Prevents Dry Running
No External Sensors Required
Reliable and Maintenance Free
Alternative Alarm Functions
Easy to Install
Running chemical centrifugal pumps dry (without liquid) often causes severe damage resulting in expensive repairs and unexpected downtime.
The Crest PSP1 monitor provides permanent protection against acid pump dry running by electronic monitoring—no intrusive probes are required making the PSP1 ideal for use on pumps handling aggressive and corrosive liquids.
OPERATION
The PSP1 Pump Monitor is connected directly to the drive motor cable and constantly monitors the true power consumption of the drive motor and displays this as a percentage (% kW). When the pump runs dry the motor load decreases, the relay operates and the PSP1 initiates an alarm and/or stops the pump. Three phase electric motors of any current rating can be monitored, currents greater than 8 Amps require an external current transformer.
The monitor is provided with an alarm setting which can be set to the normal working range of the chemical pumps. The PSP1 is equipped with a delayed tripping function to eliminate spurious alarms caused by temporary variations in flow. It can also be connected to process PLC’s and datalogging systems.