Sensorex ORP Measurement
Oxidation reduction potential (ORP), also known as REDOX, is a measurement that reflects the ability of a molecule to oxidize or reduce another molecule:
- Oxidation is the loss of electrons, so oxidizers accept electrons from other molecules
- Reduction is the gain of electrons, so reducers donate electrons to other molecules
Oxidation reduction potential is measured as a single voltage in millivolts (mV). Oxidizers have a positive ORP value, while reducers have a negative ORP value.
ORP is measured using an electrochemical sensor called an ORP or REDOX sensor. Similar to to pH sensors, the most common type of ORP sensor is a combination sensor with a measuring electrode and a reference electrode. The measuring cell, typically a noble metal like platinum or gold, detects changes in REDOX potential, while the reference provides a stable comparison signal.
Like a pH measurement, an ORP measurement is not a direct indicator of concentration, but rather an indicator of activity. However, in solutions with one active species, like pool water containing chlorine, ORP correlates to concentration.
S8000CD-ORP
ORP Sensor Cartridge for S8000 Series Kits, Quick Change
Our S8000 series of ORP deliver the most reliable online ORP monitoring in a unique, modular package that minimizes total cost of ownership. These replacement ORP 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: Liquid flow naturally cleans the flat ORP measurement surface
- Lightning fast sensor changes: Modular design allows replacement cartridges to be changed in seconds without tools
- Extended sensor lifetime: ERP Reference System for reference protection against contamination
- Low total cost of ownership: All mounting hardware is reuseable. Only replace the quick-change sensor cartridge
- One year limited warranty
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: Liquid flow naturally cleans the flat ORP measurement surface
- 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
S8100
Process ORP Sensor, Submersion
The S8000 series ORP sensors deliver the most reliable online ORP monitoring in a unique, modular package that minimizes total cost of ownership. CThis submersion ORP sensor 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: Liquid flow naturally cleans the flat ORP measurement surface
- 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
S272CD-ORP
ORP Sensor, Online Process
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 industrial 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. The durable Ryton body allows testing in a range of chemical environments up to 100⁰C.
- Reliable performance in demanding applications: Liquid flow naturally cleans the flat ORP measurement surface
- Extended sensor lifetime: Double junction technology extends sensor lifetime by preventing reference contamination
- Versatile design for many applications: 3/4″ NPT threads on both ends for submersion or in-line mounting
- One year limited warranty
S272CD-ORP-MA and S272CD-ORP-MB
Smart ORP Sensors, Online Process
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 industrial 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. The durable Ryton body allows testing in a range of chemical environments up to 100⁰C.
- Reliable performance in demanding applications: Liquid flow naturally cleans the flat ORP measurement surface
- Extended sensor lifetime: Double junction technology extends sensor lifetime by preventing reference contamination
- Output Options include: Millivolt, 4-20mA or MODBUS/RS485 output
- Input Voltage Options: 24V DC
- Versatile design for many applications: 3/4″ NPT threads on both ends for submersion or in-line mounting
- One year limited warranty
SD7000CD-ORP
Differential ORP Sensor, 5-Wire Online Process
The 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
* Hach is a registered trademark of Danaher. No affiliation, endorsement or sponsorship is stated or implied.
SD7420CD-ORP
Differential ORP Probe with Direct 4-20mA Output
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.
- Reliable measurement performance: True differential measurement technology using solution ground
- High accuracy measurements: Differential measurement technique virtually eliminates ground loop measurement error
- No transmitter or controller required: Direct 4-20mA output for simple integration
- Resists aggressive chemicals: Constructed of durable Ryton® Polyphenylene Sulfide (PPS)
- Two year limited warranty
SD7500CD-ORP
Differential ORP Probe, Universal
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.
- Designed for tough applications: True differential measurement technology using solution ground
- Extended sensor lifetime: Buffered electrolyte reference solution resists fouling
- High accuracy measurements: Differential measurements virtually eliminate ground loop measurement error
- Use with any transmitter or controller: Self-powered unit is compatible with any conventional ORP transmitter
- Resists aggressive chemicals: Constructed of durable Ryton® Polyphenylene Sulfide (PPS)
- Two Year Limited Warranty
ORP2000
ORP Sensor, Extended Life
When measuring samples such as wastewaster that may contain proteins, heavy metals, or other contaminants, it is important to use an ORP sensor (REDOX sensor) designed to withstand unpredictable chemical environments. The ORP2000 features double junction reference protection, which prevents contamination by sample components that interact with silver (Ag). The durable Ultem® body ensures extensive chemical compatibility, making the ORP2000 a highly versatile analytical tool.
- Virtually unbreakable with durable Ultem® body construction and recessed protected glass
- Reliable and accurate ORP / REDOX measurements
- No refilling or maintenance required with sealed gel-filled design
- Instantly ready for use and shipped in storage bottle for long shelf life – guaranteed for one year
- One year limited warranty
S651CD-ORP
ORP Electrode, Submersible, Flat-Surface
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
S660CD-ORP
ORP Sensor, for 600 series assemblies
S465C-ORP
ORP (REDOX) Sensor, Extended Life Acu-Trol Direct-Fit Replacement
THE S465 series of ORP sensors deliver reliable online ORP (REDOX) monitoring as a direct-fit replacement for the Acu-Trol ORP sensor 744000330 (AKORP-FB) platinum or 744000390 (AKORG-FB) gold ORP sensors. An extended lifetime sensor 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: Durable PPS constructed for reliable online performance
- Direct-fit Compatibility: Replacement sensor for several popular Acu-Trol® models
- Perfect for pressurized applications: Sealed, no maintenance reference design
- Instantly ready for use: Shipped in storage bottle for a long shelf life – guaranteed for one year
- One year limited warranty
* Acu-Trol is a registered trademark of Pentair. No affiliation, endorsement or sponsorship is stated or implied.
S420C-ORP/BTD
ORP (REDOX) Sensor, Extended Life Strantrol Direct-Fit Replacement
THE S420 series of ORP sensors deliver reliable online ORP (REDOX) monitoring as a direct-fit replacement for Strantrol ORP sensors 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: Durable CPVC construction for reliable online performance
- Direct-fit Compatibility: Replacement sensor for several popular Strantol models
- Perfect for pressurized applications: Sealed, no maintenance reference design
- Instantly ready for use: Shipped in storage bottle for long shelf life – guaranteed for one year
- One year limited warranty
* Strantrol is a registered trademark of Evoqua Water Technologies LLC. No affiliation, endorsement or sponsorship is stated or implied.
