Fixed setting flow switch with inline flow and molded PFA body

The operating principle is based on a free floating magnetic piston which responds only to the motion of fluids within the line, not to static or system pressures. In the presence of fluid flow, controlled movement of the piston actuates an external hermetically sealed reed switch. This switch can be used to actuate audible or visual alarms, as well as relays, or other controls. The piston's movement can be seen through the PFA body.

Applications

• Sample flow monitoring
• Alarm actuation
• Purge flows
• Loss of flow protection
• Semiconductor etch tools
• Laser cooling equipment

Standard Specifications

Set Point Accuracy	±10% maximum
Repeatability	±2%
Hysteresis	15% (lower hysteresis on request)
Body Material	PFA
Port Sizes	1/4", 3/8" Flare
Flow Ranges
Air	300 – 55000 sccm
Water	10 – 1600 mL/min

Product Data Sheet