FS-925/FS-926(E) – Exi Intrinsically Safe ATEX Flow Switch

ATEX intrinsically safe version of the standard FS-925/926(E) flow switch.

The FS-925/926(E) ranges of precision-calibrated ATEX flow switch provides reliable and consistent performance; repeatability is within 1%. FS-925E and FS-926E units are factory preset for actuation at specified flow rates. These switches provide accurate detection of excessive or insufficient flow rates in such applications as: protecting against loss of fluid flow in hydraulic systems, assuring proper coolant flow in semiconductor processing equipment, monitoring high pressure lubrication systems, and ensuring proper air flow in water/waste systems.


When the magnetic field of permanent magnet inside the shuttle or piston is moved into the proximity of the reed switch inside the stationary stem, the reed switch contacts “snap” together and closes the electrical circuit. When the magnetic field is moved away from the reed switch, the reed switch contacts move apart and the circuit is opened.



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Max. flow
12 l/min ( FS-925) 3 l/min ( FS-926 )
Set points (l/min)
0.4 to 6.0 l/min ( FS-925) 0.05 to 0.3 ( FS-926)
Switching function
G 1/4”
IP 65
Brass or Stainless steel