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.

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Conductivity / Resistivity / Salinity / TDS Meters ()
DO / COD Meters ()
Energy Meters / Btu Meters ()
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ISE Meters ()
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GF Signet 2551 Magmeter
Corrosion resistant insertion magmeter with optional display, accurate measurement even in dirty liquids
$1,085.00
$976.50
In Stock
GF Signet 9900 Transmitter
SmartPro single channel interface, multi-parameter input selection
$597.00
$537.30
In Stock
GF Signet 2536 Rotor-X Paddle Wheel Flow Sensor
Low flow Rotor-X paddle wheel flow sensor
$334.00
$300.60
In Stock
GF Signet 2537 Paddlewheel Flow Meter
Low flow capable flow meter, as low as 0.3ft/s, with choice of output and can install into 0.5 to 8 inch pipes
$630.00
$567.00
In Stock
GF Signet 515 Rotor-X Paddle Wheel Flow Sensor
Rotor-X paddle wheel flow sensors with sinusoidal frequency output
$330.00
$297.00
In Stock
GF Signet 8900 Multi-Parameter Controller
Measures flow, pH, ORP, conductivity, pressure, level, and temperature
$866.00
In Stock
Georg Fischer 807 Series Rotameter
Fully customizable rotameter with multiple scale ranges
$148.00
$133.20
GF Signet U1000 UltraFlow Ultrasonic Flow Sensor
Clamp-on flow meter as a stand alone meter or as as integral part of control loop
$1,961.00
$1,764.90
GF Signet 2724-2726 pH and ORP Electrodes
DryLoc connector with corrosion-resistant gold-plated contacts, connects to the 2760 preamplifier or the 2750 sensor electronics
$289.00
$260.10
In Stock
GF Signet 2850 Conductivity/Resistivity Sensor
Available in various configurations for maximum installation flexibility
$396.00
$356.40
In Stock
GF Signet 8150 Flow Totalizer
Battery powered flow totalizer
$670.00
$603.00
Georg Fischer Type 546 Ball Valve
Manual true union ball valves
$63.00
$56.70
In Stock
GF Signet 2819-2823 Conductivity/Resistivity Electrodes
Conductivity/resistivity sensors provide highly accurate sensing across a very broad dynamic range
$410.00
$369.00
In Stock
GF Signet 2100 Turbine Flow Sensor
Turbine flow sensor for small diameter applications
$319.00
$287.10
GF Signet 2552 Magmeter
Metal magmeter / electromagnetic flow sensor for pipes 2 to 102"
$2,101.00
$1,890.90
GF Signet 2540 Paddle Wheel Flow Sensor
Stainless steel high performance paddle wheel flow sensor
$701.00
$630.90
In Stock
GF Signet 9950 Transmitter
Two channel transmitter/controller can support two sensors of same or different types in one instrument
$978.00
In Stock
GF Signet Portaflow 220 / 330 Ultrasonic Flowmeter
Portable ultrasonic flowmeter, transit time measurement technique, flow velocity range 0.1 m/s to 20 m/s
$4,499.00
$4,049.10
GF Signet 4150 Turbidimeter
Accurate and reliable EPA-compliant water quality monitoring for municipal and industrial applications
$2,276.00
$2,048.40
GF Signet 2450 Pressure Sensor
Pressure sensor for corrosive fluids
$552.00
$496.80
GF Signet 525 Metalex Paddle Wheel Flow Sensor
Combines stainless steel construction with insertion paddlewheel technology
$641.00
$576.90
GF Signet 4630 Chlorine Analyzer System
Integrated all-in-one system designed to measure free chlorine
$3,623.00
$3,260.70
Georg Fischer 5-Series DIASTAR Ten Valves
High flow pneumatically actuated diaphragm valve, 1/2" to 2" valve sizes, threaded connection without bolts
$221.00
$198.90
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
$2,809.00
$2,528.10
GF Signet 2350 Temperature Sensor
Temperature sensor for use in high purity applications
$329.00
$296.10
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
$399.00
$359.10
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
$353.00
$317.70
Georg Fischer Type 233 Ball Valve
Pneumatically Actuated Ball Valve, sizes 3/8 to 4 inch, Socket or flanged connection ends, PTFE seat
$364.00
$327.60
GF Signet 9900-1BC Batch Controller
Store up to 10 batch sizes for batching or blending a variety of liquid volumes, ±0.2% accuracy
$1,182.00
$1,063.80
In Stock
Georg Fischer Type 182 Ball Valve
Electrically actuated ball valves capable of either on/off or precision flow control
$992.00 to $2,362.00
$892.80 to $2,125.80
GF Signet 2260 Ultrasonic Level Transmitters
2-wire compact transmitters, non-contact level metering, level, volume and open channel flow
$1,097.00
$987.30
GF Signet 2507 Mini Flow Sensor
Mini flow sensor with free-running rotor driven by fluid flow
$955.00
$859.50
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
$426.00
$383.40
GF Signet 2764-2767 Differential pH and ORP Electrodes
Differential pH and ORP electrodes with DryLoc connector and Ryton body
$521.00
$468.90
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
$284.00
$255.60
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
$52.00
$46.80
GF Signet 2270 Ultrasonic Level Sensor
2 wire compact sensor, for single and multiple tank applications, non-contact level measuring
$841.00
$756.90
GF Signet 2000 MicroFlow Paddle Wheel Flow Sensor
Paddle wheel flow sensor for clear or dark liquids
$449.00
$404.10
GF Signet 2734-2736 pH / ORP Electrodes
Patented reference electrode design that uses the unique foul-proof patented DryLoc connector
$476.00
$428.40
GF Signet 2250 Submersible Pressure Sensor
Submersible Hydrostatic Pressure Sensor For Level and Depth Control, 4-20 mA or digital output, ceramic diaphragm
$803.00
$722.70
GF Signet 2281 Multipoint Switch
On site probe length configuration, 2 to 4 individual switching points integrated in one sensor
$249.00
$224.10
Georg Fischer Type 127 Ball Valve
Electrically actuated ball valves for on/off control, sizes from 3/8 to 2in,
$489.00
GF Signet 2630 Free Chlorine Sensor
Designed to measure free chlorine in drinking water and wastewater treatment applications
$941.00
$846.90
GF Signet 8630 Chlorine Transmitter
Simultaneously displays free chlorine and pH levels
$849.00
$764.10
Georg Fischer Type 375 Ball Valve
Manual ball valves with true union design
$47.00
$42.30
In Stock
Georg Fischer Type 306 Line Strainer
1/2 to 3 inch sizes, PN10 pressure rating, screens easily removed for cleaning
$59.00
$53.10
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
$101.00
$90.90
GF Signet 2280 Tuning Fork
Maintenance free vibrating principle, independent of the liquid conductivity, dielectric constant, viscosity, pressure and temperature
$454.00
$408.60
GF Signet 2285 Level Float Switch
Hermetically molded, double chamber, mercury free operated micro switch, Cable Lengths 5m, 10m, 20m
$60.00
$54.00
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
$706.00
$635.40
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
$729.00
$656.10
GF Signet 2284 Ultrasonic Gap Switch
Relay output, corrosion resistant PPS body, 1" and 3/4" threaded mounting, compact sensor contained full plastic body
$365.00
$328.50
Georg Fischer Type 369 Ball Valve
Wafer Check Valve, 1.5 to 12 inch sizes, suitable for vertical and horizontal mounting
$153.00
$137.70
Georg Fischer Type 578 Butterfly Valve
Lug style butterfly valve, double eccentric operating principle, 2 to 12 inch sizes available
$657.00
$591.30
Georg Fischer 543 3-Way Vertical Ball Valve
Veritcal orieantation, sizes available from 3/8 to 2 inch, stainless steel threaded inserts for easy and secure monitoring
$97.00
$87.30
Georg Fischer Type 240 Butterfly Valve
Pneumatically Actuated Butterfly Valve, sizes 2" to 12" glass filled polypropylene compatible
$544.00
$489.60
Georg Fischer Type 145 Butterfly Valve
Electrically actuated butterfly valve, sizes 2 to 12 inch, emergency manual override
$1,319.00
$1,187.10
Georg Fischer Type 567 Butterfly Valve
Wafer Style Butterfly Valve, sizes 2 to 12 inch, glass filled polypropylene, compatible with ANSI and DIN flanges
$194.00
$174.60
Georg Fischer Type 244 Butterfly Valve
Pneumatically Actuated Lug Style Butterfly Valve, 2 to 12 inch valve sizes
$976.00
$878.40
Georg Fischer Type 181 Ball Valve
Electrically actuated ball valve, 16 to 110mm sizes, PVDF, emergency manual override
$1,182.00
Georg Fischer 543 3-Way Horizontal Ball Valve
Horizontal orieantation, sizes available from 3/8 to 2 inch, stainless steel threaded inserts for easy and secure monitoring
$98.00
$88.20
Georg Fischer Type 147 Butterfly Valve
Electrically actuated lug style butterfly valve, 2 to 12 inch sizes, 316 stainless steel stem
$1,628.00
$1,465.20
GF Signet 2282 Guided Float Switch
Optimized chemical compatibility, for small tanks, PP and PVDF version available
$67.00
$60.30
Georg Fischer Type VFA Butterfly Valve
Wafer style butterfly valve, 2.5 to 8 inch sizes, lightweight PVC, zinc-coated steel shaft
$98.00
$88.20
Georg Fischer Type 180 Ball Valve
Electrically actuated ball valve, 16 to 110mm sizes, polypropylene, emergency manual override
$1,010.00 to $2,683.00
$909.00 to $2,414.70
Georg Fischer Type 365 Butterfly Valve
Manually operated PTFE lined lug style butterfly valve with PFA encapsulated disc, pressures up to 150 psi
$1,799.00
$1,619.10
Georg Fischer Type 170 Ball Valve
Electrically actuated 3-Way ball valve, sizes from 3/8 to 2 inch, emergency manual override
$1,056.00
$950.40
Georg Fischer Type 285 Ball Valve
Pneumatically Actuated 3-Way Ball Valves, 3/8 to 2 inch valve sizes, CPVC
$752.00
$676.80
GF Signet 4632 Chlorine Dioxide Analyzer System
Reagent free measuring, complete panel system, built in flow regulator maintains constant flow and pressure
$3,538.00
$3,184.20
Georg Fischer Type 288 Ball Valve
Pneumatically Actuated 3-Way Ball Valves, 3/8 to 2 inch valve sizes, PVC
$539.00
$485.10
GF Signet Installation Fittings
Fittings for securing insertion style flow sensors with different styles, models & materials to suit a variety of applications
$129.00
$116.10
In Stock
GF Signet 2750 pH/ORP Sensor Electronics
Submersible or in-line integral mount insallation sensor electronics featuring DryLoc connectors
$447.00
$402.30
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
$69.00
$62.10
In Stock
GF Signet 8051 Flow Integral Mount NPT
GF Signet 8051 Flow Integral Mount NPT
$69.00
$62.10
In Stock
GF Signet 3-0252 Configuration Tool
Interfaces with Signet SmartPro transmitters and blind sensors, allowing fast and easy configuration using a PC
$260.00
$234.00
In Stock
GF Signet i-Go 8058 Signal Converter
Converts 4-20mA signal into the Signet digital format (S3L) for use with GF Signet instruments
$263.00
$236.70
GF Signet 2760 pH/ORP Preamplifier
Submersible or in-line mount connector or preamplifier featuring DryLoc connectors, available with NPT or ISO threads
$296.00
$266.40
In Stock
GF Signet 2756-WT and 2757-WT pH / ORP Electrodes
Wet-tap pH and ORP electrodes featuring DryLoc connector with gold-plated contacts
$398.00 to $445.00
$358.20 to $400.50
GF Signet 8052 3/4" Integral Mount NPT
$80.00
$72.00
GF Signet 9900 Direct Conductivity/Resistivity Module
Interfaces conductivity electrodes directly to the GF Signet 9900
$239.00
$215.10
In Stock
GF Signet 3719 pH/ORP Wet-Tap Assembly
pH/ORP wet-tap assembly allows electrode installation without process shutdown
$983.00
$884.70
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
$147.00
$132.30
GF Signet pH Calibration Kit
Includes buffer solutions, mixing cups and a cup stand
$87.00
$78.30
GF Signet 7310 Switching Power Supplies
Regulated output voltage in compact and lightweight plastic housings for DIN Rail mounting
$114.00
$102.60
GF Signet 9900 Relay Module
Relay module, 2DCR for GF Signet 9900 transmitter
$117.00
$105.30
In Stock
GF Signet 9900 Rear Enclosure Kits
Rear enclosure kits allow the GF Signet 9900 Transmitter to be mounted just about anywhere
$76.00
$68.40
In Stock
Georg Fischer PE 25 Positioner
Allows continuous control of the valve position of an electrically actuated ball valve
$630.00
$567.00
GF Signet HART Modem
HART Modem for 2270 Ultrasonic Level Sensor, DIN rail and ATEX versions available
$366.00
$329.40
GF Signet 2759 pH/ORP System Tester
Battery-powered millivolt generator simulates pH values for trouble-shooting and system verification
$472.00
$424.80
GF Signet Accessory Kit
Wall Mount Accessory for 9900
$209.00
$188.10
GF Signet Optical Dissolved Oxygen Sensor Cap
Replacement Optical Dissolved Oxygen Sensor Cap (0 to 20 ppm)
$275.00
$247.50
GF Signet 3519
Wet-Tap Valve used with GF Signet 515 or 2536 Rotor-X flow sensor
$659.00
$593.10
GF Signet pH Buffer Kit
Includes 4, 7, 10 pH buffers in powder form
$7.00
$6.30
GF Signet 2100 Connector Kits
Connector Kits for GF Signet Model 2100 Turbine Flow Sensor
$12.00
$10.80
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
$113.00
$101.70
GF Signet 3-9900.397 Batch Module
adds batch capability to the 9900 Transmitter (Generation II)
$491.00
$441.90
Georg Fischer Limit Switches
Limit switches compatible with the George Fischer 807 Series rotameter
$102.00
$91.80
GF Signet 9950.393 Relay Modules
Provides additional mechanical relays and/or solid state relays and binary outputs for expanding GF Signet 9950 transmitter
$231.00
In Stock
Georg Fischer EA25-250 Actuator Positioner Board
Inputs with galvanic isolation for continuous control operation (4-20mA / 0-10V)
$864.00
$777.60
GF Signet 8059 External Relay Modules
Supplement the output capabilities of host instruments with digital S3L output
$492.00
$442.80
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
$439.00
$395.10
Georg Fischer EA15 Electric Actuator
Electric Actuator for use with the GF 127 Ball Valve, IP65 according to EN 60529
$363.00
GF Signet Adapter Kit
Angle adjustment adapter kit for field mounting the 9900 transmitter
$29.00
$26.10
GF Signet Surface Mounting Bracket
$41.00
$36.90
GF Signet KLP-201 Probe Separator
Probe separator for conductive level switch
$3.00
$2.70
GF Signet Turbidity Calibration Kit
Calibration kit for GF Signet 4150 Turbidimeter
$366.00
$329.40
GF Signet Plug
Plugs for the 9900 transmitter
$19.00
$17.10
In Stock
GF Signet Replacement Desiccant
Replacement Desiccant for the GF Signet 4150 Turbidimeter
$58.00
$52.20
Georg Fischer Position Sensor
Position sensor with 4-20mA output for electrically actuated ball valves with control function
$234.00
$210.60
GF Signet 9900 H COMM Module
Enables communication between the GF Signet 9900 and a HART®-enabled device
$309.00
$278.10
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
$344.00
$309.60
GF Signet pH Buffer Solutions
Liquid pH buffer solutions conveniently packaged in one pint bottles
$26.00
$23.40
GF Signet Stilling/Bubble Chamber
Helps removes bubbles from solutions with high O2 levels
$732.00
$658.80
GF Signet 2285-P-weight Counterweight
Counterweight for 2285 float
$5.00
$4.50
GF Signet Wet-Tap Installation Tool
Required accessory for GF Signet 2540 and 2517 wet-tap flow installations
$571.00
$513.90
GF Signet 2650 Amperometric Electronics
Provides the polarization voltage and signal conditioning required by GF Signet Amperometric Sensors
$597.00
$537.30
GF Signet 3-9950.391 Connector Kit
In-line connector kit for the GF Signet 9950 Transmitter
Call for pricing
GF Signet Standard Connector Kit
Standard Connector Kit, Right Angle, 9900 Transmitter
$48.00
$43.20
GF Signet 4 Conductor Cable
4-conductor cable with water tight connector, 13ft and 19.5ft lengths available
$141.00
$126.90
GF Signet Heavy Duty Wall Mount Bracket
Heavy duty 1/4 DIN wall mount bracket (panel mount only)
$78.00
$70.20
GF Signet 200 Retrofit Adapter
1/4-DIN retrofit adapter
$78.00
$70.20
GF Signet Replacement Cuvettes
Replacement cuvettes for GF Signet 4150 Turbidimeter
$97.00
$87.30
GF Signet 3-9950.392 Relay Module Connector Kit
Relay module connector kit for the GF Signet 9950 transmitter
Call for pricing
GF Signet RC Filter Kit
RC Filter Kit
$26.00
$23.40
GF Signet 3-4630.393 Flow Switch / Chlorine Panel
$265.00
$238.50
Georg Fischer EA25-250 Actuator Profibus DP Board
For integrating EA25, EA45, EA120 & EA250 electric actuators into a Profibus DP network
$1,109.00
$998.10
GF Signet Display Unit
Display unit for type 2260 Transmitter
$107.00
$96.30
GF Signet KLN Electrodes
Stainless steel electrode 0.5m (19.69"), 1.0m (39.37"), 1.5m (59.06")
$20.00
$18.00
GF Signet FCL Electrolyte Kit
Replacement electrolytes for servicing GF Signet free chrlorine sensors
$35.00
$31.50
GF Signet 3-2632.391 CLO2 Electrolyte
CLO2 Electrolyte, 30 ml
$36.00
$32.40
GF Signet Formazin Stock
Formazin stock for the GF Signet 4150 Turbidimeter
$70.00
$63.00
GF Signet Optional Connector Kit
Connector kit, In-Line (optional)
$112.00
$100.80
GF Signet 3-2632.398 CLO2 Sensor Service Kit
$194.00
$174.60
GF Signet SPDT Relays
1 or 2 SPDT Relays
$242.00
$217.80
GF Signet 3-2632-1 CLO2 Sensor
CLO2 sensor, 0 to 2 ppm range
$949.00
$854.10