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Development of an automated potable water bactericide monitoring unitA monitor unit has been developed that permits the direct determination of the level of elemental iodine, used for microbiological control, in a spacecraft potable water supply system. Salient features of unit include low weight, volume and maintenance requirements, complete automatic operation, no inflight calibration, no expendables (except electrical current) and high accuracy and precision. This unit is capable of providing a signal to a controller that, in turn, automatically adjusts the addition rate of iodine to the potable water system so that a predetermined level of iodine can be maintained. In addition, the monitor provides a reading whereby the crewman can verify that the proper amount of iodine (within a range) is present in the water. A development history of the monitor is presented along with its design and theory of operation. Also presented are the results generated through testing of the unit in a simulated Shuttle potable water system.
Document ID
19750056802
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Walsh, J. M.
Brawner, C. C.
(Beckman Instruments, Inc. Anaheim, Calif., United States)
Sauer, R. L.
(NASA Johnson Space Center Life Sciences Directorate, Houston, Tex., United States)
Date Acquired
August 8, 2013
Publication Date
July 1, 1975
Subject Category
Man/System Technology And Life Support
Report/Patent Number
ASME PAPER 75-ENAS-36
Meeting Information
Meeting: Intersociety Conference on Environmental Systems
Location: San Francisco, CA
Start Date: July 21, 1975
End Date: July 24, 1975
Sponsors: SAE, ASMA, ASME, AIChE, AIAA
Accession Number
75A40874
Distribution Limits
Public
Copyright
Other

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