IRVINE, CALIF. - October 24, 2007 - Emerson Process Management introduced the Rosemount Analytical PERpH-XT 3500 high-performance pH and ORP sensor, a general-purpose pH sensor that includes advanced technologies for longer life in difficult processing applications, providing a lower total cost of ownership.
PERpH-X 3500 incorporates several design innovations for prolonged life, including improved pH glass electrode durability, increased reference electrode stability and overall mechanical design reliability, resulting in longer sensor life in challenging processes, faster response, less drift, higher accuracy, and minimized maintenance requirements.
The Model 3500 combines the high performance of the complete PERpH-X pH sensor family with the convenience of plastic-threaded connections for a wide range of mounting options, making it ideal for use in numerous industries and processing applications.
Most pH measurements fail due to fouled or poisoned electrolytes and clogged reference junctions, which are the most common reference electrode problems. The PERpH-X sensor family features an enhanced double junction electrode that excels in harsh applications, and the specially designed porous Teflon liquid junction has a large surface area to maintain a steady reference signal in dirty and fouling applications. The large surface area and high porosity also minimize junction potentials leading to accurate measurements without standardization.
The porous Teflon reference junction is easily replaced if it becomes fouled or plugged. The potassium-chloride-based reference electrolyte is a chemically inert viscous gel that is unaffected by thermal or pressure cycling. With the junction removed, the outer reference electrolyte can be recharged using a gel-filled syringe supplied in the various solutions kits available as an accessory. Replacing a clogged junction or recharging the electrolyte will rejuvenate most failed sensors. Proper preventative maintenance can dramatically extend the life of the sensor by minimizing the depletion or poisoning of the primary reference.
The available Solution Kits optimize the PERpH-X 3500 performance by keeping the porous Teflon reference from coating and the electrolyte from fouling. Six solutions are available as electrolyte kits: high-temperature; bio-film-resistant; poisoning-resistant; oil-resistant; scaling-resistant; metals-resistant. Each kit contains a treated porous Teflon reference junction and a specially formulated electrolyte to extend the life of the reference electrode in its targeted application.
In addition, the AccuGlass pH glass electrode provides exceptional resistance to thermal and caustic degradation, resulting in less breakage from thermal stress or shock and faster response rates for fast and accurate calibrations even after months of service. The PERpH-X 3500 provides near-theoretical response for pH measurement, even at extreme values, and minimal hysteresis, and is designed with a removable, slotted tip that protects the glass bulb from direct impacts while in service and during calibration. Further assuring the sensor can withstand the demanding environments present in harsh chemical processing applications, the sensor is also fitted with a molded Ryton body and EPDM, Viton or Kalrez o-rings.
The PERpH-X 3500 and 3500VP with convenient Variopol connector is currently available for order.
"As the newest member of the PERpH-X family, the new Model 3500 is designed from the ground up to provide superior performance in the most aggressive fouling applications," said John Wright, VP of marketing. "The PERpH-X 3500 brings advanced, long-life technologies previously only available in sensors designed for specialized, demanding process applications, and makes them available in an easy-to-use, general-purpose sensor that reduces total cost of ownership and plant maintenance requirements for a wide variety of industries and applications."
About Emerson Process Management
Emerson Process Management, an Emerson business, is a leader in helping businesses automate their production, processing and distribution in the chemical, oil and gas, refining, pulp and paper, power, water and wastewater treatment, food and beverage, pharmaceutical and other industries.
A division of Emerson, Rosemount Analytical includes a liquid division in Irvine, CA that designs and manufactures refractometers, analyzers, transmitters and sensors for the on-line measurement of pH, ORP, conductivity, dissolved oxygen, chlorine, ozone and turbidity. The best-in-class technology and expertise of Rosemount Analytical play a key role in Emerson's combining of superior products and technology with industry-specific engineering, consulting, project management and maintenance services. Emerson brands include PlantWeb, Rosemount, Fisher, Micro Motion, Mobrey, Daniel, DeltaV, Ovation, and AMS Suite.
About Emerson
Emerson (NYSE: EMR), based in St. Louis, is a global leader in bringing technology and engineering together to provide innovative solutions to customers through its network power, process management, industrial automation, climate technologies, and appliance and tools businesses. Sales in fiscal 2006 were $20.1 billion.
