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Preliminary flight prototype silver ion monitoring systemThe design, fabrication, and testing of a preliminary flight prototype silver ion monitoring system based on potentiometric principles and utilizing a solid-state silver sulfide electrode paired with a pressurized double-junction reference electrode housing a replaceable electrolyte reservoir is described. The design provides automatic electronic calibration utilizing saturated silver bromide solution as a silver ion standard. The problem of loss of silver ion from recirculating fluid, its cause, and corrective procedures are reported. The instability of the silver sulfide electrode is discussed as well as difficulties met in implementing the autocalibration procedure.
Document ID
19740021656
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Brady, J. (Beckman Instruments, Inc. Anaheim, CA, United States)
Date Acquired
September 3, 2013
Publication Date
June 1, 1974
Subject Category
Instrumentation And Photography
Report/Patent Number
NASA-CR-134361
FR-2656-101
Accession Number
74N29769
Funding Number(s)
CONTRACT_GRANT: NAS9-13387
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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