Signet 3-2540-XX Stainless Steel High Performance Flow Sensor

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.

Fields of Application:
  • HVAC
  • Turf Irrigation
  • Cooling Systems
  • Filtration Systems
  • Water Distribution
  • Leak Detection
  • Pump Protection
  • Ground Water Remediation
  • Gravity Feed Line
  • CE
  • FCC
  • ROHS Compliant
  • China RoHS
  • 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
Operating Range0.1 to 6 m/s - 0.3 to 20 ft/s
Pipe Size Range Standard VersionDN40 to DN600 - 1 to 24 in.
Pipe Size Range Hot-Tap VersionDN40 to DN900 - 1 to 36 in.
Sensor Fitting Options1 in. NPT threads - ISO 7/1-R 1.5 threads
Linearity1% of full range
Repeatability0.5% of full range
Body316 stainless steel (1.4401)
Fitting316 stainless steel (1.4401)
Fitting O-ringsFPM, optional EPR (EPDM)
Rotor17-4 SS Alloy
Rotor PinTungsten Carbide GRP 1 (standard) stainless steel (optional)
Retainers (2)316 stainless steel (1.4401)
Rotor Bearings (2)Carbon fiber reinforced PTFE
Frequency15 Hz per ft/s nominal
Power5 to 24 VDC 10%, regulated, 1.5 mA max.
Output TypeOpen collector, sinking, max 10.0 mA
Cable Length7.6 m (25 ft), can be extended up to 300 m (1,000 ft)
Cable Type2-conductor twisted-pair with shield, 22 AWG
Sensor with standard FPM sensor fitting O-rings17 bar @ 82 C - 250 psi @ 180 F
Sensor with optional EPR (EPDM) sensor fitting O-rings17 bar @ 100 C - 250 psi @ 212 F
Operating Temperature-18 C to 100 C 0 F to 212 F
Shipping Weight 3-2540-1/-2/-1S/-2S1.79 kg, 3.9 lb
Shipping Weight 3-2540-3/-4/-3S/-4S2.15 kg , 4.7 lb
Standards and ApprovalsCE, FCC, RoHS compliant, China RoHS, Manufactured under ISO 9001 for Quality and ISO 14001 for Environmental Management and OHSAS 18001 for Occupational Health and Safety
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