Measuring and testing – Sampler – sample handling – etc. – Withdrawing through conduit or receptacle wall
Patent
1997-04-28
1998-09-01
Williams, Hezron E.
Measuring and testing
Sampler, sample handling, etc.
Withdrawing through conduit or receptacle wall
73 106, 62 78, 99468, 422 3, 422 83, 426231, 426418, 426419, G05B 1500, A61L 900
Patent
active
058013172
ABSTRACT:
A controller for use in a system employing selective permeable membrane technology to maintain a controlled atmosphere within a refrigerated container. The controller is electrically interfaced to an oxygen and carbon dioxide sensing device which is disposed within the container and capable of withstanding severe environmental conditions to measure the levels of oxygen and carbon dioxide within the container. The controller maintains preset levels of oxygen and carbon dioxide within the container and is adapted to calibrate the carbon dioxide and oxygen sensing devices as well as check for proper operation of the sensing devices and default to safety conditions when a failure is detected. The controller is further adapted to control the atmosphere maintenance system in a manner adapted not to increase the peak power requirements of the system.
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Harrison Todd I.
Hsei Paul K.
Liston Max D.
Larkin Daniel S.
Williams Hezron E.
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