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Title: Portable high precision pressure transducer system

A high precision pressure transducer system is described for checking the reliability of a second pressure transducer system used to monitor the level of a fluid confined in a holding tank. Since the response of the pressure transducer is temperature sensitive, it is continually housed in an battery powered oven which is configured to provide a temperature stable environment at specified temperature for an extended period of time. Further, a high precision temperature stabilized oscillator and counter are coupled to a single board computer to accurately determine the pressure transducer oscillation frequency and convert it to an applied pressure. All of the components are powered by the batteries which during periods of availability of line power are charged by an on board battery charger. The pressure readings outputs are transmitted to a line printer and a vacuum fluorescent display. 2 figures.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
5033709
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; EDB-94-076634
Patent Number(s):
US 5305642; A
Application Number:
PPN: US 7-868149
Contract Number:
AC07-84ID12435
Resource Relation:
Patent File Date: 14 Apr 1992
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 47 OTHER INSTRUMENTATION; CALIBRATION STANDARDS; DESIGN; LEVEL INDICATORS; TRANSDUCERS; LEVELS; PORTABLE EQUIPMENT; STORAGE FACILITIES; TEMPERATURE CONTROL; CONTROL; EQUIPMENT; MEASURING INSTRUMENTS; STANDARDS; 420205* - Engineering- Transport & Storage Facilities- (1980-); 440800 - Miscellaneous Instrumentation- (1990-)