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  • 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
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  • portable uv transmittance
    Our UVT-LED-H Handheld UV Transmittance Monitor is ergonomic, lightweight, and simple to use. Obtain incredibly accurate UV Transmittance data on water samples with easy one-button operation.  The UVT-LED-H features high performance LED technology for up to 5x longer lifetime, easy to read backlit LCD to instantly display measurements, and integrated rechargeable Nickel Cadmium battery, all in one of the most compact packages of any UV Transmittance sensor available.
    • Stable measurements driven by high-performance UV-C LED technology
    • Ergonomic, lightweight and portable
    • No warm up time, no disposable cuvettes, and no replacement lamps
    • Take up to 350 measurements on a single battery charge
    • Quick and easy calibration with DI water
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  • 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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  • optical dissolved oxygen sensor

    Now Available with MODBUS/RS485 Interface & optional Titanium body

    The Lumin-S optical dissolved oxygen sensor delivers reliable DO measurements over a long operating life. There are no membranes to replace, no electrolyte solutions to replenish, and no anodes to clean. Maintaining the sensor is as easy as replacing the optical sensing cap once every 1-2 years, and since all calibration data is stored on the cap, there’s no need to calibrate. This dissolved oxygen sensor outputs a Modbus/RS-485 digital signal for easy PLC integration.
    • Reliable measurements: Optical sensor technology delivers accurate DO monitoring with no drift and no minimum flow
    • Long operating life with minimal maintenance: No membranes, electrolyte solutions, or anodes - just replace the cap once every 1-2 years
    • No calibration: All calibration data is stored on the cap for quick and easy startup
    • Simple system integration: Use Modbus/RS-485 to integrate with a PLC or other control system
    • One year limited warranty: We stand behind all our products with the Sensorex Guarantee
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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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  • 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:
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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)
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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.
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  • free chlorine sensor

    Now Available with optional MODBUS/RS485 Interface

    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 analog or MODBUS/RS485 digital output, the FCL sensors can be used with any PLC or SCADA.
    • Direct free chlorine measurement in parts per million (ppm)
    • No reagents requried
    • Direct 4-20mA output or optional MODBUS/RS485
    Recommended accessories:
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  • chlorine dioxide sensor
    Our dependable chlorine dioxide sensor features amperometric measurement technology. Designed for use in disinfection applications. Sensor directly outputs a 4-20mA signal for easy control system integration. Maximize sensor lifetime by easily replacing membrane cap and fill solution (FCLA-5018). Use with FC72 Flow Cell is highly recommended. An optional flow meter (FM001 Flow Regulator) is available to provide consistent flow for added system stability.
    • Reliable amperometric sensor technology
    • Real time continuous measurement
    • Integrated automatic temperature compensation
    • Maximum sensor lifetime
    • One year limited warranty
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  • 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.
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  • 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
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  • 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
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  • 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
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  • 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
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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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  • Dissolved Oxygen Sensor

    Now Available with optional MODBUS/RS485 Interface

    Our DO6400 series of galvanic dissolved oxygen sensors deliver accurate measurements with very fast response time. Calibration is simple and only requires a single-point air calibration. Sensor directly outputs Millivolt, 4-20mA analog or MODBUS/RS485 digital signal scaled to the sensor range for easy PLC integration.
    • Fast response time for accurate dissolved oxygen monitoring
    • Direct MilliVolt, 4-20mA analog or MODBUS/RS485 digital output signal to integrate with a PLC or other control system
    • Input Voltage Options:
      • 12V DC – MODBUS only
      • 24V DC – 4-20mA & MODBUS
    • Ready for long-term deployment with large electrolyte reservoir
    • One year limited warranty
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  • 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
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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
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  • 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
     
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  • 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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  • Our CX105 conductivity transmitter is an isolated output 4-20mA industrial transmitter for reading contacting conductivity sensors. The CX105 transmitter also measures Resistivity and TDS. Easily power the unit with available two-wire power supply loop. This transmitter is ideal for connecting to a PLC for advanced control systems. The CX105 has versatile mounting options for wall or panel mount. With a dual display LCD, monitoring both the measuring value and the temperature is simple.
    • Dual display shows the measuring value and temperature
    • Compatible with a wide variety of contacting conductivity, resistivity, and TDS sensors
    • One year limited warranty
    • CE certified - compliant with European Community Standards
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  • TDS measurement kit
    The new SensoLab Series TDS Measurement Kit includes everything you need to start measuring conductivity or total dissolved solids for research, plant cultivation, hydroponics, aquaculture, and other applications. Includes our CM1000 benchtop conductivity meter with a fully compatible TDS sensor and built in temperature probe. Intelligent auto ranging selects the best measurement scale based on each sample, eliminating the guesswork.
    • Complete kit ready for TDS monitoring
    • Auto ranging for ease of use
    • Optional electrode stand
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  • pH measurement kit
    The new SensoLab Series benchtop pH Meter package is the perfect solution for a range of applications from instructional chemistry laboratories to quality control testing. Our ready-to-use kit contains everything you need to get an experiment started: Our waterproof pH and ORP meter helpfully prompts you through the calibration and measurement procedures, and our color-coded 7.00, 4.01, and 10.01 pH buffer solutions ensure accurate calibration every time. The meter also includes the optional AUTOLOCK feature to ensure repeatable and reliable pH and mV measurements. This versatile meter can be powered in two ways, either with 6 AAA batteries to save your valuable bench space or with an AC power cable.
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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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  • 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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  • 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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  • 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.
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  • Resistant to Corrosion, Coating, and Fouling
    • Noryl body provides wide solvent tolerance and is stable up to 105° C
    • Robust single-body design
    Wide Measurement Range
    • Measures conductivity from 0 - 2,000,000 uS
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  • 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
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  • 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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  • 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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  • 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:
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  • pH Detector
    The pH Detectors are designed for use with a variety of instrumental techniques such as FIA, HPLC and IEF and are also used to continuously monitor the pH of low volume flows in bench scale chemical systems. The pH detector system is specially designed to achieve ultra fast response times. A flat surface pH electrode (S450CD) located at the top of the flow cavity allows for very low internal volumes. The resulting rectangular cross-section flow path has no protruding parts which could interfere with a clean sweeping flow.
    • pH Detector system for HPLC, FIA, and IEF applications
    • Perfect for low volume flow measurements
    • Ultra fast response time
    • Flow cell and inlet/outlet fittings included
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  • tds meter
    The new SensoLab Series Benchtop Total Dissolved Solids Meter is an easy to use benchtop meter for analyzing conductivity or total dissolved solids in laboratory samples. Monitor data from conductivity sensors in research, hydroponics and greenhouses, aquariums and aquaculture, and more. Ready to use right away, our TDS meter quickly prompts users through the calibration process. Suitable for measurement in a wide range of sample types, the SensoLab Total Dissovled Solids Meter is compatible with sensors across 4 cell constants. With intelligent auto-ranging, the meter automatically selects the best units of conductivity based on the sample type being measured. No experience required.
    • Compatible with Sensorex CS150 conductivity sensors
    • Auto ranging for ease of use
    • Suitable for a range of sample types, cell constants
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  • High Accuracy and Repeatability
    • Accuracy is 2% of reading with 1% repeatability*
    • Electro-polish finish provides excellent stability and consistency
    Multiple Cell Constants Cover Wide Range of Applications
    • 0.01/cm for ultra-pure/pure water
    • 0.1/cm for pure and drinking water
    • 1.0/cm for wastewater and process water
    Durable in High-Temperature and High-Pressure Environments
    • Built from 316 Stainless Steel and Teflon
    • Withstands up to 150° C (302° F) and 1379 KPA (200 PSIG)
    CA ResidentsProp 65 WARNING(S) *Accuracy and repeatability of the sensor depends on the accuracy of the calibrating electronics
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  • 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.
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  • Ideal for Sanitary Installation
    • 1.5” and 2” tri-clamp options
    • Made from 316 Stainless Steel
    Accurate Measurements
    • Select from three cell constants based on your measurement range
    • Use temperature compensation for best performance
    Designed to Withstand CIP and Steam Sterilization Process
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  • Pipe mount kit
    The LPMA-002 is an accessory kit that allows pipe-mounting of the LPM100 loop-powered display meter. The LPM100 is a durable, loop-powered process meter for use in demanding applications. This rugged, large display meter can be mounted in various configurations and endure harsh environmental conditions. Simple installation and operation make it an ideal solution for process read out monitoring.
    • Durable for harsh environmental conditions
    • Simple set up and operation
    • User-friendly interface
    • Compatible with Sensorex 4-20mA output sensors
    • One year limited warranty
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  • Hot Tap Insertion
    Users installing into large tanks, large process lines and scrubber lines will appreciate this hot tap assembly to simplify installation. 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. Designed for use with our S656CD Flat Surface pH Cartridge and BV-1 Ball Valve to facilitate 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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  • 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:
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  • 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
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  • Free Chlorine Flow Cell
    Our FC72 flow cell facilitates high-accuracy measurements of free chlorine and chlorine dioxide by preventing air bubble formation on the sensor membrane while maintaining laminar flow across the membrane. Compatible with FCL Series Free Chlorine Sensors and CLD Series Chlorine Dioxide Sensors.
    • Facilitates high-accuracy measurements
    • Simple Sensor Installation
    • For use with Sensorex FCL Series Free Chlorine and CLD Series Chlorine Dioxide Sensors
    • One year limited warranty
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  • 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.
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  • 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.
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  • Sensorex manufactures a quality line of industrial grade conductivity electrodes for use in high temperature boiler control. Sensorex boiler conductivity sensors are constructed from stainless steel bodies and pins (316SS), PEEK insulators and perfluoro elastomer o-rings. These boiler conductivity sensors have 2 each 3/4" male NPT threads. Two models are available. One model incorporates ATC elements (Pt1000Ω RTD or PT100 RTD) and the other does not. Model CS875HTTC includes temperature element while the CS875HT does not, depending upon your application requirements. The CS875HT and CS875HTTC feature a 1" insertion depth beyond the 3/4" MNPT mounting threads. All Sensorex boiler probes are supplied with 6" PTFE coated leads for integral mounting to a Forged Steel Junction Box/ Conduit connection and extension(customer supplied). Cell k value of 1.0 is standard.
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  • benchtop pH meter
    The new SensoLab Series Benchtop pH/ORP Meter is the perfect solution for a range of applications from instructional chemistry laboratories to quality control testing. Our waterproof pH and ORP meter helpfully prompts you through the calibration and measurement procedures, and includes the optional AUTOLOCK feature to ensure repeatable and reliable pH and mV measurements. This versatile meter can be powered in two ways, either with 6 AAA batteries to save your valuable bench space or with an AC power cable. Use with any of our Laboratory pH Eletrodes or ORP Sensors. Or you can check out our SensoLab pH Meter Kit for a complete pH measuring solution.
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  • 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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  • General-Purpose Sensor for Use in a Variety of Applications
    • Cooling Towers
    • Demin Influent
    Robust Single-Body Design
    • 1/2” NPT Stainless Steel
    • Hexagonal body shape for ease of installation
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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.
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