Differential pH/ORP Sensors use 3 electrodes for max accuracy.

Press Release Summary:

Available for industrial and municipal water treatment operators, SD7000CD and SD7000CD-ORP offer chemically-resistant direct replacement options for Hach®/GLI and Water Analytics/Aquametrix analog 5-wire pH and ORP sensor models. Solution pH is measured differentially with process and inner reference (surrounded by known concentrated pH 7 buffer) electrodes compared to third ground electrode. This minimizes reference junction potential and eliminates sensor ground loop effects.

Original Press Release:

Sensorex Differential pH/ORP Sensor - Direct Replacement Series

SD7000 Series pH/ORP Differential Sensors from Sensorex suited to water, wastewater, environmental scrubber and other challenging process applications

Garden Grove, California – Sensorex’s new SD7000 Series Differential pH/ORP sensors provide industrial and municipal water treatment operators with a unique, yet proven sensor technology, with overall low cost of ownership. The SD7000CD and SD7000CD-ORP are a cost-effective and chemically-resistant direct replacement option for Hach/GLI and Water Analytics/Aquametrix analog 5-wire pH and ORP sensor models. These differential pH and ORP sensors are ideally 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 are highly accurate, with three electrodes instead of the two found in conventional combination pH and ORP sensors. Solution pH is measured differentially with process and inner reference (surrounded by a known concentrated pH 7 buffer) electrodes, compared to a third ground electrode. This provides optimal measurement accuracy, minimizes reference junction potential, and eliminates sensor ground loop effects. Less maintenance for operators, minimized down time, longer sensor life and overall greater reliability are hallmarks of this differential sensor design.

SD7000 Series sensors offer unmatched accuracy and reliability with 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 outstanding 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 means of a field-replaceable double junction salt bridge which reduces the possibility of contamination. The salt bridge and standard pH 7 cell solution can be replaced periodically at a very low cost, making the SD7000 differential sensor very economical to maintain.

To learn more about the SD7000 Series Differential pH/ORP Sensors, visit www.Sensorex.com, email sales@sensorex.com or phone +1 714-895-4344.

*Hach is a registered trademark of the Hach Company. Aquametrix is a product of Water Analytics Inc. No affiliation, endorsement or sponsorship is stated or implied.

A high resolution file of the photo above may be downloaded from:


Visit Sensorex's online news archive at: http://halmapr.com/news/sensorex/.

About Sensorex:

Since 1972, Sensorex has been a global leader in the design and manufacture of quality electrodes and sensors for water quality and process applications. Sensorex has been approved and certified by NSF International to the ISO 9001:2008 standard for the design and manufacturing of laboratory and industrial analytical sensors for aqueous solutions. The company offers more than 2000 sensor packages for pH, ORP, conductivity, dissolved oxygen, free chlorine, chlorine dioxide, UV transmittance and other specialty measurements, as well as a full line of sensor accessories and online transmitters. Its expert technical support engineers solve analytical sensor challenges with custom OEM designs and off the shelf products. Headquartered in California, with a global distributor network, Sensorex is a subsidiary of Halma plc, an international market leader in safety, health and sensor technology.

Follow Sensorex on:    

Follow Sensorex on Twitter      

Follow Sensorex on YouTube      

Follow Sensorex on Facebook      

A Halma Company

Company Contact:


11751 Markon Drive

Garden Grove, CA 92841 USA

Tel: +1.714.895.4344

Fax: +1.714.894.4839

Email: sales@sensorex.com

Website: www.sensorex.com

Press Contact:

Halma Holdings PR Services

Lisa Wallner

11500 Northlake Drive

Suite 306

Cincinnati, OH 45249

Tel: +1 513.326.8045

Fax: +1 513.772.5507

Email: lisa.wallner@halma.com

Website: www.halmapr.com

Halma PR Profile:

Halma PR Services provides a range of media relations services to support Halma plc subsidiaries. Halma subsidiaries operate world-wide and make products for hazard detection and life protection.

Follow Halma PR on:     

Follow Halma PR on Twitter      

Follow Halma PR on LinkedIn      

Follow Halma PR by RSS

More from Computer Hardware & Peripherals

All Topics

COVID-19 Response Suppliers COVID-19 Response:
Can Your Company Help Provide Critical Supplies?

We are using the power of our platform to aid in the mass shortage of critical supplies. If your company can help provide supplies, capabilities, or materials for products such as N-95 Masks and Tyvek SuitsPlease let us know.

COVID-19 Response Suppliers