The HHLT-1 series CE-compliant ultrasonic leak detector features an ultrasonic sound range of 20 to 100 kHz. It suits many applications including pressure and vacuum system leak detection, exhaust system, tanks and pipe leak testing as well as steam trap inspection and gas leaks in general. Others include chemical processing, refrigeration, vacuum, and steam traps. Price starts at $290. A datasheet is available at http://www.omega.com/pptst/HHLT-1.html
Omega Engineering Inc.