Glass-free pH Sensors With Improved CIP Stability

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Unbreakable PEEK sensors for safety and accuracy

Measurement & Instrumentation

Unbreakable pH Sensor CPS77D
Unbreakable pH Sensor CPS77D

ISFET pH sensors from Endress + Hauser can be used in any applications where glass PH sensors are not desirable due to challenging process conditions or risk of breakage. The use of glass sensors is avoided especially in applications in the food and beverages or life sciences industries, since entire production batches could become contaminated in the event of glass breakage. The ISFET sensors made of unbreakable PEEK are available with three different reference systems, which means that there are glass-free sensors for different requirements. 

Certified hygienic design 

The new ISFET sensors, Memosens CPS47D and CPS77D, are perfectly equipped to meet the strict demands of hygienic applications. Thanks to their new design with an increased chip surface, they are even easier to clean than their predecessors. They deliver stable and reproducible measured values, even after sterilization and autoclaving up to temperatures of 135°C, come with all the usual hygiene approvals for the food and life sciences industries, such as USP, EHEDG and 3A, and are TSE-/BSE-free. They can outlast at least 25 CIP cycles and have therefore significantly improved CIP stability compared to conventional ISFET sensors. In addition, the Memosens CPS77D offers maximum bacteria tightness thanks to its microporous ceramic diaphragm.

Fast response time—even at low temperatures 

Chemical processes at low temperatures and where there is a high proportion of organic solvents or solids, pose specific challenges for pH measurement. Even at low temperatures, ISFET sensors such as the Memosens CPS97D have a fast response time and are chemically stable thanks to their PEEK stem. Also, their open diaphragm means that they do not become clogged even in the case of high solids concentrations. The firm gel used in the reference is also extremely resistant to chemicals.

Easy handling, high level of process safety 

The digital ISFET sensors with Memosens technology store calibration, sensor and process data. A significant increase in process safety can be achieved through combining the Liquiline platform with efficient sensor management by Memosens Plus software. Using Memobase Plus software, the sensors can be calibrated and regenerated under optimum conditions in a lab. This not only increases the operating life of the sensors, but also makes commissioning and maintenance considerably easier and reduces process downtime to a minimum. The stored data can also be used for predictive maintenance and process optimization.
 

Posted on January 3, 2020 - (1504 views)
Endress + Hauser Instruments International AG
Kägenstrasse 2
4153 Reinach - Switzerland
+41-61-7157761
+41-61-7157762
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