Temperature Compensation and Improvement of the NRL Thermistor-Bridge Gas Leak Detector

摘要

The NRL thermistor-bridge gas leak detector is a portable electronic device having wide utility for the location of leaks from pressurized systems containing gas or gases having a thermal conductivityy different from that of the ambient air. The effects of ambient temperature variations upon its sensitivity are discussed, and simple design modifications are prescribed to provide effective tempera ture compensation and a significant improvement in sensitivity. The recommended design modifications are expected to greatly enhance its performance capabilities for applications at lowered temperatures such as may be encountered aboard surface ships and at shore establishments. (Author)