Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1994-01-25
1996-11-26
Hofsass, Jeffery
Communications: electrical
Condition responsive indicating system
Specific condition
250573, 250574, 356 37, 356338, 356339, 356442, G08B 2100
Patent
active
055789951
ABSTRACT:
An improved method of monitoring condensate quality in a condensate return system and of controlling the level of particulate matter in the condensate flow so that when this level exceeds an acceptable limit, valves for discharging the condensate flow from the system open automatically or, alternately, an alarm is sounded. Utilization of the method facilitates the conservation of hot steam condensate for reuse in a boiler while preventing water contaminated with particulate matter from returning to the boiler, thereby protecting it from certain types of deposits and corrosion. The improved method includes measuring, on a continuous basis, relative numbers of particulate-type impurities under conditions in which rust or other particles large enough to block flow into a particle counter can be produced in sudden surges. Tests show that a suitable instrument for measuring the impurities under such conditions is a particle monitor. In the improved method, the only restriction on the size of the particles to be monitored is that the particles be small enough to pass through vinyl tubing having an inner diameter of about 3 millimeters.
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ChemTrac Systems, Inc., Precise Water Treatment Control, Dynamic Light Obscuration-DLO, PM 2500.
Bryant Robert L.
Veal Charles R.
Chemtrac Systems, Inc.
Hofsass Jeffery
Leon Harry I.
Lieu Julie B.
Steadman Vivian L.
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