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FSP-21 standard piston flow switch
Applied toCirculation system flow detection, expensive equipment protectionOther occasions
FSP-21 standard piston flow switch is usedThe medium pushes the plunger spring to the set position, where a magnetic field actuates the reed switch to output an on/off signal.With minimal pressure loss, good repeatability, high stability, complete isolation of mechanical and electronic parts, well-sealed, can be used forLiquids, gasesall measurable, and other features.high pressure resistant,corrosion-resistant,Suitable for variousPipe no-flow protection, leak alarm, dry-run pump alarm or control.
FSP-21 standard piston flow switchYesTake advantage ofThe medium pushes the plunger spring to the set position, where a magnetic field actuates the reed switch to output an on/off signal. It adopts online installation, mechanical flow switch, used for liquid or gas media, sturdy plastic, aluminum alloy or stainless steel casing, resistant to high pressure and corrosion. It is a product that can reduce pipeline flow leakage, prevent blockage, and prevent pump idling.
■ Small pressure loss, strong anti-fouling ability, good repeatability
■ The mechanical part and the electronic part are completely isolated, and the sealing performance is good
■ switches at very low flow rates with wide adaptability
■ Simple compact structure, high pressure resistance
■ A variety of materials and pressure levels are available
■ Liquid contact material: stainless steel, POM plastic
| Compatible Media | WaterAnd waterSolutions, oils and oil mixtures |
| Measuring Range | 0.4-7L/min |
| 1-12.5L/min | |
| 2-24L/min | |
| 27-70L/min | |
| Nominal Diameter | DN8-25mm |
| Repeatability Error | ±2%FS |
| Hysteresis | Depending on the switching point, 0.5L/min |
| Operating Temperature | -20 to 85°C (standard; high temperature customizable) |
| Working Pressure | Aluminum alloy: 5MPa max, stainless steel: 10MPa max |
| Material | Body: aluminum alloy, stainless steel |
| Piston: POM plastic | |
| seal: NBR | |
| Pressure loss | 0.03MPa (at 25L/min) |
| Signal Output | Reed switch |
| Power Supply | 24V DC, 220VAC |
| Electrical Connection | M12 connector, directly attached with 2 meters cable |
| Connection Type | Internal and external thread installation |
| Ambient Temperature | -20 to +80°C |
| Protection Rating | IP65, IP67 |
| Weight | approx. 0.5kg |
Application Areas:
■ FSP-21Standard piston flow switches are mainly used to monitor the fluid flow rate in pipelines, monitor flow interruptions, or prevent idling of pumps. It is widely used in various industries where it is necessary to monitor the flow rate of fluids in pipelines or protect important equipment when liquid flow fails, such as protecting water pumps, monitoring lubricating oil circuits, refrigeration and heating circuits, monitoring pipeline ruptures, monitoring leaks, etc.
DOWESTON · 13 years of measurement excellence · global process instrumentation brand
DowestonPrecision measurement & control instrument manufacturer
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Address617 Cepi Drive, Chesterfield, MO 63005, USA
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