Gems FS-600 – Thermal Dispersion Flow Switch

Last Updates: 15/02/2021

Gems Sensors & Controls 230500-4-25


Primary Material of ConstructionAlloy
Sensor TypeThermal Dispersion
Adjustable RangeN/A
Flow Setting (GPM)4.66
Body Material316 Stainless Steel
Port Size1-1/2″ NPT Female
Switch TypeSPST (30 VAC @ 45 ma, 42 VDC @ 65 ma)
Set Point Accuracy± 15%
Maximum Pressure (PSI)300-500
Minimum Temperature (°F)-14
Maximum Temperature140
Electrical TerminationM12 x 1 (4-Pin) (1meter cable included
Set Point Differential20%
Wetted Materials316 Stainless Steel, 303 Stainless Steel
Recommended FiltrationN/A


The FS-600 series flow switch uses proven thermal dispersion technology to provide a robust no moving parts flow switch even without filtration. The solid-state sensor is compatible with both conductive and non-conductive fluids. Suitable for fluids with particulates or slurries, and is immune to changes in media viscosity. The straight through switch is designed for a long life and can be mounted in any orientation and can handle a wide range of flow rates. No moving parts mean years of reliable service.

Datasheet: Catalog-G_FS600-Series-Datasheet
Instruction Manual: Gems_FS-600_Manual

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