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A coolant flow switch is used to indicate loss of liquid coolant flow within a closed loop. A normally open flow switch will indicate the proper flow by closing when the coolant flow rate is above the switches setpoint. If the flow rate drops below the setpoint then the switch will open and turn off the system to prevent damage to equipment and to keep personnel safe.
FS-380P Series Flow Switches are rugged inline flow switches that resist clogging as well as metal versions. FS-380P is an ideal choice for coolant applications requiring reliable flow detection in HVAC, semiconductor, welding, medical and other...
FS-380 Series Flow Switch is a rugged, inline flow switch that uses 100 micron filtration and is less susceptible to clogging than other high-pressure inline flow switches. The one-piece magnetic PPS composite piston makes the FS-380 ideal for...
FS-4 Series Flow Switches make flow protection economical for a broad range of industrial applications such as welders, lubrication systems, medical sterilizers and laundry chemicals dispensing. Applications include: Electronic Equipment (Laser...
FS-200 Series Flow Switches offer accurate flow detection, with 1% repeatability, over a broad range of flow settings and port sizes. Its durable construction delivers long-life reliability in either water or oil. Generous flow paths keep pressure...
FS-480 Series Flow Switch is a large-body inline flow switch that delivers ample flow rates with minimal pressure drop an is ideal for processes that push more fluid through their systems and demand low pressure drops. The FS-480 is ideal for...
View the Gems Sensors & Controls FS-380P Series catalog page.
Download the Gems Sensors & Controls FS-380P installation instructions bulletin.
Learn how the low pressure drop design ensures reliable flow detection.
Download the Gems Sensors & Controls FS-380 installation instructions bulletin.
Download the Gems Sensors & Controls FS-480 installation instructions bulletin.
Download the Gems Sensors & Controls FS-4 installation instructions bulletin.
Download the Gems Sensors & Controls FS-200 and FS-400 installation instructions bulletin.
Can a flow switch handle more flow than the flow set point?
A flow switch can typically handle a greater flow rate than its flow setting. Many flow switches are set 4 times less than the actual operating flow rate. As flow rate increases, pressure drop also increases, eventually causing a restriction of flow.
Can a flow switch be mounted at an angle?
Yes, piston and shuttle type switches utilizes a small, strong spring, that is not bothered by the mounting attitude of the flow switch and will perform at any orientation. The exception is our FS-400P, which is spring less.
Can a flow switch be cleaned?
Yes. The design facilitates cleaning by flushing out the flow switch with clean water. Some flow switches have removable parts for a more thorough cleaning.
Are flow switches set on the rise or the fall?
Typically, catalog units are set on the rise. Rising set points are most commonly used in coolant loops to insure proper flow. Switches can be calibrated on the fall when required.
