Sensorex Introduces SD7000 Series Differential pH/ORP Sensors
New Sensorex SD7000 Series Differential pH/ORP sensors, SD7000CD and SD7000CD-ORP, are chemically resistant direct replacement options for Hach/GLI and Water Analytics/Aquametrix analog 5-wire pH and ORP sensor models. The differential pH and ORP sensors are suited for industrial and municipal wastewater treatment and neutralization, metal finishing and plating, wet fume scrubbers, chemical processing and other online water quality and process applications.
SD7000 Series sensors offer three electrodes. Solution pH is measured differentially with process and inner reference (surrounded by a known concentrated pH 7 buffer) electrodes. This provides measurement accuracy, minimizes reference junction potential and eliminates sensor ground loop effects.
SD7000 Series sensors feature an encapsulated preamp to eliminate moisture problems and allow for mounting up to 3000 feet from installed pH/ORP transmitters and remote monitoring systems. Their 1.5” NPT convertible threads are provided for sensor mounting into flow tees or adapting to a pipe for process submersion. The Ryton sensor body provides chemical resistance and the double-junction reference resists contamination to ensure measurement stability.
The internal reference electrode is electrically connected to the process solution by a field-replaceable double junction salt bridge, which reduces the possibility of contamination.