to automatic shutdown system •{o] alarm
This ElectroniK boiling-pointrise control system makes the Stauffer evaporator operation continuous . . . eliminating a 20-minute delay between batches, ( increasing production 10 ^c.
weak acid
Evaporator now operates unat tended, with a 90r'( cut in operating cost. Uniform tem perature that results from con tinuous operation reduces scale formation, decreases ma ι η tenance 25( \ . Product concentra tion is consistently controlled within H of lc/( legend: ------process flow lines instrument air lines electrical cable ===== pressure connections (B) rotameters
concentrated acid
Control k n o w - h o w can m a k e your old equipment operate more profitably There might be plenty of u n t a p p e d potential in your present processing equipment—potential t h a t can be turned into profit by t h e skill of Honeywell field engineers in t h e application of a u t o m a t i c control. Such was the case w i t h t h e evaporator used t o concentrate t a r t a r i c acid a t Stauffer Chemical Com pany's Brooklyn p l a n t . Old and ill-behaved, it was transformed by Honeywell engineers from a man ually-operated b a t c h operation to a n automatic, continuous one . . .with t h e addition of an ElectroniK boiling-point-rise s y s t e m . H e a r t of the s y s t e m is an ElectroniK resistance thermometer t h a t uses two bulbs: one senses t h e temperature of t h e boiling liquor in t h e evaporator, t h e other t h a t of t h e boiling solvent in the reference chamber. Since t h e two bulbs are differentially
connected, the instrument measures the difference between the two temperatures. T h i s is boilingpoint-rise—a function of product concentration, and therefore a successful basis for control. This is b u t one example of how Honeywell instru mentation know-how often gives old equipment a new lease on life. Perhaps a similar application of automatic control can cut costs or add major production advantages to your own operation. Best way to find out is to h a v e Honeywell field engineers consult with your own staff. Call your nearby Honeywell field engineer today . . . he's as near as your phone. M I N N E A P O L I S - H O N E Y W E L L R E G U L A T O R C O . , Indus trial Division, W a y n e arid Windrim Avenues, Phila delphia 44, P a . — i n Canada, T o r o n t o 17, Ontario.
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1958
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