Customers around the world depend on Georg Fischer / GF Signet for quality flow and analytical products which are simple to operate and generate reliable results for all process requirements. Committed to product excellence, Georg Fischer / GF Signet continues its pursuit of quality through innovative, leading-edge technology in flow control and measurement. read more

Sophisticated testing equipment ensures that every sensor, transmitter, controller, and monitor manufactured meets Georg Fischer / GF Signet's highest standards. Engineered to provide reliable, accurate information, Georg Fischer / GF Signet instruments are used in applications ranging from water and wastewater treatment to chemical processing.

Select a Filter Below

BTU Meters ()
Conductivity Sensors ()
Dissolved Oxygen Meters ()
Flow Meters ()
Electromagnetic Flow Meters ()
Magmeters ()
Rotameters ()
Variable Area Flow Meters ()
Paddlewheel Flow Meters ()
Turbine Flow Meters ()
Ultrasonic Flow Meters ()
Flow Meter Monitors ()
Flow Transmitters ()
ISE Meters ()
Level Instruments ()
Level Indicators ()
Level Switches ()
Level Transmitters ()
ORP Meters ()
pH Meters ()
Pressure Sensors ()
Pressure Transducers ()
Pressure Transmitters ()
Process Controllers ()
Temperature Transmitters ()
Valve Motor Drive Controllers ()
Valves ()
Sort by:
GF Signet 2551 Magmeter
Corrosion resistant insertion magmeter with optional display, accurate measurement even in dirty liquids
In Stock
GF Signet 9900 Transmitter
SmartPro single channel interface & multi-parameter input selection
In Stock
GF Signet 2537 Paddlewheel Flow Meter
Low flow capable flow meter, as low as 0.3ft/s with choice of output, can install into 0.5 to 8 inch pipes
In Stock
GF Signet 515 Rotor-X Paddle Wheel Flow Sensor
Rotor-X paddle wheel flow sensors with sinusoidal frequency output
In Stock
GF Signet 8900 Multi-Parameter Controller
Measures flow, pH, ORP, conductivity, pressure, level, and temperature
In Stock
Georg Fischer 807 Series Rotameter
Fully customizable rotameter with multiple scale ranges
GF Signet 2724-2726 pH and ORP Electrodes
DryLoc connector with corrosion-resistant gold-plated contacts, connects to the 2760 preamplifier or the 2750/1 sensor electronics
In Stock
GF Signet 2536 Rotor-X Paddle Wheel Flow Sensor
Integral, remote, or wet-tap paddle wheel flow sensor, operating range of 0.3 to 20ft/s (0.1 to 6m/s)
In Stock
GF Signet 8150 Flow Totalizer
Battery powered flow totalizer
GF Signet 2850 Conductivity/Resistivity Sensor
Available in various configurations for maximum installation flexibility
In Stock
GF Signet U1000 UltraFlow Ultrasonic Flow Sensor
Clamp-on flow meter as a stand alone meter or as as integral part of control loop
GF Signet 9950 Transmitter
Two channel transmitter/controller can support two sensors of same or different types in one instrument
In Stock
Georg Fischer Type 546 Ball Valve
Manual true union ball valves
In Stock
GF Signet 2819-2823 Conductivity/Resistivity Electrodes
Conductivity/resistivity sensors provide highly accurate sensing across a very broad dynamic range
In Stock
GF Signet Portaflow 220 / 330 Ultrasonic Flow Meter
Portable ultrasonic flow meter, transit time measurement technique, flow velocity range 0.1 m/s to 20 m/s
GF Signet 2100 Turbine Flow Sensor
Turbine flow sensor for small diameter applications
In Stock
GF Signet 2552 Magmeter
Metal magmeter / electromagnetic flow sensor for pipes 2 to 102"
GF Signet 2450 Pressure Sensor
Pressure sensor for corrosive fluids
Georg Fischer 5-Series DIASTAR Ten Valves
High flow pneumatically actuated diaphragm valve, 1/2" to 2" valve sizes, threaded connection without bolts
GF Signet FlowtraMag Magmeter
Full-bore plastic PVC in line style flow meter, for high accuracy flow measurement in short pipe runs
In Stock
Georg Fischer Type 567 Butterfly Valve
Wafer Style Butterfly Valve, sizes 2 to 12 inch, glass filled polypropylene, compatible with ANSI and DIN flanges
GF Signet 2540 Paddle Wheel Flow Sensor
Stainless steel high performance paddle wheel flow sensor
In Stock
Georg Fischer Type 561 / 562 Check Valves
Self-closing check valve, corrosion-resistant and high pressure rating, 3/8 to 4 inch valve sizes, with or without spring
Georg Fischer Type 127 Ball Valve
Electrically actuated ball valves for on/off control, sizes from 3/8 to 2in,
Georg Fischer Type 182 Ball Valve
Electrically actuated ball valves capable of either on/off or precision flow control
$1,095.00 to $2,140.00
$985.50 to $1,926.00
GF Signet 2260 Ultrasonic Level Transmitters
2-wire compact transmitters, non-contact level metering, level, volume and open channel flow
GF Signet 2839-1V to 2842-1V Conductivity Electrodes
Compact 316 SS electrodes with injection molded PVDF process connections and insulators, made for small pipes
In Stock
GF Signet 2610 Dissolved Oxygen Sensor
Optical DO measurement no flow requirements, calibration built into the measurement cap 2% of range 0 to 20 mg/l
GF Signet 9900-1BC Batch Controller
Store up to 10 batch sizes for batching or blending a variety of liquid volumes, ±0.2% accuracy
In Stock
Georg Fischer Type 523 Ball Valve
Metering Ball Valve, 3/8 or 1/2 inch valve sizes, special V-notch ball and operates with a 180° turn
GF Signet 2774-2777 pH and ORP Electrodes
pH and ORP electrodes with DryLoc connector with gold-plated contacts featuring a PTFE double reference junction
In Stock
GF Signet 525 Metalex Paddle Wheel Flow Sensor
Combines stainless steel construction with insertion paddlewheel technology
Georg Fischer Type 104 Ball Valve
Electrically Actuated Ball Valve for on/off control, Sizes from 1/2" to 2", manual overdrive, designed for light duty applications
Georg Fischer Type 233 Ball Valve
Pneumatically Actuated Ball Valve, sizes 3/8 to 4 inch, Socket or flanged connection ends, PTFE seat
GF Signet 4630 Chlorine Analyzer System
Integrated all-in-one system designed to measure free chlorine
GF Signet 2350 Temperature Sensor
Temperature sensor for use in high purity applications
GF Signet 2270 Ultrasonic Level Sensor
2 wire compact sensor, for single and multiple tank applications, non-contact level measuring
Georg Fischer Type 145 Butterfly Valve
Electrically actuated butterfly valve, sizes 2 to 12 inch, emergency manual override
GF Signet 2734-2736 pH / ORP Electrodes
Patented reference electrode design that uses the unique foul-proof patented DryLoc connector
GF Signet 2507 Mini Flow Sensor
Mini flow sensor with free-running rotor driven by fluid flow
GF Signet 2000 MicroFlow Paddle Wheel Flow Sensor
Paddle wheel flow sensor for clear or dark liquids
In Stock
GF Signet 2764-2767 Differential pH and ORP Electrodes
Differential pH and ORP electrodes with DryLoc connector and Ryton body
Georg Fischer Type 375 Ball Valve
Manual ball valves with true union design
Georg Fischer Type 167 3-Way Ball Valve
Electrically actuated 3-Way ball valve, sizes from 3/8 to 2 inch, emergency manual override, horizontal orientation
Georg Fischer Type 306 Line Strainer
1/2 to 3 inch sizes, PN10 pressure rating, screens easily removed for cleaning
GF Signet 2285 Level Float Switch
Hermetically molded, double chamber, mercury free operated micro switch, Cable Lengths 5m, 10m, 20m
GF Signet 2250 Submersible Pressure Sensor
Submersible Hydrostatic Pressure Sensor For Level and Depth Control, 4-20 mA or digital output, ceramic diaphragm
Georg Fischer Type 231 / 232 Ball Valve
Pneumatically Actuated Ball Valve, sizes 3/8 to 4 inch, Socket or flanged connection ends, PP or PVDF material options
Georg Fischer 543 3-Way Horizontal Ball Valve
Horizontal orientation, sizes available from 3/8 to 2 inch, stainless steel threaded inserts for easy and secure monitoring
Georg Fischer Type 288 Ball Valve
Pneumatically Actuated 3-Way Ball Valves, 3/8 to 2 inch valve sizes, PVC
Georg Fischer Type 240 Butterfly Valve
Pneumatically Actuated Butterfly Valve, sizes 2" to 12" glass filled polypropylene compatible
Georg Fischer Type 365 Butterfly Valve
Manually operated PTFE lined lug style butterfly valve with PFA encapsulated disc, pressures up to 150 psi
GF Signet 8630 Chlorine Transmitter
Simultaneously displays free chlorine and pH levels
Georg Fischer Type 180 Ball Valve
Electrically actuated ball valve, 16 to 110mm sizes, polypropylene, emergency manual override
$1,114.00 to $2,960.00
$1,002.60 to $2,664.00
GF Signet 2281 Multipoint Switch
On site probe length configuration, 2 to 4 individual switching points integrated in one sensor
Georg Fischer Type 563 Aqua Butterfly Valve
Designed specifically for water applications, sizes 2 to 12 inch, glass-filled polypropylene, compatible with ANSI and DIN flanges
Georg Fischer Type 147 Butterfly Valve
Electrically actuated lug style butterfly valve, 2 to 12 inch sizes, 316 stainless steel stem
GF Signet 2280 Tuning Fork
Maintenance free vibrating principle, independent of the liquid conductivity, dielectric constant, viscosity, pressure and temperature
Georg Fischer Type 285 Ball Valve
Pneumatically Actuated 3-Way Ball Valves, 3/8 to 2 inch valve sizes, CPVC
Georg Fischer Type 578 Butterfly Valve
Lug style butterfly valve, double eccentric operating principle, 2 to 12 inch sizes available
GF Signet 2630 Free Chlorine Sensor
Designed to measure free chlorine in drinking water and wastewater treatment applications
Georg Fischer 543 3-Way Vertical Ball Valve
Vertical orientation, sizes available from 3/8 to 2 inch, stainless steel threaded inserts for easy and secure monitoring
Georg Fischer Type 244 Butterfly Valve
Pneumatically Actuated Lug Style Butterfly Valve, 2 to 12 inch valve sizes
Georg Fischer Type 369 Check Valve
Wafer Check Valve, 1.5 to 12 inch sizes, suitable for vertical and horizontal mounting
GF Signet 2284 Ultrasonic Gap Switch
Relay output, corrosion resistant PPS body, 1" and 3/4" threaded mounting, compact sensor contained full plastic body
GF Signet 4632 Chlorine Dioxide Analyzer System
Reagent free measuring, complete panel system, built in flow regulator maintains constant flow and pressure
GF Signet 2282 Guided Float Switch
Optimized chemical compatibility, for small tanks, PP and PVDF version available
Georg Fischer Type 170 Ball Valve
Electrically actuated 3-Way ball valve, sizes from 3/8 to 2 inch, emergency manual override
Georg Fischer Type 181 Ball Valve
Electrically actuated ball valve, 16 to 110mm sizes, PVDF, emergency manual override
Georg Fischer 2290 Non-Contact Radar Level Transmitter
19° beam angle, K-band radar featuring ±3 mm (±0.1inch) accuracy and short dead band, tank mapping function
Georg Fischer 2291 Guided Radar Level Transmitter
Measuring range up to 19.6ft (6m), TDR measuring principal, 0.2in (±5mm) accuracy, graphic LCD display
GF Signet Installation Fittings
Fittings for securing insertion style flow sensors with different styles, models & materials to suit a variety of applications
In Stock
GF Signet 2751 pH/ORP Smart Sensor Electronics
Submersible or in-line integral mount installation with DryLoc connectors and automatic electrode health monitoring function
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 3-0252 Configuration Tool
Interfaces with Signet SmartPro transmitters and blind sensors, allowing fast and easy configuration using a PC
In Stock
GF Signet 2760 pH/ORP Preamplifier
Submersible or in-line mount connector or preamplifier featuring DryLoc connectors, available with NPT or ISO threads
In Stock
GF Signet 8051 Flow Integral Mount NPT
GF Signet 8051 Flow Integral Mount NPT
In Stock
Georg Fischer EA15 Electric Actuator
Electric Actuator for use with the GF 127 Ball Valve, IP65 according to EN 60529
GF Signet i-Go 8058 Signal Converter
Converts 4-20mA signal into the Signet digital format (S3L) for use with GF Signet instruments
GF Signet 2756-WT and 2757-WT pH / ORP Electrodes
Wet-tap pH and ORP electrodes featuring DryLoc connector with gold-plated contacts
$439.00 to $510.00
$395.10 to $459.00
GF Signet 8052 3/4" Integral Mount NPT
In Stock
Georg Fischer EA25-250 Actuator Positioner Board
Inputs with galvanic isolation for continuous control operation (4-20mA / 0-10V)
GF Signet 3719 pH/ORP Wet-Tap Assembly
pH/ORP wet-tap assembly allows electrode installation without process shutdown
GF Signet 9900 Rear Enclosure Kits
Rear enclosure kits allow the GF Signet 9900 Transmitter to be mounted just about anywhere
In Stock
GF Signet 9900 Relay Module
Relay module, 2DCR for GF Signet 9900 transmitter
In Stock
GF Signet 3-9900.397 Batch Module
adds batch capability to the 9900 Transmitter (Generation II)
GF Signet Optical Dissolved Oxygen Sensor Cap
Replacement Optical Dissolved Oxygen Sensor Cap (0 to 20 ppm)
GF Signet 9900 Direct Conductivity/Resistivity Module
Interfaces conductivity electrodes directly to the GF Signet 9900
In Stock
GF Signet 9950.393 Relay Modules
Provides additional mechanical relays and/or solid state relays and binary outputs for expanding GF Signet 9950 transmitter
In Stock
Georg Fischer EA25-250 Actuator Profibus DP Board
For integrating EA25, EA45, EA120 & EA250 electric actuators into a Profibus DP network
Georg Fischer EA25-250 Actuator Fail-Safe Return
In case of a power outage, the fail-safe return unit can be used to move to a preset safe position
GF Signet pH Buffer Solutions
Liquid pH buffer solutions conveniently packaged in one pint bottles
In Stock
GF Signet pH Calibration Kit
Includes buffer solutions, mixing cups and a cup stand
GF Signet 2850-101 Plug-In NIST Traceable Recertification Tool
For use with the GF Signet 2850 for calibration or validation of conductivity/resistivity electronics
GF Signet 7310 Switching Power Supplies
Regulated output voltage in compact and lightweight plastic housings for DIN Rail mounting
GF Signet pH Buffer Kit
Includes 4, 7, 10 pH buffers in powder form
GF Signet Accessory Kit
Wall Mount Accessory for 9900
GF Signet 9950 Modbus Module
Connects the 9950 to existing Modbus RTU, serial RS485, and automation networks including PLCs and SCADA systems
GF Signet 2759 pH/ORP System Tester
Battery-powered millivolt generator simulates pH values for trouble-shooting and system verification
GF Signet 4 to 20mA Output Module
Adds a second 4 to 20 mA Output to the 9900 Transmitter, loop settings are independent thus allowing different sources to be assigned to each loop
GF Signet 9900 Modbus Module
Connects any 9900 transmitter to a Modbus Communication network to transfer live readings & measurements to PLC & SCADA systems
GF Signet 2100 Connector Kits
Connector Kits for GF Signet Model 2100 Turbine Flow Sensor
In Stock
Georg Fischer Limit Switches
Limit switches compatible with the George Fischer 807 Series rotameter
GF Signet Dual 4-20mA Current Loop Output Module
Increases the amount of passive current loop outputs available in the 9950 Transmitter from 2 to a maximum of 6 loop outputs
GF Signet HART Modem
HART Modem for 2270 Ultrasonic Level Sensor, DIN rail and ATEX versions available
GF Signet Turbidity Calibration Kit
Calibration kit for GF Signet 4150 Turbidimeter
GF Signet Single Channel Direct Conductivity Module
Module for the 9950 transmitter measures conductivity, resistivity & salinity, compatible with all Signet conductivity electrodes
GF Signet FCL Electrolyte Kit
Replacement electrolytes for servicing GF Signet free chrlorine sensors
GF Signet Dual Channel Direct Conductivity Module
Allows you to have two independent conductivity measurements in a single slot on the 9950 transmitter
GF Signet 200 Retrofit Adapter
1/4-DIN retrofit adapter
GF Signet 9900 H COMM Module
Enables communication between the GF Signet 9900 and a HART®-enabled device
Georg Fischer 159001695 / 159001696 Mount
Panel mount and field mounts available
GF Signet 2285-P-weight Counterweight
Counterweight for 2285 float
GF Signet Replacement Desiccant
Replacement Desiccant for the GF Signet 4150 Turbidimeter
GF Signet Heavy Duty Wall Mount Bracket
Heavy duty 1/4 DIN wall mount bracket (panel mount only)
GF Signet 4 Conductor Cable
4-conductor cable with water tight connector, 13ft and 19.5ft lengths available
GF Signet 3519
Wet-Tap Valve used with GF Signet 515 or 2536 Rotor-X flow sensor
GF Signet Standard Connector Kit
Standard Connector Kit, Right Angle, 9900 Transmitter
GF Signet 3-2632.398 CLO2 Sensor Service Kit
Georg Fischer EA25-250 Actuator Monitor Board
For monitoring control time and motor current, as well as for extending the control times and counting the control cycles
GF Signet 3-2632-1 CLO2 Sensor
CLO2 sensor, 0 to 2 ppm range
GF Signet Plug
Plugs for the 9900 transmitter
In Stock
GF Signet Replacement Cuvettes
Replacement cuvettes for GF Signet 4150 Turbidimeter
Georg Fischer 159000967 Signal Converter
Converter to connect 2290 to 9900 Transmitter, 8900 Multi-Parameter Controller
GF Signet Stilling/Bubble Chamber
Helps removes bubbles from solutions with high O2 levels
Georg Fischer 159001841 / 159001842 9950 Base Unit
Two Channel Multi-Parameter Inputs, Two 4 to 20 mA Outputs, Panel Mount, DCor DC/AC power options
GF Signet Wet-Tap Installation Tool
Required accessory for GF Signet 2540 and 2517 wet-tap flow installations
GF Signet KLP-201 Probe Separator
Probe separator for conductive level switch
GF Signet 3-9950.392 Relay Module Connector Kit
Relay module connector kit for the GF Signet 9950 transmitter
GF Signet Adapter Kit
Angle adjustment adapter kit for field mounting the 9900 transmitter
GF Signet Display Unit
Display unit for type 2260 Transmitter
GF Signet 8059 External Relay Modules
Supplement the output capabilities of host instruments with digital S3L output
GF Signet 2650 Amperometric Electronics
Provides the polarization voltage and signal conditioning required by GF Signet Amperometric Sensors
GF Signet Surface Mounting Bracket
GF Signet RC Filter Kit
RC Filter Kit
GF Signet Optional Connector Kit
Connector kit, In-Line (optional)
GF Signet KLN Electrodes
Stainless steel electrode 0.5m (19.69"), 1.0m (39.37"), 1.5m (59.06")
GF Signet 3-2632.391 CLO2 Electrolyte
CLO2 Electrolyte, 30 ml
GF Signet 3-9950.391 Connector Kit
In-line connector kit for the GF Signet 9950 Transmitter
GF Signet Formazin Stock
Formazin stock for the GF Signet 4150 Turbidimeter
GF Signet SPDT Relays
1 or 2 SPDT Relays
GF Signet 3-4630.393 Flow Switch / Chlorine Panel