Gems RFS Type Electronic Flow Sensor

Last Updates: 15/02/2021

Gems Sensors & Controls 155485


RotorFlow® Switches build an extra level of reliability and protection into your equipment. By principle of operation, the rotor cannot be deceived into indicating a positive flow situation when no flow actually exists. Once set to a desired actuation point, RotorFlow® will switch to a “no-flow” condition should the rotor stop for any reason. 

Sensor TypeRFS
Low Flow Range (GPM)1.5 – 12.0
Standard Flow Range (GPM)4.0 – 20.0
Flow Range (GPM)1.5-20.0
Body MaterialPolypropylene
Port Size1/2″ NPT Female
Input Power24 VDC
OutputSPDT (1 amp)
Low Flow Accuracy±5% (factory set)
Standard Flow Accuracy±5% (factory set)
Maximum Pressure (PSI)100
Minimum Temperature (°F)-20
Maximum Temperature (°F)180
Electrical Termination22 AWG, 24″-26″ PVC Leads
Wetted MaterialsPolypropylene, Ceramic, PPS Composite, Polysulfone, Buna N (Low Flow Adapter – Polypropylene)
ApprovalsUL Recognized, CE
Recommended Filtration150 micron


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