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

Patent · Sat Jan 01 00:00:00 EST 1994

OSTI ID:869116

Campbell, Melvin D ^[1]

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1. Richland, WA

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.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• DOE Contract Number: AC06-76RL01830
• Assignee: Battelle Memorial Institute (Richland, WA)
• Patent Number(s): US 5277054
• OSTI ID: 869116
• Country of Publication: United States
• Language: English

Related Subjects

apparatus
in-situ
calibration
instruments
measure
fluid
depth
provides
method
distance
measuring
equipment
comprises
obtaining
measurement
location
precisely
calculating
constant
applied
specifically
level
embodied
pressure
transducer
spacer
length
calculate
subsequent
single
measurements
submerged
position
pressure measurement
method comprises
pressure transducer
pressure measurements
method comprise
measuring equipment
situ calibration
in-situ calibration
fluid level
single pressure
measure fluid
distance measurement
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