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.

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.

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.

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.

Our S8000 series of pH sensors deliver the most reliable online pH 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 module, and custom automatic temperature compensation configurations (see S8000 Electronic Modules ). Sensors can be changed in a few seconds with no tools or re-wiring required by swapping the S8000CD 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 Below are four of our more popular options for submersion, but you can build your own custom probe from our off the shelf components. Se

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

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 reus

$ 257.84

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

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 installat

S8200-ORP – Modular In-line ORP Sensors 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.  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: Differential amplifier module for applications with ground loop issues Unity gain amplifier module  transmits sensor signal up to 1000ft

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

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

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 r

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 Wa

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

$ 315.20

Some of our laboratory ORP electrodes, including the S550C-ORP/BNC, have gotten an update! Looking for a polymer body, double junction ORP electrode for lab use? Check out the ORP2000 , which replaces the S550C-ORP in our new laboratory ORP electrode line. Want to know what else has changed? Download the Specification Sheet for Laboratory ORP Electrodes.