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Programmable additive controller

  • US 5,118,008 A
  • Filed: 12/07/1990
  • Issued: 06/02/1992
  • Est. Priority Date: 12/07/1990
  • Status: Expired due to Fees
First Claim
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1. Programmable additive controller apparatus for the chemical industry, comprising an additive supply line, a filter connected to the additive supply line, a control valve connected to the filter for controlling flow of additive from the supply line, a flowmeter connected to the control valve for measuring flow of additive, the flowmeter having a signal output for indicating additive volumes flowing through the flowmeter, a controller connected to the control valve for cyclically opening the control valve upon a command pulse, the controller having an input for inputting a quantity of additive to be added on each cycle and the controller having an opener for opening the control valve, the controller having an accumulator for accumulating signal output from the flowmeter and the controller having a comparator for comparing accumulated signal output from the flowmeter and the input quantity, and having a closing control for closing the control valve and preventing further flow of additive when the accumulated flowmeter signal output approaches the input quantity, and further comprising an output connected to the flowmeter for ejecting the additive into a main material flow.

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