Electromagnetic Flow Sensors

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The GF Signet 2551 Magmeter is an insertion style magnetic flow sensor without any moving parts. All versions of the 2551 are constructed of corrosion-resistant materials to provide long-term reliability with minimal maintenance costs. Utilizing the comprehensive line of GF Signet installation fittings, sensor alignment and insertion depth of the 2551 is automatic.
These versatile, simple-to-install 2551 deliver repeatable flow measurement over a wide dynamic range in pipe sizes ranging from DN15 to DN200 (0.5 to 8 inches), satisfying the requirements of many diverse applications.
The 2551 offer three output options for use with GF Signet flow instrumentation using a frequency or digital (S³L) sensor output. The 4-20mA output can be used for a direct input to PLCs, chart recorders, etc. Both the 4-20mA output and digital (S³L) sensor interface are available for long distance signal transmission of up to 1,000 ft. The GF Signet 2551 with a built-in display can be used for permanent and resettable total. The display contains multi-languages with English, Spanish, German, French, Italian, and Portuguese menu options.
The 2551's empty pipe detection features a zero flow output when the sensors are not completely wetted. The frequency output is bi-directional while the 4-20mA output can be set for uni- or bi-directional flow.

Applications for the 2551 include:

  • Chemical processing
  • Water and wastewater monitoring
  • Metal recovery and landfill leachate
  • Commercial pools, spas, and aquariums
  • HVAC
  • Scrubber control
  • Neutralization systems
  • Industrial water distribution
Price: Starting at $1,041.30
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GF Signet installation fittings are designed to secure insertion style flow sensors into position and control the position of paddlewheels and electrodes in relation to the dimensions of the pipe. Use the proper fitting for your system to obtain the best results.

Metalex fittings are only for use with Metalex flow sensors.

Consult the fittings' datasheet to insure you select a fitting appropriate to the installation.

Price: Starting at $124.20
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Regulated output voltage in compact and lightweight plastic housings for DIN Rail mounting

  • Output capacities of 0.42A, 1A, 1.7A, 2.5A and 4A
  • Short circuit/overload/over voltage protection
  • Cooling by free air convection
  • Install on DIN rail TS-35/7.5 or 15
  • NEC class 2 / LPS compliant
  • Built in DC OK active signal
  • LED indicator for power on
  • No load power consumption
  • 100% full load burn-in test
Price: Starting at $109.80
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Manufactured by Georg Fischer / GF Signet

  • Connects with level, temperature, pressure and multiparameter instruments
  • Compatible with Signet instruments and other manufacturers' transmitters
  • Up to two 4 to 20mA sensor inputs
  • Connects additional measurement parameters to Signet 8900 Multi-Parameter instrument
  • Wire or DIN rail mountable
Price: Starting at $252.00
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The GF Signet H COMM Module enables communication between the 9900 transmitter and a HART®-enabled device. The HART (Highway Addressable Remote Transducer) Protocol superimposes digital signals on top of the 4 to 20 mA analog signal.
Allows communication between the 9900 Transmitter and a HART® enabled device
Allows access to primary and secondary measurements remotely
Allows user to remotely adjust the 4 and 20 mA settings

Price: Starting at $297.00

The GF Signet 9900 Relay Module adds two programmable dry-contact relays. The open collector output in the 9900 base unit uses the Relay 1 setting. The Relay Module is assigned to relays 2 and 3 in the menus.


  • Adds two programmable dry-contact relays
  • Available in panel mount only
  • Hysteresis and time delay available for each relay
  • User programmable
Price: Starting at $112.50
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