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Title: Electronic field permeameter

Abstract

For making rapid, non-destructive permeability measurements in the field, a portable minipermeameter of the kind having a manually-operated gas injection tip is provided with a microcomputer system which operates a flow controller to precisely regulate gas flow rate to a test sample, and reads a pressure sensor which senses the pressure across the test sample. The microcomputer system automatically turns on the gas supply at the start of each measurement, senses when a steady-state is reached, collects and records pressure and flow rate data, and shuts off the gas supply immediately after the measurement is completed. Preferably temperature is also sensed to correct for changes in gas viscosity. The microcomputer system may also provide automatic zero-point adjustment, sensor calibration, over-range sensing, and may select controllers, sensors, and set-points for obtaining the most precise measurements. Electronic sensors may provide increased accuracy and precision. Preferably one microcomputer is used for sensing instrument control and data collection, and a second microcomputer is used which is dedicated to recording and processing the data, selecting the sensors and set-points for obtaining the most precise measurements, and instructing the user how to set-up and operate the minipermeameter. To provide mass data collection and user-friendly operation, themore » second microcomputer is preferably a lap-type portable microcomputer having a non-volatile or battery-backed CMOS memory.« less

Inventors:
 [1];  [2];  [2];  [3];  [2]
  1. (Madison, WI)
  2. (Austin, TX)
  3. (Roundrock, TX)
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA
OSTI Identifier:
867099
Patent Number(s):
4864845
Assignee:
Board of Regents University of Texas System (Austin, TX) SNL
DOE Contract Number:  
AC04-76
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
electronic; field; permeameter; rapid; non-destructive; permeability; measurements; portable; minipermeameter; manually-operated; gas; injection; tip; provided; microcomputer; operates; flow; controller; precisely; regulate; rate; sample; reads; pressure; sensor; senses; automatically; supply; start; measurement; steady-state; reached; collects; records; data; shuts; immediately; completed; preferably; temperature; sensed; correct; changes; viscosity; provide; automatic; zero-point; adjustment; calibration; over-range; sensing; select; controllers; sensors; set-points; obtaining; precise; increased; accuracy; precision; instrument; control; collection; dedicated; recording; processing; selecting; instructing; user; set-up; operate; mass; user-friendly; operation; lap-type; non-volatile; battery-backed; cmos; memory; provide increased; permeability measurements; gas supply; flow control; gas flow; flow rate; pressure sensor; data collection; flow controller; increased accuracy; gas injection; rate data; /73/702/

Citation Formats

Chandler, Mark A., Goggin, David J., Horne, Patrick J., Kocurek, Gary G., and Lake, Larry W. Electronic field permeameter. United States: N. p., 1989. Web.
Chandler, Mark A., Goggin, David J., Horne, Patrick J., Kocurek, Gary G., & Lake, Larry W. Electronic field permeameter. United States.
Chandler, Mark A., Goggin, David J., Horne, Patrick J., Kocurek, Gary G., and Lake, Larry W. Sun . "Electronic field permeameter". United States. https://www.osti.gov/servlets/purl/867099.
@article{osti_867099,
title = {Electronic field permeameter},
author = {Chandler, Mark A. and Goggin, David J. and Horne, Patrick J. and Kocurek, Gary G. and Lake, Larry W.},
abstractNote = {For making rapid, non-destructive permeability measurements in the field, a portable minipermeameter of the kind having a manually-operated gas injection tip is provided with a microcomputer system which operates a flow controller to precisely regulate gas flow rate to a test sample, and reads a pressure sensor which senses the pressure across the test sample. The microcomputer system automatically turns on the gas supply at the start of each measurement, senses when a steady-state is reached, collects and records pressure and flow rate data, and shuts off the gas supply immediately after the measurement is completed. Preferably temperature is also sensed to correct for changes in gas viscosity. The microcomputer system may also provide automatic zero-point adjustment, sensor calibration, over-range sensing, and may select controllers, sensors, and set-points for obtaining the most precise measurements. Electronic sensors may provide increased accuracy and precision. Preferably one microcomputer is used for sensing instrument control and data collection, and a second microcomputer is used which is dedicated to recording and processing the data, selecting the sensors and set-points for obtaining the most precise measurements, and instructing the user how to set-up and operate the minipermeameter. To provide mass data collection and user-friendly operation, the second microcomputer is preferably a lap-type portable microcomputer having a non-volatile or battery-backed CMOS memory.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}

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