Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1982-12-08
1985-03-26
Smith, Alfred E.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
2503541, 250574, 356342, 356343, 356338, 162263, G01N 2151
Patent
active
045075565
ABSTRACT:
An apparatus and method for determining the percentage of solid particles in a suspension (consistency) is provided. A source of diffused radiant energy is provided which energy is directed toward a suspension to be measured. The portion of the energy which is forward-scattered by the suspension is detected and a first signal indicative of the magnitude of the forward-scattered energy is produced. The portion of energy which is back-scattered by the suspension is detected and a second signal indicative of the magnitude of back-scattered energy is produced. The first and second signals are combined at a predetermined ratio to produce a feedback signal used to control the intensity of energy emitted from the radiant energy source. The intensity of energy emitted from the source is a function of the forward-scattered and back-scattered energy and is directly proportional to the consistency of the suspension being measured. By monitoring the power driving the radiant energy source, a display calibrated in terms of percent consistency can be provided.
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Fields Carolyn E.
Maquire Joseph M.
Smith Alfred E.
St. Regis Paper Company
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