In simulated cell-culture process, the PUR-Sense 3800 exhibited sensor drift below 0.1 pH after an autoclave of 125°C for 45 minutes. Additional testing showed continued sensor life after more than 30 autoclave cycles or 50 steam cycles. Emerson has worked closely with customers to assure maximum effectiveness of the PUR-Sense in challenging pharmaceutical applications.
The reliability and stability of PUR-Sense 3800 in high heat is based upon the unique Emerson PERpH-X and AccuGlass technologies. High temperature can cause deterioration of a pH glass sensing membrane. The AccuGlass pH bulb addresses this issue and resists cracking and aging while exhibiting near theoretical response even at extreme pH values. The PUR-Sense reference electrode uses a novel silver-silver chloride-based reference electrode in combination with a new gelled potassium chloride electrolyte to provide a stable reference potential through the single proprietary ceramic reference junction.
The PUR-Sense Model 3800 provides an individual quality certification with calibration records and list of wetted materials for each sensor. The sensor is available in three different insertion lengths: 120mm, 225mm and 325mm. The 3800VP has a PT100 ohm RTD mounted inside the pH glass stem for automatic temperature compensation.
"In pharmaceutical processes, there is no such thing as too much stability," said John Wright, vice president, Emerson Process Management, Rosemount Analytical Liquid. "We have worked with our customers in this field to create new standards of stability for our sensors and we're developing customized solutions to meet individual requirements."
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, metals and mining, food and beverage, pharmaceutical and other industries. The company combines superior products and technology with industry-specific engineering, consulting, project management and maintenance services. Its brands include PlantWeb, Rosemount, Fisher, Micro Motion, 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.
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