Circulating liquid flow detecting apparatus in a machine for aut

Details Circulating liquid flow detecting apparatus in a machine for aut Circulating liquid flow detecting apparatus in a machine for aut

1988-05-05

1989-06-20

Mathews, A. A.

Fluid handling

Flow affected by fluid contact, energy field or coanda effect

Means to regulate or vary operation of device

137392, G03D 306

Patent

active

048413216

ABSTRACT:
An apparatus for detecting circulating liquid flow in a machine for automatically processing a photographic light-sensitive material is disclosed in which a branch pipe opened at a position higher than a liquid level of a processing liquid is vertically provided on the suction side of a circulating pump of a processing liquid circulating system provided outside a processing tank for circulating the processing liquid in the processing tank. A liquid level detecting electrode is provided in said opening portion so that the lower end of the electrode is positioned on the same level as or a position a little lower than the liquid level of the processing tank. A contact electrode is provided so as to be in contact with the processing liquid.

REFERENCES:
patent: 4480901 (1984-11-01), Osegowitsch et al.
patent: 4688917 (1987-08-01), Muller et al.

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