A new sensor for pH/oxidation-reduction potential (ORP) measurement is said to offer an industry-leading lifespan. The 500 X sensor from ABB is engineered for demanding industrial applications where extreme process conditions typically cause conventional pH/ORP sensors to fail within hours or days as a result of  reference poisoning.

The sensor features a proprietary design that resists both poisoning and fouling and has demonstrated up to 10 times longer life than conventional sensors in trials involving extreme temperatures and pH levels, asserts electrification and automation specialist ABB.

The 500 X sensors connect to ABB's transmitters using the EZLink digital platform, providing connect-and-measure capability. The company explains that, with the recent launch of the AWT424 transmitter, users can access measurement, diagnostic and audit data, in addition to software updates and sensor information, using a smartphone and the EZLink Connect App.

The 500 X is the newest addition to the company’s range of digital and analogue pH/ORP sensors and uses a colour-coded design to simplify the selection of the most suitable pH/ORP sensor for an application.

“The new 500 X delivers the durability of our TB line [of products] with the user-benefits of digital connectivity. The robust design and digital connectivity make 500 X the ideal solution for the harshest industrial applications, ensuring users can maintain process confidence while significantly reducing operating and maintenance requirements,” said ABB global product manager: continuous water analysis measurement and analytics division Nik Siwek.

The 500 series, which comprises 500 X and 500 PRO, features durable electrodes for harsh, high performance industrial and marine use including extreme high pressure, high temperature and fouling applications.

Other sensors in the company’s range include the 100 series, comprising the 100E, 100GP, and 100 ULTRA models, which are entry-level sensors used in a variety of general applications such as drinking water, wastewater, irrigation, aquaculture, environmental monitoring and boiler corrosion control.

The 700 series is a specialty rechargeable sensor for high accuracy applications such as ultra low conductivity.