Sample flow cell for automatic halogen and pH control for water

Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing liquid or solid sample

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204 1T, 204409, 204433, 210 94, 210 961, 210140, 210169, 324 65P, G01N 2738

Patent

active

045500118

ABSTRACT:
A cylindrical closed housing formed of clear material provides a test flow cell for monitoring the halogen and pH level in a flowing liquid stream. The cylindrical housing includes a circumferential, longitudinally extending side surface with front and back end surfaces secured to the circumferential cylindrical surface to form the closed, hollow housing test cell. The housing has a first inlet opening at one side for the liquid stream; an outlet opening for the liquid stream at the top of the housing and a second inlet opening for acid at the bottom of the housing. A pair of additional openings, one on each side of the outlet opening receives and positions electronic sensing probes diagonally within the test flow cell; the probes terminate between the top outlet and bottom second inlet openings and opposite the first inlet side opening.
A controller includes circuitry which enables the halogen and pH levels desired in a reservoir of water to be preset. The sensing probes measure the actual halogen and pH levels in the reservoir water, and the actual and preset levels are continuously compared by a comparator circuit in the controller. When the measured halogen level is below the set halogen level, additional halogen is injected in the reservoir water. A timer provides a timed electric signal at a predetermined interval to actuate pump means to inject muriatic acid during the timed signal period into the reservoir water if the measured pH is higher than the preset pH level of the reservoir water.

REFERENCES:
patent: 3178901 (1965-04-01), Blackett
patent: 3298934 (1967-01-01), Angeleri
patent: 3714039 (1973-01-01), Lancy et al.
patent: 4016078 (1977-04-01), Severin
patent: 4033871 (1977-07-01), Wall
patent: 4064047 (1977-12-01), Bernreiter et al.
patent: 4126550 (1978-11-01), Doerschlag
patent: 4129479 (1978-12-01), Morrow
patent: 4435291 (1984-03-01), Malsko

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