Signet 2100 Turbine Flow Sensor

Engineered specifically for small pipe diameter applications, the Signet 2100 Turbine Flow Sensor provides accurate readings in two flow ranges: 0.3 to 3.8 lpm and 3 to 38 lpm (0.1 to 1 gpm and 0.8 to 10 gpm).

The injection-molded PVDF body and ceramic bearings provide excellent chemical compatibility and long service in dosing and batching applications. Union piping and tubing connections along with removable NEMA 4X electronics allow for easy assembly and field replaceability. The 2100 can be used with DN8 (¼ in.), DN10 (3 /8 in.), DN15 (½ in.) tubing, or DN15 (½ in.) piping for simple installation. End connections are available in PVDF for hose barbs, fusion socket or IR/butt fusion, and in PVC for socket or NPT thread.



  • Operating range of 0.38 to 38 lpm (0.10 to 10 U.S. gpm)
  • Non-magnetic turbine
  • Union ends for various connector types
  • End connector kits for rigid or flexible tubing or DN15 (½ in.) pipe
  • PVDF & ceramic wetted parts provide superior chemical compatibility
  • For use with both clear and opaque fluids
  • Small and compact design
  • 4.6 m (15 ft) cable
  • Features removable electronics that installs from either side of the sensor


  • Chemical Addition
  • Textile Dyeing
  • High-purity Chemical Dispensing
  • Water Addition
  • Fertigation
  • Dosing
  • Pump Protection
  • Not suitable for gases


Flow Range-L = 0.38 to 3.8 lpm0.10 to 1 U.S. gpm
-H = 3 to 38 lpm0.8 to 10 U.S. gpm
Accuracy±3% of reading
Repeatability±0.5% of reading
Pipe Size RangeDN15 (½ in.)
Tubing SizeDN8 (¼ in.), DN10 (3/8 in.), DN15 (½  in.)
Wetted Materials
Sensor Body/RotorPVDF
O-rings-1 = FKM, -2 = EPR (EPDM)
Electronics HousingPBT (polybutylene terephthalate)
EVA (ethylene vinyl acetate)
Power5 to 24 VDC ±10%, regulated, 1.5 mA max.
Reverse polarity protected
OutputOpen collector, sinking, max 30 mA
Cable Length4.6 m (15 ft) can be extended up to 305 m (1000 ft)
Cable TypePVC jacketed, 2 conductor twisted pair with shield (22 AWG)
Max. Temperature/Pressure Rating
 16 bar @ 20 °C232 psi @ 68 °F
9.3 bar @ 70 °C130 psi @ 158 °F
Operating Temperature-20 °C to 70 °C-4 °F to 158 °F
Storage Temperature-15 °C to 80 °C5 °F to 176 °F
Shipping Weight
 0.15 kg0.33 lb
Standards and Approvals
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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