirements.
Your Aerospace Sensor Partner
Built for the Most Demanding Applications
When failure is not an option, aerospace engineers rely on Thermometrics. Every sensor we build for aerospace applications goes through our AS9100D quality system — from incoming material inspection through final acceptance testing and shipment.
- AS9100D and ISO 9001:2015 dual certification
- First Article Inspection per AS9102 standard
- Full material traceability from raw stock to finished assembly
- NIST-traceable calibration with accredited uncertainty
- MIL-spec connectors and hardware from approved suppliers
- In-house vibration and thermal cycling capability
- ITAR registered for defense programs
- Counterfeit parts prevention per AS6174
Documentation That Satisfies Your QA Team
We understand that aerospace procurement requires complete documentation packages. Every order can include:
- Certificate of Conformance (COC) per AS9102
- First Article Inspection Report (FAIR)
- NIST-traceable calibration certificate with data
- Material test reports (MTRs) for all metallic components
- Certificate of compliance for wire, elements, and connectors
- Dimensional inspection reports
- Process documentation and traveler records
- RoHS and REACH compliance declarations
Ready to Spec Your
Aerospace Sensor?
Send us your drawing, specification, or application requirements. Our aerospace engineering team will review and respond with a detailed quotation within one business day.