A probe for measuring the amplitude of high frequency pressure pulses in a high or low temperature fluid environment comprising a hollow housing structure having an open end covered by a flexible metallic diaphragm member. A transducer is located in the housing and is forcibly maintained in direct engagement...http://www.google.com/patents/US4165654?utm_source=gb-gplus-sharePatent US4165654 - High response rate pressure pulse sensing probe with wide temperature range applicability
