GF Signet Flow Sensors


Operating range 0.3 to 6 m/s (1 to 20 ft/s), Wide turndown ratio of 20:1, Installs into pipe sizes DN15 to DN900 (.5 to 36 in), Highly repeatable output

Product Overview :

The Model 515 GF Signet Flow Sensorssensors are offered in a variety of materials for a wide range of pipe sizes and insertion configurations. The many material choices, including PP and PVDF, make this model highly versatile and chemically-compatible to many liquid process solutions. Signet Flow Sensors can be installed in up to DN900 (36 in.) pipes using Signet's comprehensive line of custom fittings. These custom fittings, which include tees, saddles, and weldolets, set the sensor to the proper insertion depth into the process flow. The Signet Flow Sensors are also offered in configurations for wet-tap requirements.

Fields of Application:

  • Pure Water Production
  • Filtration Systems
  • Chemical Production
  • Liquid Delivery Systems
  • Pump Protection
  • Scrubber Systems
  • Water Monitoring
  • Not suitable for gases


  • Operating range 0.3 to 6 m/s (1 to 20 ft/s)
  • Wide turndown ratio of 20:1
  • Highly repeatable output
  • Simple, economical design
  • Installs into pipe sizes DN15 to DN900 (1/2 to 36 in.)
  • Self-powered/no external power required
  • Test certificate included for -X0, -X1
  • Chemically-resistant materials


  • RoHS compliant
  • China RoHS
  • Lloyd's Register
  • NSF (P51530-PX version only)
Technical Specification :
Operating Range 0.3 to 6 m/s (1 to 20 ft/s)
Pipe Size Range DN15 to DN900 (½ to 36 in)
Linearity ±1% of max. range @ 25 °C (77 °F)
Repeatability ±0.5% of max. range @ 25 °C (77 °F)
Min. Reynolds Number Required 4500
Sensor Body Glass-filled PP (black) or PVDF (natural)
O-rings FPM (std), optional EPR (EPDM) or FFPM
Rotor Pin Titanium, Hastelloy-C or PVDF; optional Ceramic, Tantalum, or Stainless Steel
Rotor Black PVDF or Natural PVDF; optional ETFE, with or without carbon fi ber reinforced PTFE sleeve
Frequency 19.7 Hz per m/s nominal (6 Hz per ft/s sinusoidal)
Amplitude 3.3 V p/p per m/s nominal (1 V p/p per ft/s)
Source Impedance 8 KΩ
Cable Type 2-conductor twisted pair with shield, 22 AWG
Cable Length 7.6 m (25 ft) can be extended up to 60 m (200 ft) maximum
Operating Temperature -18 °C to 66 °C / 0 °F to 150 °F
Max. Wet-Tap Sensor Removal Rating 1.7 bar @ 22 °C / 25 psi @ 72 °F
Standards and Approvals RoHS compliant, China RoHS
You can find different styles of like 515 Rotor-X