2540 Stainless Steel High Performance Flow Sensor


The Signet 2540 Paddlewheel Flow Sensor offers the strength and corrosion-resistance of stainless steel for liquid applications with low velocity measurements. Unique internal circuitry eliminates the need for magnets in the process fluid, enabling flow measurement of 0.1 to 6 m/s (0.3 to 20 ft/s) while maintaining the advantages of insertion sensor design. Ultraflon™ 500C bearings and a Tungsten Carbide pin provide exceptional wear resistance.

The Signet 2540 Paddlewheel Flow Sensor offers field-replaceable electronics and transient voltage suppression (TVS) to provide greater immunity to large voltage disturbances (i.e. lightning) sometimes encountered in field wiring. Sensors can be installed in DN40 to DN600 (1½ to 24 in.) pipes using the 1½ inch NPT or ISO 7/1-R 1.5 threaded process connection. The sensors are also offered in a hot-tap configuration with a bleed valve service without process shutdown in pipes up to DN900 (36 in.). Both styles of sensors must be used in full pipes and can be used in low pressure systems.

Product Overview

Fields of Application:

  • HVAC
  • Turf Irrigation
  • Cooling Systems
  • Filtration Systems
  • Water Distribution
  • Leak Detection
  • Pump Protection
  • Ground Water Remediation
  • Gravity Feed Line



  • Operating range: 0.1 to 6 m/s (0.3 to 20 ft/s)
  • Field replaceable electronics
  • Non-magnetic RF detection
  • Standard NPT or ISO process connections   
  • Hot-tap versions for installation/service without system shutdown
  • For pipe sizes up to DN900 (36 in.)  
  • 7.6 m (25 ft) cable   
  • Adjustable sensor - one size for entire pipe range


  • CE
  • FCC
  • RoHS Compliant
  • China RoHS


Compatible Products