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

$ 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.