Unipower HPL110/220 Installation And Operation Manual
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Typical ApplicationsSeal-less Centrifugal PumpsThese “positive pressure” pumps have a power curve which is proportional to flow rate.Power monitoring using the HPL110A, therefore, is very effective for ensuring the pumpis running within the design minimum and maximum flow limits.This is particularly true of seal-less pumps where dry-running can quickly result in damageor failure of the pump and containment system.These situations are very effectively detected by the HPL110A as “low power” alarms and,being a true power monitor, the HPL110A is far more effective at detecting under-power situations than a current sensing relay.Positive Displacement PumpsIn the case of positive displacement pumps, flow rate is constant but excessive outletrestriction results in high pressure and high power. The HPL110A provides a simple,non-intrusive monitoring function which can be effectively used to protect againstdead-heading.Again, dry-running is detrimental to the pump and results in a low power conditionwhich is also effectively monitored for with the HPL110A.Belt BreakageThe HPL110A can be used to immediately detect a low power conditions resultingfrom transmission chain or belt breakage and is far more sensitive to such "low power"conditions than a simple current sensor.The HPL110A helps avoid the damage which is easily generated when part of aproduction line is malfunctioning.Feeder BlockageThe HPL110A can be used to immediately generate a max. kW alarm when a feedermechanism is jammed or overloaded. Such applications would include belt or screwfeeders, conveyors, etc. In many cases, the HPL110A can replace mechanical shearpins and are easier to set.Many Other Applications exist including: Fans, Mixers, Crushers, Grinders, etc.73 |
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