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Title: Apparatus for in-situ calibration of instruments that measure fluid depth

Abstract

The present invention provides a method and apparatus for in-situ calibration of distance measuring equipment. The method comprises obtaining a first distance measurement in a first location, then obtaining at least one other distance measurement in at least one other location of a precisely known distance from the first location, and calculating a calibration constant. The method is applied specifically to calculating a calibration constant for obtaining fluid level and embodied in an apparatus using a pressure transducer and a spacer of precisely known length. The calibration constant is used to calculate the depth of a fluid from subsequent single pressure measurements at any submerged position. 8 figures.

Inventors:
Issue Date:
OSTI Identifier:
5179731
Patent Number(s):
5277054
Application Number:
PPN: US 7-813339
Assignee:
Battelle Memorial Inst., Richland, WA ()
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Resource Relation:
Patent File Date: 23 Dec 1991
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; LEVEL INDICATORS; CALIBRATION; DISTANCE; PRESSURE MEASUREMENT; TRANSDUCERS; MEASURING INSTRUMENTS; 440800* - Miscellaneous Instrumentation- (1990-)

Citation Formats

Campbell, M D. Apparatus for in-situ calibration of instruments that measure fluid depth. United States: N. p., 1994. Web.
Campbell, M D. Apparatus for in-situ calibration of instruments that measure fluid depth. United States.
Campbell, M D. Tue . "Apparatus for in-situ calibration of instruments that measure fluid depth". United States.
@article{osti_5179731,
title = {Apparatus for in-situ calibration of instruments that measure fluid depth},
author = {Campbell, M D},
abstractNote = {The present invention provides a method and apparatus for in-situ calibration of distance measuring equipment. The method comprises obtaining a first distance measurement in a first location, then obtaining at least one other distance measurement in at least one other location of a precisely known distance from the first location, and calculating a calibration constant. The method is applied specifically to calculating a calibration constant for obtaining fluid level and embodied in an apparatus using a pressure transducer and a spacer of precisely known length. The calibration constant is used to calculate the depth of a fluid from subsequent single pressure measurements at any submerged position. 8 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}