• Skip to main content
Southfork Instruments logo
  • Home
  • Solutions

    PROCESS ANALYTICS

    • pH and ORP Solutions

    • Inline Turbidimeters

    • Biomass Measurement

    • Color Measurement

    • UV-VIS-NIR Absorbance and Concentration Measurement

    • Solids Concentration Measurement

    • Oil-in-Water Measurement

    • Water Quality Analyzers

    Flow Measurement

    • Coriolis Mass Flow Meters

    • High Pressure Coriolis Mass Flow Meters

    COMPONENTS

    • Turbidity Sensors

    • Sensor Housing & Holder Solutions

    • Inline Optical Flow Cells

    FOAM MEASUREMENT

    • Foam Detection & Control

    Need help finding a measurement solution?

    Here at South Fork Instruments, we configure tailor-made solutions for our customers’ exact measurement requirements. Find out how we can help you get the measurement you need.

    Contact Us
  • Products

    Rheonik

    • Coriolis Mass Flow Meters

    Exner

    • Turbidity Sensors

    • Housings & Accessories

    • Biomass Sensors

    SFI

    • pH/ORP Sensors

    Kemtrak

    • UV-VIS-NIR Photometers

    • Inline Turbidimeters

    • Suspended Solids Analyzers

    • Oil-in-Water Analyzers

    • Inline Optical Flow Cells

    BRAN + LUEBBE

    • Water Quality Analyzers

    • SPX Flow Water Quality Analyzers

    HYCONTROL

    • Foam Detection and Control

    REFEX

    • Refex pH & ORP Electrodes

  • Resources

    DATA SHEETS AND PRODUCT INFORMATION

    News & Resources

    • Data Sheets & Brochure Downloads

    • Application Information Downloads

    • Articles

    Careers

    • Available Positions

  • Contact
  • Call 925-461-5059
  • Home
  • Solutions
    • Coriolis Mass Flow Meters
    • High Pressure Coriolis Mass Flow Meters
    • Inline Turbidimeters
    • Color Measurement Solutions
    • Biomass Measurement
    • UV-VIS-NIR Absorbance and Concentration Measurement
    • Solids Concentration Measurement
    • Oil-in-Water Measurement
    • Turbidity Sensors
    • Extreme Service pH and ORP Sensors
    • Water Quality Analyzer
    • Process Sensors
    • Sensor Housing & Holder Solutions
    • Foam Detection & Control
    • Inline Optical Flow Cells
  • Products
    • Coriolis Mass Flow Meters
    • Exner NIR Process Sensors
    • Exner Biomass Sensors
    • Exner Housings & Accessories
    • Kemtrak Photometers
    • Kemtrak Turbidimeters
    • Kemtrak Suspended Solids Analyzers
    • Kemtrak Inline Optical Flow Cells
    • Kemtrak Oil-in-Water Analyzers
    • Hycontrol Foam Detection & Control
    • Refex pH/ORP Sensors
    • SPX Flow Water Quality Analyzers
  • Resources
    • Data Sheets and Brochures
      • RHEONIK
        • Mass Flow Meters
      • EXNER
        • EXspect Series
        • Excell Series
      • KEMTRAK
        • Photometers
      • HYCONTROL
        • SmartFoam
        • SureSense+
    • News and Resources
      • Article Archive
    • Careers
      • Available Positions
  • Contact
  • Call 925-461-5059
×
  • Home
  • Solutions
    • Coriolis Mass Flow Meters
    • High Pressure Coriolis Mass Flow Meters
    • Inline Turbidimeters
    • Color Measurement Solutions
    • Biomass Measurement
    • UV-VIS-NIR Absorbance and Concentration Measurement
    • Solids Concentration Measurement
    • Oil-in-Water Measurement
    • Turbidity Sensors
    • Extreme Service pH and ORP Sensors
    • Water Quality Analyzer
    • Process Sensors
    • Sensor Housing & Holder Solutions
    • Foam Detection & Control
    • Inline Optical Flow Cells
  • Products
    • Coriolis Mass Flow Meters
    • Exner NIR Process Sensors
    • Exner Biomass Sensors
    • Exner Housings & Accessories
    • Kemtrak Photometers
    • Kemtrak Turbidimeters
    • Kemtrak Suspended Solids Analyzers
    • Kemtrak Inline Optical Flow Cells
    • Kemtrak Oil-in-Water Analyzers
    • Hycontrol Foam Detection & Control
    • Refex pH/ORP Sensors
    • SPX Flow Water Quality Analyzers
  • Resources
    • Data Sheets and Brochures
      • RHEONIK
        • Mass Flow Meters
      • EXNER
        • EXspect Series
        • Excell Series
      • KEMTRAK
        • Photometers
      • HYCONTROL
        • SmartFoam
        • SureSense+
    • News and Resources
      • Article Archive
    • Careers
      • Available Positions
  • Contact
  • Call 925-461-5059

Refex pH/ORP Sensors

South Fork Industries is proud to supply Refex pH and ORP electrodes for use in many industrial processes. These sensors are manufactured in several styles and excel in both extremely harsh and general-purpose applications.

DISCUSS SOLUTIONS WITH OUR EXPERTS

REFEX pH AND ORP ELECTRODES PROVIDE STABLE, ACCURATE READINGS IN THE MOST DEMANDING APPLICATIONS

At the heart of every Refex electrode is a unique nonporous reference system that delivers high-quality performance, stable readings, and accurate measurements. Refex sensors last many times longer than conventional electrodes with porous junction reference cells, require minimal maintenance, and exhibit minimal drift. Refex sensors are available in many industry standard sizes, and can readily retrofitted for existing installations.

The Refex reference is a patented, highly stable, non-porous polymeric interface. The active reference area comprises the entirety of the outside surface of the electrode and this extremely large contact area means that electrode performance is supremely resistant to coating. Drift and premature “death” from the poisoning effects of substances such as cyanide, ammonia, and sulfides are eliminated because the polymeric reference material is conductive to ions but being non-porous, does not allow process material to diffuse into the cell; the reference operates electrically, but electrolyte and process fluids are not exchanged.

Refex probes are ideal for both extreme and remote/unattended applications where pH sensor reliability is a must. Highly resistant to poisoning and electrode dilution, REFEX sensors can be used with great success in applications with oily/fatty process water/wastewater as they are largely impervious to the greater pollution loads these applications carry.

DOWNLOAD: REFEX Technology Overview

REFEX PROBES

Refex probes are available in combination or separate cell versions and in industry standard sizes, designed to fit in any existing or new ‘socket’ where pH or ORP measurements are made. These sensors can be used in all applications, particularly those where fouling and drift are common, and have a usable lifetime that is at least five times longer than conventional sensors.

Probes are available in both 12mm diameter and large volume NPT thread packages. The high reliability of our pH/ORP sensor range ensures that maintenance requirements and cost of ownership are kept very low.

REFEX 12MM SEPARATE PH AND REFERENCE PROBES

Refex 12mm separates are available in all industry standard lengths styles to ensure they will fit in any 12mm ‘socket’ where an analog pH or ORP measurement is made. Refex sensors work will all popular pH/ORP transmitters with high impedance inputs.

Refex reference sensors are a tremendous upgrade to traditional porous/flowing junction reference probes and can be used in all applications, especially those where fouling or poisoning conditions exist. With lifetimes expected to be at least 5 times longer than traditional designs, Refex reference electrodes represent significant savings in maintenance and replacement costs.

  • 2001 pH Comb.

  • 2002 ORP

  • 5610 pH Separate

  • 5710 Ref. Separate

2001 pH Comb.

Probes-2001-pH-Comb

Typical Applications: Potable Water, Optimized Coagulation, Low Ionic Raw Water, Ultra-Pure Water (UPW), Oil & Gas Sour Water, Petrochemical Process Water, Chlor-Alkali - Chlorinated and Waste Brines, Industrial Waste Water, Waste Water Treatment, Heavy Metal Processes, Pulp and Paper, more…

DATASHEET DOWNLOAD 2001 12mm pH Combination Electrode
DATASHEET DOWNLOAD 2001 NPT Threaded pH Combination Electrode
REFEX Technology Overview

2001 pH Combination Electrodes

Process Footprint 12mm diameter with free turning Pg 13.5 connector
¾” NPT
1” NPT
Electrode Length 12mm: 120, 225, 325, 425mm
¾” NPT: 145mm / 5.7” (20mm / ¾” immersion)
1” NPT: 145mm / 5.7” (64mm / 2½” immersion)
Measured Values pH: 0…12
Temperature: Optional Pt100 or Pt1000 sensor
Process Temperature Range 0 to 100°C / 32 to 212°F
Process Pressure Range 0 to 20 barg / 0 to 290 psig @ 50°C / 122°F
E0 Point 6.8 pH (±20mV)
Liquid Earth Point Optional with ¾” and 1” NPT probes
Connectivity Analog to compatible pH/ORP analyzers (dual high impedance inputs recommended)
Rating IP69
Impedance Glass: 200MΩ Nom.
Reference: <100kΩ
Process Contact Materials Lead-free glass
PPS (¾” NPT version)
PVDF (1” NPT version)
Reference system: REFEX™ polymeric Junction
Cable Length 1m, 3m, 5m, 10m

2002 ORP

2002 Combination Electrodes

Typical Applications: Potable Water, Optimized Coagulation, Low Ionic Raw Water, Ultra-Pure Water (UPW), Oil & Gas Sour Water, Petrochemical Process Water, Chlor-Alkali - Chlorinated and Waste Brines, Industrial Waste Water, Waste Water Treatment, Heavy Metal Processes, Pulp and Paper, more…

DATASHEET DOWNLOAD 2002 12mm REDOX-ORP Combination Electrode
DATASHEET DOWNLOAD 2002 NPT Threaded REDOX-ORP Combination Electrode
REFEX Technology Overview

2002 Combination Electrodes

Process Footprint 12mm diameter with free turning Pg 13.5 connector
¾” NPT
1” NPT
Electrode Length 12mm: 120, 225, 325, 425mm
¾” NPT: 145mm / 5.7” (20mm / ¾” immersion)
1” NPT: 138mm / 5.5” (60mm / 2.36” immersion)
Measured Values ORP: -1500…+1500mV
Process Temp. Range 0 to 100°C / 32 to 212°F
Process Pressure Range 0 to 20 barg / 0 to 290 psig @ 50°C / 122°F
Connectivity Analog to compatible pH/ORP analyzers (dual high impedance inputs recommended)
Rating IP69
Impedance Reference: <100kΩ
Process Contact Materials Lead-free glass
Platinum
PPS (¾” NPT version)
PVDF (1” NPT version)
Reference System – REFEX™ polymeric Junction
Cable Length 1m, 3m, 5m, 10m

5610 pH Separate

5610 pH Separate

Typical Applications: Potable Water, Optimized Coagulation, Low Ionic Raw Water, Ultra-Pure Water (UPW), Oil & Gas Sour Water, Petrochemical Process Water, Chlor-Alkali - Chlorinated and Waste Brines, Industrial Waste Water, Waste Water Treatment, Heavy Metal Processes, Pulp and Paper, more…

DATASHEET DOWNLOAD 5610 12mm Glass pH Electrode
REFEX Technology Overview

5610 12mm Glass pH Electrode

Process Footprint 12mm diameter with free turning Pg 13.5 connector
Electrode Length 120mm
Measured Values pH: 0…12
Temperature: Optional Pt100 or Pt1000 sensor
Process Temp. Range 0 to 100°C / 32 to 212°F
Process Pressure Range 0 to 20 barg / 0 to 290 psig @ 50°C / 122°F
E0 Point 6.8 pH (±20mV)
Connectivity Analog to compatible pH/ORP analyzers
Rating IP69
Impedance Glass: 200MΩ Nom.
Process Contact Materials Lead-free glass
Cable Length 1m, 3m, 5m, 10m, 15m

5710 Ref. Separate

5710_12mm_Reference_Electrode

Typical Applications: Potable Water, Optimized Coagulation, Low Ionic Raw Water, Ultra-Pure Water (UPW), Oil & Gas Sour Water, Petrochemical Process Water, Chlor-Alkali - Chlorinated and Waste Brines, Industrial Waste Water, Waste Water Treatment, Heavy Metal Processes, Pulp and Paper, more…

DATASHEET DOWNLOAD 5710 12mm Reference Electrode
REFEX Technology Overview

5710 12mm Reference Electrode

Process Footprint 12mm diameter with free turning Pg 13.5 connectorr
Electrode Length 120mm
Measured Values Separate reference cell for pH and ORP
Process Temp. Range 0 to 100°C / 32 to 212°F
Process Pressure Range 0 to 20 barg / 0 to 290 psig @ 50°C / 122°F
Connectivity Analog to compatible pH/ORP analyzers
Rating IP69
Impedance <100kΩ
Process Contact Materials REFEX™ polymeric Junction
Cable Length 1m, 3m, 5m, 10m, 15m

Have More Questions?

Take a moment to get in touch with our expert engineers and technologists; we'll guide you to a solution for your measurement.

DISCUSS SOLUTIONS WITH US

Want help breaking down solutions for your measurement needs?

Please call us at (925) 461-5059 or fill out this form to get in touch with us.

Step 1 of 4

25%
  • I'm Looking For:

  • I'm Interested In:

    (Check all that apply)
  • Give Us Some Details:

  • This field is for validation purposes and should be left unchanged.

SOUTH FORK INSTRUMENTS
3845 Buffalo Road
Auburn, CA 95602
Tel: (+1) 925-461-5059
Fax: (+1) 925 553 3531

South Fork Instruments Logo

HOME
DATA SHEETS
NEWS & RESOURCES
TERMS & CONDITIONS

  • Home
  • Solutions
    • Coriolis Mass Flow Meters
    • High Pressure Coriolis Flow Meters
    • Turbidity Measurement Solutions
    • Color Measurement Solutions
    • UV-VIS-NIR Concentration Measurement
    • Solids Concentration Measurement
    • Oil-in-Water Measurement
    • NIR Optical Probes & Process Sensors
    • pH & ORP Electrodes
    • Water Quality Analyzers
    • Process Sensors
    • Sensor Housing & Holder Solutions
    • Foam Detection & Control
  • Products
    • Rheonik Mass Flow Meters
    • Exner NIR Process Sensors
    • Exner Housings & Accessories
    • Kemtrak Photometers
    • Kemtrak Turbidimeters
    • Kemtrak Suspended Solids Analyzers
    • Kemtrak Oil-in-Water Analyzers
    • Hycontrol Foam Detection & Control
    • Refex pH & ORP Electrodes
    • SPX Flow Water Quality Analyzers
  • Resources
    • Data Sheets and Brochures
    • News and Resources
    • Careers
  • Contact
  • Call 866-953-4668