Apparatus for ascertaining and/or keeping constant the mixing ra

Details Apparatus for ascertaining and/or keeping constant the mixing ra Apparatus for ascertaining and/or keeping constant the mixing ra

1985-03-08

1986-07-22

Nilson, Robert G.

Fluid handling

Self-proportioning or correlating systems

Mixture condition maintaining or sensing

73452, 73453, G05D 1113

Patent

active

046013067

ABSTRACT:
In the case of an apparatus for ascertaining and keeping constant the concentration of alcohol in the plate dampening fluid used in an offset litho press, having a float vessel with an inlet and an overflow such that the float controls the supply of alcohol in accordance with its level relative to the fluid, a high degree of accuracy and a simple possibility of displaying and storing the concentration data is made possible by having a marker mounted on the float and having a vertical scale of zones marked thereon which may be sensed without mechanical contact by a sensing device at a fixed height. Furthermore the sensing device has a control signal output connected with a controller which is furthermore acted upon by a set point signal and has at least one output signal connection for controlling a valve regulating the supply of alcohol to said fluid.

REFERENCES:
patent: 2543522 (1951-02-01), Cohen
patent: 3994175 (1976-11-01), Yamaguchi
patent: 4398554 (1983-08-01), Kondo
patent: 4474204 (1984-10-01), West

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