OMEGA Engineering, Inc. Datasheets for Flow Switches

Flow switches are devices that monitor flow and send a trip signal to other devices, like a pump, for protection. These switches can be used for the measurement of gases, liquids, and steam.
Flow Switches: Learn more

Product Name Notes
Flow Monitor for Corrosive Fluids -- FL-X FL-X Series variable-area flowrate indicators utilize fluid movement to actuate a swinging vane, which drives the scale pointer and triggers the signal switch. The corrosion-resistant construction includes no breakable tubes,...
Trim-To-Size Paddle Type Switch -- FSW-21 / FSW-22 FSW-20 series paddle-type switches easily install into pipes ranging in size from 1¼" on up using an ordinary pipe tee or threaded weld coupling. The paddle pivots to move out...
In-Line Flowmeter With Limit Switches -- FL-6100
In-Line Flowmeter With Limit Switches -- FL-6300
In-Line Flowmeter With Limit Switches -- FL-6700
In-Line Flowmeter With Limit Switches -- FL-7600
OMEGA ® in-line flowmeters offer high accuracy flow rate indication for oil or water and the ability to either control the flowrate or alarm on high or low flowrates. These...
Thermal Dispersion Liquid Flow Switch -- FST-200 OMEGA® FST-200 Series flow switches use thermal dispersion technology to create a very accurate and economical method of sensing flow. Monitor fluids from 0.4 to 1.2 specific gravity, 1 to...
Rugged Economical Flowmeter -- FL-W The FL-W Series of water flow monitors can be used with flows from 1 gph up to 90 gpm. These flowmeters utilize the fluid’s movement to actuate a swinging vane...
Liquid Flow Transmitter -- FPR-200 The FPR-200 series flowrate sensor integrates rugged tangential turbine technology with a precision digital-to-analog conversion circuit hermetically encapsulated within the body of the sensor. The flow sensor is ideal for...
Liquid Flow Sensor -- FPR-100 The FPR100 Series sensors are designed with a one-piece composite rotor, sturdy unibody construction, ceramic shafts, and superior sealing, to provide superior durability and economy. The FPR110 Series, with bright...
Economical Air Flow Switch -- FST1000 The FST1000 Series measures air velocity and provides two SPST alarm contact closures corresponding to high and low alarm set points. The alarm set points are adjustable from 0 to...
Industrial Flow Switch -- FSW-30A / FSW-31A / FSW-32A The FSW-30A flow switch is supplied with six orifices to provide 6 overlapping flow ranges from 0.12 to 8.0 GPM for water. The FSW-31 is supplied with 3 different drag...
Industrial Flow Switch -- FSW-40A / FSW-50 Saint The FSW-40A and FSW-50 Series flow switches feature 15 A SPDT switches and an adjustable internal screw adjustment which provides continuous switch point while in operation in-line. Multiple drag disks...
Thermal Dispersion Flow Switch -- FSW-6000 / FSW-7000 The FSW-6000/7000 Series are thermal flow switch monitors designed to monitor flow status and also used to detect level of liquids, air and gas. A chain of 8 LED’s gives...
Liquid Flow Transmitter and Switch -- FSW-9000 The FSW-9000 Series is a flow switch monitor that measures the velocity of the flow. It is ideal for use in measurement and control liquid applications. The FSW-9000 Series provides...
Flow Switch -- FSW300 The FSW301 flow switch comprises a paddle system (1) with a permanent magnet attached (2). Above that magnet is a reed contact (3), located outside the flow of fluid. A...
Flow Switch -- FSW301 The FSW301 flow switch comprises a paddle system with a permanent magnet attached. Above that magnet is a reed contact, located outside the flow of fluid. A second magnet with...
Low Cost Flow Monitoring Unit -- FSW500 The FSW500 offers low cost flow monitoring with a variety of switch actuation points and low pressure drop. All wetted parts are polypropylene or stainless steel, making this switch ideal...
Liquid Micro-Flow Switch -- FSW530 The FSW530 Series flow switches are capable of detecting extremely low liquid flow rates from 13 mL/ minute up to 10 L/minute with a full scale switch accuracy of ±1.0%...
Compact Relay Controller Flow Switch -- FST-200-R / FST-300-R This switch package offers a complete solution for flow or no-flow switching in pipes or ducting ranging up to 16". The compact relay controller provides reliable actuation of valves, pumps...