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Product Selection Filter Tool / Online Sensors & Analyzers / Showing 1 - 50 of 54 results
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  • CX3100

    NOW Available!

    Our CX3100 Conductivity Controller is an excellent choice for high temperature, high pressure applications. Compatible with our CS675, CS676, and CS875 stainless steel boiler conductivity probes, the CX3100 is the only Sensorex controller with automatic temperature compensation up to 200°C. The CX3100 replaces the Sensorex CX3000, and features an updated user interface with user friendly full text and graphical display.
    • Monitors conductivity, resistivity, TDS, or salinity
    • 1/2 DIN Transmitter/Controller with full text and graphical display
    • Ideal for use in high temperature applications (with stainless steel conductivity probes)
    • Automatic temperature compensation up to 200°C (PT1000 RTD)
    Add to cart Details
  • TX3100

    NOW Available!

    Our TX3100 is an intelligent pH and ORP controller/transmitter for reading pH and ORP sensors and programmable process control. This controller replaces the TX3000 1/2 DIN pH/ORP controller and features an updated user interface with user friendly full text and graphical display. This makes operation, calibration, and maintenance easier for operators in treatment plants. The TX3100 also features a solution ground input for accurate readings in applications with ground loop issues.
    • NEW graphical display shows sensor data and aids in the calibration process
    • 2 programmable relays (Hi/Lo, Hi/Hi, or Lo/Lo)
    • Solution ground input eliminates measurement errors caused by reference ground potentials
    • Compatible with all Sensorex sensors with tinned leads and PT1000 RTD temp comp
    Add to cart Details
  • 1/8 DIN EC transmitter
    The CX10 is a convenient and cost effective solution for monitoring conductivity or resistivity of water. Save space in your panel with the small footprint 1/8 DIN case. This EC transmitter displays conductivity or resistivity readings on an easy to read LCD screen. The 4-20mA signal output can be conveniently integrated into a range of process control systems.
    • Easy to install 1/8 DIN Case
    • Isolated, reversible 4-20mA output
    • Compatible with sensor utilizing spade lug or tinned lead connectors
    • Clear LCD displays conductivity, resistivity, or temperature
    • 100-240 VAC power supply
    Note: This EC transmitter is only compatible with sensors that have spade lug or tinned lead connectors and 10k NTC temperature compensation.
    Add to cart Details
  • 1/8 DIN EC Controller
    The CX20 conductivity controller is a convenient and cost effective solution for monitoring and maintaining conductivity. Save space in your panel with the small footprint 1/8 DIN case. Use the two sets of relay outputs to program process control, including management of alarms and chemical dosage systems.
    • Easy to install 1/8 DIN Case
    • Two sets of programmable relays for conductivity or resistivity
    • Clear LCD displays conductivity, resistivity, or temperature
    • 100-240 VAC power supply
    Note: Controller is only compatible with sensors that have spade lug or tinned lead connectors and 10k NTC temperature compensation.
    Add to cart Details
  • dissolved oxygen sensor
    Our DO1200 galvanic dissolved oxygen sensors measure the oxygen content of water using an electrochemical measurement principle. Built in an economical but durable 12mm epoxy body, these sensors are suitable for portable or benchtop use. The DO1200 can also be installed inline for continuous monitoring applications by upgrading to a PTFE membrane cap. The sensor is compatible with our FC75P 3/4 inch in-line fitting for mounting into 3/4 inch FNPT threaded tees.
    • Galvanic (electrochemical) measurement principle
    • Replaceable membrane cap and fill solution
    • 12mm durable epoxy body
    • For benchtop, portable, or inline use
    Request a Quote
    Details
  • 4-20mA display
    The LPM100 is a durable, loop-powered 4-20mA display for use in process monitoring applications. Monitor various parameters, including UV transmittance, free chlorine, dissolved oxygen, and more. This large display meter can be mounted in various configurations - including pipe mounting with our pipe mount kit. Simple installation and operation make it an ideal solution for process read out monitoring.
    • Compatible with Sensorex 4-20mA output sensors
    • Durable for harsh environmental conditions
    • Simple set up and operation
    • User-friendly interface
    • One year limited warranty
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  • light duty pH probe
    The pH6000 is a light duty option for continuous monitoring of surface water and ground water, including environmental and industrial source water monitoring. The durable Ultem® body permits use in the field, while conferring chemical compatibility. Double junction reference protection allows use in environments that contain reference fouling contaminants, including heavy metals. Fully integrated cable comes in a 10 foot (3 meter) standard length, with custom cables available by request.
    • Durable Ultem® body
    • Booted BNC protects meter connection
    • Low maintenance sealed gel reference design
    • Double junction prevents reference cell contamination
    • 1 year limited warranty
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  • Submersible pH Electrode
    This submersible pH electrode is ideal for tanks, flumes and sewer lines. The self-cleaning, flat-surface design makes the S651CD resistant to coating, increasing time between maintenance cycles. Based on our popular S650CD, the S651CD features protective feet to guard the pH glass against breakage. Double junction reference protection extends the lifetime of the sensor. Should a replacement sensor be required, the electrode is equipped with quick disconnect BNC connections to minimize downtime due to electrode maintenance. Designed for use with our S653 Cable Assembly for a complete Submersible Flat-Surface, Self-Cleaning pH measurement solution.
    • Flat surface design resists coating
    • Double junction reference protection extends sensor lifetime
    • Use with our S653 Cable Assembly for quick and easy maintenance
    • Reliable CPVC construction
    • One year limited warranty
    Add to cart Details
  • Submersible pH Electrode
    Our S651CD-HF submersible pH electrode is ideal for acidic environments that utilize hydrofluoric acid (HF). The self-cleaning, flat-surface design makes the this electrode resistant to coating, increasing time between maintenance cycles. Protective feet guard the pH glass against breakage, and double junction reference protection extends the lifetime of the sensor. Should a replacement sensor be required, the S651CD-HF is equipped with quick disconnect BNC connections to minimize downtime due to electrode maintenance. Designed for use with our S653 Cable Assembly for the S651CD for a complete Submersible Flat-Surface, Self-Cleaning pH measurement solution, even in acidic HF conditions.
    • HF resistant pH glass for extended lifetime in harsh conditions
    • Flat surface design resists coating
    • Double junction reference protection extends sensor lifetime
    • Use with our S653 Cable Assembly for quick and easy maintenance
    • Reliable CPVC construction
    • One year limited warranty
    Add to cart Details
  • submersible orp electrode
    This submersible ORP electrode is ideal for tanks, flumes and sewer lines. The self-cleaning, flat-surface design makes the S651CD-ORP resistant to coating, increasing time between maintenance cycles. Protective feet guard sensing surface from breakage, and double junction reference protection extends the lifetime of the sensor. Should a replacement sensor be required, the S651CD-ORP is equipped with quick disconnect BNC connections to minimize downtime due to electrode maintenance. Designed for use with our S653 Cable Assembly for the S651CD for a complete Submersible Flat-Surface, Self-Cleaning ORP measurement solution.
    • Flat surface design resists coating
    • Double junction reference protection extends sensor lifetime
    • Use with our S653 Cable Assembly for quick and easy maintenance
    • Reliable CPVC construction
    • One year limited warranty
    Add to cart Details
  • 1/8 DIN ORP transmitter
    The TX10 pH and ORP transmitter is a convenient and cost effective solution for pH and ORP monitoring. This transmitter allows you to save space in your panel with the small footprint of its 1/8 DIN case. The isolated, reversible 4-20mA output of the transmitter provides versatility for a range of process control possibilities.
    • Easy to install 1/8 DIN Case
    • 4-20mA current output
    • Compatible with sensors that utilize spade lug connectors
    • Clear LCD displays pH or ORP and temperature
    • 100-240 VAC power supply
    Note: The TX10 pH and ORP transmitter is only compatible with sensors that have spade lug connectors.
    Add to cart Details
  • automatic pH controller

    TX20 pH and ORP Controller

    $427.20
    Our TX20 Automatic pH Controller is a convenient and cost effective solution for monitoring and maintaining both pH and ORP. This controller allows you to save space in your panel with its small footprint 1/8 DIN case. You can also use the two on/off relay outputs to program process control, including management of alarms and chemical dosage systems.
    • Easy to install 1/8 DIN Case
    • Two on/off controls (relay outputs)
    • Compatible with sensors that utilize spade lug connectors
    • Clear LCD displays pH or ORP and temperature
    • 100-240 VAC power supply
    Note: The TX20 Automatic pH Controller is only compatible with sensors that have spade lug connectors.
    Add to cart Details
  • replacement pH sensor cartridge
    Our S8000 series of pH deliver the most reliable online pH monitoring in a unique, modular package that minimizes total cost of ownership. These sensor cartridges can be changed in a few seconds with no tools or re-wiring required. Extended sensor lifetime with ERP Reference System.
    • Reliable performance in demanding applications
    • Lightning fast sensor changes with no tools required
    • Extended sensor lifetime
    • All mounting hardware is reuseable. Only replace the quick-change sensor cartridge
    • One year limited warranty
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  • inline pH probe

    Now Available with optional MODBUS/RS485 Interface

    In heavily contaminated wastewater or chemical processing applications, an inline pH probe typically wears out fast. Constantly replacing an inline pH probe can feel like a waste of time and money. We created our modular, quick disconnect S8000 sensor packages for these types of heavy duty industrial applications. The sensor can be replaced in a few seconds with no tools or re-wiring required by swapping the S8000CD Quick Change Replacement Cartridge. Reuse the cable assembly and other mounting hardware for a low cost of ownership.
    • Recommended for challenging water and wastewater applications
    • Uses direct 4-20mA analog or MODBUS/RS485 digital output signal to integrate with a PLC or other control system
    • Fast sensor changes with no tools required
    • Reusable cable and mounting hardware
    • Low total cost of ownership
    • One year limited warranty
    Optional Accessories:
    Select options Details
  • differential pH electrode
    Our SD7000 series of differential pH sensor offers unsurpassed pH measurement accuracy by minimizing reference junction fouling and eliminating ground loops. These units deliver greater reliability and less required maintenance than a conventional combination pH sensor. Extended sensor lifetime can be achieved by replacing the sensor reference (salt bridge). Reliably measures pH in environments with rapid temperature changes with built-in quick response automatic temperature compensation (ATC).
    • Reliable measurement performance with true differential pH measurement technology using solution ground
    • Direct-fit compatibility for several popular Hach® & Water Analytics® models
    • Perfect for pressurized applications with sealed, no maintenance reference design
    • Built for difficult applications & constructed of chemically-resistant Ryton Polyphenylene Sulfide (PPS)
    • Two year limited warranty
     
    Add to cart Details
  • differential pH probe
    Applications such as pulp and paper or dye manufacturing and industrial wastewater treatment may expose pH probes to harsh conditions and chemicals. A differential pH probe utilizes a special measurement technique, which extends the working lifetime of the sensor in challenging applications. Replacing the sensor reference (salt bridge) and buffered electrolyte solution can extend working lifetime, which saves timely, costly replacements. Our SD7420CD features differential sensor technology with a direct 4-20mA output, so it can be integrated into control systems without the use of a transmitter or controller.
    • Utilizes differential measurement technology for extended sensor lifetime
    • No transmitter or controller required
    • Easy and infrequent maintenance
    • Constructed of chemically-resistant Ryton® Polyphenylene Sulfide (PPS)
    • Built-in automatic temperature compensation
    • Two Year limited Warranty
    Add to cart Details
  • differential ORP sensors
    When an ORP sensor is constantly measuring a wastewater treatment process, it will be exposed to chemicals, suspended solids, and other contaminants. These contaminants can cause fouling of the ORP sensor reference, leading to sensor failure. Differential ORP sensors utilize three electrodes instead of the conventional two. This special design allows the sensor reference (salt bridge) and buffered electrolyte solution to be replaced, which extends working lifetime. Our SD7420CD features differential sensor technology with a direct 4-20mA output, so it can be integrated into control systems without the use of a transmitter or controller.
    • True differential measurement technology using solution ground
    • Virtually zero ground loop measurement error
    • No transmitter or controller required
    • Constructed of durable Ryton® PPS
    • Two year limited warranty
    Add to cart Details
  • differential pH
    Continuous online pH monitoring in wastewater and coating industrial applications leads to contamination and eventually requires sensors to be replaced. A differential pH sensor utilizes a measurement technique designed to extend the working lifetime of sensors in challenging applications. Replacing the sensor reference (salt bridge) and buffered electrolyte solution can prevent sensor replacements, saving time and money. Our SD7500 Series features a combination sensor output; these differential pH sensors can be used with any conventional pH/ORP transmitter.
    • Differential measurement technology with solution ground
    • Buffered electrolyte reference resists fouling
    • Compatible with any conventional pH/ORP transmitter
    • Easy and infrequent maintenance
    • Automatic temperature compensation
    • Two Year limited Warranty
    Add to cart Details
  • differential ORP probe
    Continuous online ORP monitoring in applications like metal finishing and chrome waste treatment wears down ORP sensors, leading to reference contamination. A differential ORP probe utilizes three electrodes instead of two, which extends the sensor's working lifetime in challenging applications. Replacing the sensor reference (salt bridge) and buffered electrolyte solution can prevent sensor replacements, saving time and money. The SD7500CD-ORP is a self-powered differential ORP probe, allowing use with any conventional ORP transmitter.
    • Differential measurement technology with solution ground
    • Buffered electrolyte reference resists fouling
    • Compatible with any conventional pH/ORP transmitter
    • Replaceable double junction salt bridge
    • Refillable reference solution
    • Two Year limited Warranty
    Add to cart Details
  • differential ORP sensor
    Our SD7000 differential ORP sensor offers unsurpassed ORP measurement accuracy by minimizing reference junction fouling and eliminating ground loops. The SD7000 series delivers greater reliability and less required maintenance than a conventional combination ORP sensor. Extended sensor lifetime can be achieved by replacing the sensor reference (salt bridge). Reliably measures ORP in environments with rapid temperature changes with built-in quick response automatic temperature compensation (ATC).
    • Reliable measurement performance: True differential ORP measurement technology using solution ground
    • Direct-fit Compatibility: Replacement sensor for several popular Hach® & Water Analytics® models
    • Perfect for pressurized applications: Sealed, no maintenance reference design
    • Built for difficult applications: Constructed of chemically-resistant Ryton Polyphenylene Sulfide (PPS)
    • Two year limited warranty: We stand behind all our products with the Sensorex Guarantee
    * Hach is a registered trademark of Danaher. No affiliation, endorsement or sponsorship is stated or implied.
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  • pool pH sensor
    Maintaining proper pH in a swimming pool is critical to chlorine sanitizing activity. Our pH5000 swimming pool pH sensor is reliable and easy to use - perfect for most swimming pool pH testing applications. The durable polycarbonate body stands up to the usual wear and tear, with built in protection for the measuring pH glass. No maintenance is required to keep the sensor working, with a convenient sealed gel reference design.
    • Very fast response time
    • No maintenance required
    • Durable construction
    • Instantly ready for use
    • One year limited warranty
     
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  • Submersion ORP Sensor

    Now Available with optional MODBUS/RS485 Interface

    Our S8000 series of ORP sensors deliver the most reliable online ORP monitoring in a unique, modular package that minimizes total cost of ownership. Customize to exactly what you need for your application with optional electronic amplifier, 4-20 mA or MODBUS/RS485 module, and custom automatic temperature compensation configurations. Sensors can be changed in a few seconds with no tools or re-wiring required by swapping the S8000CD-ORP Quick Change Replacement Cartridge.
    • Reliable performance in demanding applications
    • Lightning fast sensor changes
    • Perfect for pressurized applications
    • Low total cost of ownership
    • One year limited warranty
    Optional Accessories:
    Select options Details
  • 4-20mA pH Transmitter
    Our TX100 is a fully-featured pH/ORP transmitter for use with pH and ORP sensors. The large display shows pH/ORP value simultaneously with temperature. Versatile mounting options for wall, panel, DIN rail or pipe mount.
    • Reliable pH/ORP monitoring
    • Simple sensor calibration
    • Automatic sensor maintenance alerts
    • Compatible with a wide variety of Sensorex pH/ORP sensors
    • One year limited warranty
    Note: Transmitter is only compatible with sensors with tinned leads.
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  • TX105
    Our TX105 is a fully-featured pH/ORP transmitter for use with pH and ORP sensors. The large display shows pH/ORP value simultaneously with temperature. Versatile mounting options for panel, DIN rail or pipe mount.
    • Reliable pH/ORP monitoring
    • Simple sensor calibration
    • Automatic sensor maintenance alerts
    • Compatible with a wide variety of Sensorex pH/ORP sensors
    • One year limited warranty
    Note: Transmitter is only compatible with sensors with tinned leads.
    Add to cart Details
  • ORP transmitter
    Our TX2000 is an intelligent transmitter/controller for reading pH and ORP sensors and programmable process control. The large LCD display shows pH/ORP value simultaneously with temperature. Compatible with all Sensorex combination-style pH and ORP sensors. Versatile mounting options for panel or wall mounting.
    • Reliable pH/ORP monitoring and process control
    • Simple sensor calibration
    • High-accuracy measurements
    • Compatible with all Sensorex combination-style pH/ORP sensors
    • One year limited warranty
    Note: Transmitter is only compatible with sensors with tinned leads.
    Add to cart Details
  • strantrol orp
    Our S420 series of ORP sensors deliver reliable online ORP (REDOX) monitoring as a direct-fit replacement for Strantrol* W2T3067 or W2T3068. Extended sensor lifetime is achieved through a large electrolyte reservoir. Durable CPVC construction with built-in protection for the pH measuring surface. Booted BNC connector included with optional cable lengths. Compatible with all ORP meters accepting a BNC connector.
    • Reliable measurement performance
    • Direct-fit Compatibility
    • Perfect for pressurized applications
    • Instantly ready for use
    • One year limited warranty
      * Strantrol is a registered trademark of Evoqua Water Technologies LLC. No affiliation, endorsement or sponsorship is stated or implied.
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  • Strantrol pH Sensor
    Our S420 series of pH sensors deliver reliable online pH monitoring as a direct-fit replacement for Strantrol* W2T4677 or W2T4675. Extended sensor lifetime is achieved through a large electrolyte reservoir. Durable CPVC construction with built-in protection for the pH measuring surface. Booted BNC connector included with optional cable lengths. Compatible with all pH meters accepting a BNC connector.
    • Reliable measurement performance
    • Direct-fit Compatibility
    • Perfect for pressurized applications
    • Instantly ready for use
    • One year limited warranty
      * Strantrol is a registered trademark of Evoqua Water Technologies LLC. No affiliation, endorsement or sponsorship is stated or implied.
    Add to cart Details
  • online process ph sensor

    Now Available with optional 4-20mA or MODBUS/RS485 Interface

    Our S272 series of pH sensors deliver reliable online pH monitoring for in-line or submersion installation configuration. Extended sensor lifetime with double-junction technology. Minimal maintenance required due to flat glass measurement surface. A versatile sensor for moderate and multi-purpose applications.
    • Reliable performance in demanding applications
    • Extended sensor lifetime
    • Optional 4-20mA or MODBUS/RS485 output
    • Input Voltage Options:
      • 12V DC – MODBUS only
      • 24V DC – 4-20mA & MODBUS
    • Versatile design for submersion or in-line mounting
    • One year limited warranty
    Select options Details
  • online process ph sensor
    Our S272 series of pH sensors deliver reliable online pH monitoring for in-line or submersion installation configuration. Extended sensor lifetime with double-junction technology. Minimal maintenance required due to flat glass measurement surface. A versatile sensor for moderate and multi-purpose applications.
    • Reliable performance in demanding applications
    • Extended sensor lifetime
    • Versatile design for submersion or in-line mounting
    • One year limited warranty
    Select options Details
  • acu-trol ph sensor
    Our S465 series of pH and ORP sensors deliver reliable online pH monitoring as a direct-fit replacement for Acu-Trol* 744000260 (AKpH-FB) pH sensor. Extended sensor lifetime is achieved through a large electrolyte reservoir. Durable PPS construction with built-in protection for the pH measuring surface. BNR connector. Designed for use with Acu-Trol® controllers AK110, AK600, AK2100.
    • Reliable measurement performance
    • Direct-fit Compatibility
    • Perfect for pressurized applications
    • Instantly ready for use
    • One year limited warranty
      * Acu-Trol is a registered trademark of Pentair. No affiliation, endorsement or sponsorship is stated or implied.
    Add to cart Details
  • The UVT-LED-SW Online UV Transmittance Sensor provides reliable UVT measurements for UV disinfection optimization. Ideal for continuous monitoring of open channel wastewater UV disinfection, the UVT-LED-SW features an LED light source that lasts up to 5x longer than traditional mercury lamps. Our patented automatic cleaning and calibration system reduces fouling and drift, so technicians don't have to waste time servicing the units daily. Available with inline or submersion installation kits (see "What's Included" below). Perfect for first time installs or retrofits of existing UV disinfection monitoring systems.
    • Reliable continuous monitoring with patented automatic cleaning & calibration
    • Stable measurements driven by high-performance UV-C LED technology
    • Direct 4-20mA output (no transmitter or controller required)
    • Inline OR submersion installation available
    • Free factory scheduled maintenance for the first year
    Request a Quote  
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  • conductivity controller cooling tower
    Our CX2000 is a fully-featured conductivity controller and 4-20mA transmitter for reading contacting conductivity sensors and programming process control. Set points are easily selected for 2 relay outputs and 1 wash control. Sensor calibration is simple with preset standards. The large LCD display features auto-sense back-light technology for use in all environments, including cooling tower controller applications.
    • Reliable process control
    • Lightning fast sensor calibration
    • Perfect for use in all environments
    • Compatible with a wide variety of sensors
    • One year limited warranty
    Note: Transmitter is only compatible with sensors with tinned leads and either 30k NTC or Pt1000Ω RTD temperature compensation.
    Select options Details
  • pH electrode
    Our S222 series of pH sensors are flexible for light-duty in-line or submersion online pH monitoring and control applications. Replace sensors in seconds with the quick disconnect BNC design. The kit includes S222CD pH electrode and S653 Cable Assembly. S653 cable assembly comes equipped with 1/2" NPT threads for easy submersion installation. For in-line use, install with a 3/4" mounting gland (Sensorex FC75P; sold separately).
    • Reliable performance in light-duty applications: Recessed bulb design ensures reliable performance
    • Lightning fast sensor changes: Modular design allows replacement cartridges to be changed in seconds without tools
    • Perfect for pressurized applications: Sealed, no maintenance reference design
    • Low total cost of ownership: All mounting hardware is reuseable. Only replace the quick-change sensor cartridge
    • One year limited warranty: We stand behind all our products with the Sensorex Guarantee
    Select options Details
  • Light Duty pH Sensor
    Our S222 series of pH sensors are flexible for light-duty in-line or submersion online pH monitoring and control applications. Replace sensors in seconds with the quick disconnect BNC design. For use with the S653 series cable assembly, which comes equipped with 1/2" NPT threads for easy submersion installation. For in-line use, install with a 3/4" mounting gland (Sensorex FC75P; sold separately). For complete kit, purchase S222CD Light-Duty Online Process pH Sensor Kit.
    • Reliable performance in light-duty applications
    • Lightning fast sensor changes with simple quick disconnect BNC design
    • Perfect for pressurized applications
    • All mounting hardware is reuseable. Only replace the quick-change sensor cartridge
    • One year limited warranty
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  • Reduce Maintenance Time and Increase Process Visibility
    • Communicates directly via 4-20 mA or Modbus Output
    • Configuration and calibration done with free web-based software
    Resistant to Corrosion, Coating, and Fouling
    • Noryl body has a wide solvent tolerance temperature and stability
    • Installed both in-line and submersion applications
    Wide Measurement Range
    • Measures up to 2,000,000 uS
    Select options Details
  • acu-trol orp sensor for pentair controller
    Our S465 series of ORP sensors deliver reliable online ORP (REDOX) monitoring as a direct-fit replacement for Acu-Trol* 744000330 (AKORP-FB) platinum or 744000390 (AKORG-FB) gold ORP sensors. Extended sensor lifetime is achieved through a large electrolyte reservoir. Durable PPS construction with built-in protection for the pH measuring surface. Booted BNC connector included with optional cable lengths. Designed for use with Acu-Trol® controllers AK110, AK600, AK2100.
    • Reliable measurement performance
    • Direct-fit Compatibility
    • Perfect for pressurized applications
    • Instantly ready for use
    • One year limited warranty
      * Acu-Trol is a registered trademark of Pentair. No affiliation, endorsement or sponsorship is stated or implied.
    Select options Details
  • Ideal for Heavy Duty Applications
    • Made from 316 Stainless Steel and PEEK
    • Robust single body design
    Multiple cell constants. temperature/pressure ratings and insertion lengths
    • 2 options for cell constants: 0.1/cm and 1.0/cm
    • 3 options of increasing temperature and pressure ratings
    • 2 options for insertion lengths: standard and extended
    Ultra-high temperature version ideal for boiler applications
    Select options Details
  • free chlorine sensor
    Chlorine exists in different chemical forms in solution, including free chlorine (hypochlorite ion and hypochlorous acid) and combined chlorine. Free chlorine is the only form that can perform disinfection, so knowing free chlorine concentration is critical for applications like water and wastewater treatment. FCL free chlorine sensors from Sensorex provide a direct measurement of free chlorine in parts per million (ppm). Using field tested amperometric technology, our FCL sensors perform continuous monitoring without any additional reagents. With a direct 4-20mA output, the FCL sensors can be used with any instrument accepting a 4-20mA input or connected directly to a PLC or SCADA.
    • Direct free chlorine measurement in parts per million (ppm)
    • No reagents requried
    • Direct 4-20mA output
    Recommended accessories:
    Select options Details
  • inline pH probe

    Now Available with optional MODBUS/RS485 Interface

    The S8200-ORP is a self-cleaning ORP sensor that delivers the most reliable online monitoring in a unique, modular package that minimizes total cost of ownership. Customize to exactly what you need for your application with optional electronic amplifier, 4-20 mA or MODBUS/RS485 module, and custom automatic temperature compensation configurations. Sensors can be changed in a few seconds with no tools or re-wiring required by swapping the S8000CD-ORP Quick Change Replacement Cartridge.
    • Reliable performance in demanding applications
    • Lightning fast sensor changes
    • Perfect for pressurized applications
    • Low total cost of ownership
    • One year limited warranty
    Optional Accessories:
    Select options Details
  • electrodeless conductivity measurement package
    The SensoPRO Toroidal Conductivity Monitoring System delivers reliable conductivity monitoring with toroidal (inductive) sensor technology. The NEW EX2000RS toroidal conductivity transmitter has one 4-20 mA output, an RS-485 serial interface for use with Modbus RTU or ASCII, and can display conductivity, percent concentration, TDS, and salinity. The durable Noryl-body TCS3020 Toroidal (Inductive) Conductivity / TDS Sensor is resistant to fouling, coating, and corrosion and requires virtually no maintenance.
    • Most reliable conductivity / TDS monitoring
    • Minimal sensor maintenance requirements
    • Displays conductivity, TDS, % concentration, and salinity
    • Robust integration with Modbus RTU or ASCII
    • Sensorex Guarantee: One year limited warranty
    This rugged toroidal conductivity monitoring system is appropriate for harsh applications in Cooling Tower Water Treatment, Brine Concentration Measurement, Wet Scrubbers, and other environments involving high conductivity or high levels of dissolved solids. Click here to watch a video demo of the EX2000RS setup menu.
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  • Toroidal Conductivity Transmitter Without Display
    Our TCSMA online toroidal conductivity transmitter without display is built for water treatment monitoring and aggressive process chemical applications. Ideally suited for applications in which 4-20mA signals are required and reliable performance is critical. The unit features isolated outputs with user-programmable temperature compensation. Durable construction with enclosure rated at NEMA 4X (IP65). Simple installation for wall, pipe, panel, or rail mounting. Use with TCS3020 Toroidal Conductivity Sensor for online conductivity monitoring with minimal maintenance.
    • Reliable process monitoring: Monitor conductivity using proven inductive measurement technology
    • Simple system integration: Loop-powered (16-35V DC) with isolated 4-20mA output signal
    • Perfect for use in all environments: LCD display with NEMA 4X, IP65 enclosure
    • For use with toroidal conductivity sensors: Online conductivity measurement with minimal maintenance
    • One year limited warranty: We stand behind all our products with the Sensorex Guarantee
    *Note: If you require local display, choose the SensoPRO Toroidal Conductivity Monitoring System or the TCSTX Toroidal Conductivity Transmitter with Graphical Display.
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  • Ideal for Light Industrial Process Applications
    • Keyed flange ensures proper orientation for best results
    • Temperature compensation ensures optimal performance
    Reduce Maintenance Costs
    • Quick-disconnect cable to allow for cables to remain in place
    • Flat measurement surface resists coating
    • Calibrations are even faster when used with Sensorex Electronic Modules
    Smart Sensor-Capable via Sensorex Electronic Modules (Sold Separately) 
    • Purchase with EM802-EC Module - sold separately
    • Use with S856 Cable (Option FC)
    • USB Converter for Smart Sensors (S857 - sold separately) recommended for calibration and set-up
    For first time installations, select appropriate cable length and purchase FC875/T Flow Cell separately (shown under accessories).
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  • ORP probe for measuring ORP online
    Moderately contaminated water, such as industrial source water or natural water resources, may contain chemicals and debris that damage ORP probe components. Continuous monitoring in these types of applications requires a durable and low maintenance ORP probe. Our S272 series of ORP probes feature a double junction design to protect the reference cell from contamination by sample components that interact with silver. The flat measurement surface is self-cleaning and resists breakage, for minimal maintenance.
    • Reliable performance in demanding applications
    • Extended sensor lifetime
    • Versatile design for submersion or in-line mounting
    • One year limited warranty
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  • Toroidal conductivity meter
    Our TCSTX online toroidal conductivity meter and 4-20mA transmitter is built for water treatment monitoring in aggressive chemical and coating applications. The unit features isolated outputs with user-programmable temperature compensation. Durable construction with enclosure rated at NEMA 4X (IP65). Simple installation for wall, pipe, panel, or rail mounting. Use with our TCS3020 Toroidal Conductivity Sensor for online conductivity monitoring with minimal maintenance.
    • Reliable process monitoring
    • Simple system integration
    • Perfect for use in all environments
    • For use with toroidal conductivity sensors
    • One year limited warranty
    Note: Transmitter is only compatible with sensors with tinned leads.
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  • hot tap
    Users installing into large tanks, large process lines and scrubber lines will appreciate this hot tap assembly sensor kit. Adjustable insertion depth up to 12” ensures sensor is in flow for best results. Designed in CPVC for a user friendly cost compared to expensive stainless models, the S675 assembly is well suited for most water and wastewater treatment applications. Incorporates optional automatic temperature compensation (ATC) with 1000Ω RTD. Supplied with 10 foot cable. Kit also includes (1) S656CD Flat Surface pH Cartridge. The BV-1 Ball Valve (sold separately) facilitates removal from system without need for shutdown.
    • Durable CPVC design is suitable for most applications
    • Remove sensors for cleaning and maintenance without system shutdown
    • Easy installation
    • One year limited warranty
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  • Conductivity Probe Sensor
    Used for Laboratory and Light Industrial Applications: Cell constants are made from graphite to provide good performance for the value. Configurable to Meet Your Exact Needs: 
    • Select from our options below for a quick delivery or fill out the contact us form at the bottom for a custom product!
    • Choose your cell constant, temperature compensation, cable lengths, and connectors
    Multiple Use Cases
    • Submerge in a tank or mount in-line in a pipe.
    • Compatible with Sensorex's CM1000 and most portable/bench-top meters
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  • conductivity transmitter
    Our CX100 is an isolated output 4-20mA industrial transmitter for reading contacting conductivity sensors. Easily power the unit with available two-wire power supply loop. Ideal for connecting to a PLC for advanced control systems. Versatile mounting options for wall or panel mount.
    • Facilitates easy sensor maintenance with output 'HOLD' function
    • Accurate conductivity / TDS measurements
    • Flexible configurations with 6 selectable conductivity ranges
    • Compatible with a wide variety of contacting conductivity sensors
    • One year limited warranty
    Note: Transmitter is only compatible with sensors with tinned leads and Pt100 RTD temperature compensation. Consider our new CX105 as a great alternative to the CX100.
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  • Replacement ORP Sensor
    Our S8000 series of ORP deliver the most reliable online ORP monitoring in a unique, modular package that minimizes total cost of ownership. These sensor cartridges can be changed in a few seconds with no tools or re-wiring required. Extended sensor lifetime with ERP Reference System.
    • Reliable performance in demanding applications
    • Lightning fast sensor changes with no tools required
    • Extended sensor lifetime
    • All mounting hardware is reuseable. Only replace the quick-change sensor cartridge
    • One year limited warranty
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