Method and system for monitoring the quality of a water purifica

Details Method and system for monitoring the quality of a water purifica Method and system for monitoring the quality of a water purifica

1994-07-15

1995-09-12

Voeltz, Emanuel T.

Boots, shoes, and leggings

364502, 36455101, 324694, G01R 2316

Patent

active

054503582

ABSTRACT:
A water quality monitoring system (30) assessing the performance of a water purification apparatus (10) which compares the current percentage differential ion concentration or rejection ratio (R.sub.x), between the upstream inlet (12) and downstream outlet (14) of the purification apparatus (10), with a previous sequence of rejection ratios (R.sub.1, . . . R.sub.n) to determine the true performance of the water purification apparatus (10). Each R.sub.x value is determined at a different selected time for use in conjunction with a computation device (40) interconnected between a comparator device (38), calculating R.sub.x, and a storage mechanism (42), storing the sequence of (R.sub.1, . . . R.sub.n) values. The computation device (40) computes a performance value (PV) which is an indication of the filter membrane performance. This performance value is calculated according to a predetermined formula which incorporates the rejection ratios (R.sub.1, . . . R.sub.n) as variables. The method of monitoring the quality of water comprises the steps of determining a specific rejection ratio (R.sub.x) in the ion concentration between the upstream water supply (12) and the downstream product water output (14) at a selected time. The next step includes calculating a Performance Value PV by the computation device (40) according to the predetermined equation by incorporating a sequence of rejection ratios (R.sub.1, . . . R.sub.n). Finally, comparing the PV to a predetermined range of values corresponding to a calibrated scale in order to evaluate the overall performance of the water purification apparatus (10).

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