Calibration system and method for making

Details Calibration system and method for making Calibration system and method for making

1993-05-24

1994-09-20

Alexander, Lyle A.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

422 81, 422103, 436 8, 128DIG12, G01N 2100

Patent

active

053487060

ABSTRACT:
An endless loop calibration system comprising a sensor cassette having a flow-through passage and at least one sensor to be calibrated, a chamber coupled to the sensor cassette to define an endless loop, a calibration liquid in the endless loop, and a valve element which is employed to prevent the flow of calibration liquid through the endless loop. This valve element, preferably carried by a housing, urges a tube compressor to squeeze a compressible tube against a curved wall surface sufficiently to prevent fluid from flowing in the compressible tube across the zone, and to maintain the at least one sensor in the sensor cassette wet with calibration liquid for long term storage of the calibration system.

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