DwyerOmega FST-200 Thermal Dispersion Flow Switches offer high-reliability liquid flow monitoring with no moving parts, detecting flows as low as 0.04 FPS in pipe sizes from 1/8″ to 12″.
The DwyerOmega FST-200 Thermal Dispersion Flow Switches provide a reliable and cost-effective solution for monitoring liquid flow. Using thermal dispersion technology, they detect flow by measuring the temperature difference between a heated and a non-heated sensor probe. As liquid passes, it cools the heated probe, reducing the temperature gap. This method works well with fluids ranging from 0.4 to 1.2 specific gravity and 1 to 300 cp viscosity. These switches detect very low flow rates—down to 0.04 FPS—and handle pulsating flow from 10 to 100 pulses per minute. With no moving parts, the FST-200 offers high reliability and long service life. It suits pipe and tubing sizes from 1/8″ to 12″, making it ideal for pump and valve monitoring in critical applications.
| Function | Thermal dispersion flow switch |
|---|---|
| Sensing Method | Heated vs non-heated sensor probe temperature differential |
| Media Compatibility | 0.4 to 1.2 specific gravity, 1 to 300 cp viscosity liquids |
| Minimum Detectable Flow | 0.04 FPS |
| Pulsating Flow Range | 10 to 100 pulses per minute |
| Moving Parts | None – high reliability, long service life |
| Pipe/Tubing Size | 1/8″ to 12″ |
The DwyerOmega FST-200 Thermal Dispersion Flow Switch is used for:
Hinco Instruments is your authorised DwyerOmega distributor in Perth, WA. Contact us for pricing, availability, and technical support.
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