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Performance Validation of a Liquid Carry Over Sensor Developed for Space Applications
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English
Abstract
A unique Liquid Carry Over Sensor (LCOS) is being developed as part of the condensing heat exchanger and filter assembly (CHXFA). The CHXFA is used in the Environmental Control and Life Support System (ECLSS) of the Columbus Orbital Facility (COF), the European Module of the International Space Station (ISS).
The LCOS is designed to monitor the performance of the condensing heat exchanger assembly and the COF air-water separator by detecting water within 2 mm of the sensor element surface. The sensor has been designed to fit flush with duct wall, with no intrusion into the air flow. The sensor surface has a fused glass finish with very low porosity and near zero water retention, and is able to detect extremely small levels of moisture. The LCOS design is based on a capacitive technology which is largely insensitive to contaminants, unlike competitive resistive technologies, thereby ensuring maintenance free, long lifetime performance which is a requirement of all ISS applications.
This paper describes performance testing of the LCOS, and details some of the design features unique to this type of sensor.
Authors
Citation
McConville, K., Cragg, S., Shook, R., Roux, P. et al., "Performance Validation of a Liquid Carry Over Sensor Developed for Space Applications," SAE Technical Paper 981571, 1998, https://doi.org/10.4271/981571.Also In
References
- Fourquet H. Carpentier P. Rolland A. Martin C. Pickup H. Proceedings of the 28th International Conference on Environmental Systems July 13 16 1998
- Weisser C. System for detecting airframe ice and snow during ground operation completes in-service trial International Civil Aviation Organization (ICAO) Journal October 1994
- McConville K. Lavenir M. Seurig R. Barnes J. Inkpen S. Spearns H. Development of a Liquid Carry Over Sensor for monitoring the performance of Condensing Heat Exchangers 27th International Conference on Environmental Systems July 14 17 1997