GF Signet 2540 Paddle Wheel Flow Sensor
Starting at $748.00
Starting at $673.20

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  • Flow rate 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 DN 900 (36 in.)
  • Adjustable sensor - one size for entire pipe range

The GF Signet 2540 Paddle Wheel Flow Sensor offers the strength and corrosion resistance of stainless steel for liquid applications with low velocity measurements. The GF Signet 2540 paddle wheel flow sensor's 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.

The GF Signet 2540 paddle wheel flow sensor has Fluoroloy B/PTFE bearings and Tungsten Carbide pin to provide exceptional wear resistance. The GF Signet 2540 paddle wheel 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. GF Signet 2540 paddle wheel flow sensors can be installed in DN40 to DN600 (1.5 to 24 inch) pipes using the 1.5 inch or ISO 7/1-R.15 threaded process connection.

The GF Signet 2540 paddle wheel flow sensor is also offered in a hot-tap configuration with a bleed valve service without process shutdown in pipes up to DN900 (36in). Both styles of the GF Signet 2540 paddle wheel flow sensor must be used in full pipes and can be used in low pressure systems.

Applications for the GF Signet 2540 Paddle Wheel Flow Sensor

  • HVAC
  • Turf irrigation
  • Cooling systems
  • Filtration systems
  • Water distribution

Required Components

These additional components are required for the operation of your product. We strongly advise you to purchase these components unless you already own them or own a suitable alternative.

GF Signet Wet-Tap Installation Tool
Required accessory for GF Signet 2540 and 2517 wet-tap flow installations


Please consider these optional accessories.

GF Signet 8900 Multi-Parameter Controller
Measures flow, pH, ORP, conductivity, pressure, level, and temperature
In Stock
GF Signet 8050 Universal Mounting Kit
Kit for mounting a field mount transmitter on a pipe, wall or other stationary surface near a sensor
In Stock
GF Signet 9900 Transmitter
SmartPro single channel interface & multi-parameter input selection
In Stock


This product can be used in the following applications:

Part Number Price Available
Show Configuration
Base Price
Mounting Options
1.5 inch NPT thread
Rotor Pin Material
Tungsten carbide
$673.20 2

Interested in Other Part Numbers?

Other part numbers are available to order but are not currently in stock. Current availability for non-stock parts is "Usually ships in 2-3 weeks". Click here to select options