Yokogawa introduces retractable sensor fitting
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Yokogawa product story
Edited by the Engineeringtalk editorial team
Jul 17, 2009
The Yokogawa PR10 is a retractable sensor fitting that offers a flexible approach to online liquid analytical measurements in a wide range of process industries.
The PR10 is designed for online process applications where the sensor has to be removed safely without interrupting process continuity - in anaerobic, toxic or pressurised environments.
It is equally suited to pH, ORP, conductivity, inductive conductivity and dissolved oxygen measurements.
The unit is available with a wide range of adaptors, ball valves and flanges, and the insertion depth can be adjusted to achieve optimum measurement conditions.
Total disassembly without interruption to the process is possible when the ball valve is closed, and safe retraction is possible at pressures up to 5 barG.
There is a built-in scraper for ease of maintenance.
An optional flush port makes it easy to keep pH and dissolved oxygen sensors moist and clean, and also provides access for calibration.
The PR10 will accommodate all commercially available pH electrodes with PG 13.5mm thread or DIN connections, as well as Yokogawa's SC4A conductivity and ISC40 inductive conductivity sensors (with a built-in protection cage for the latter).
For dissolved oxygen measurements, the Hamilton Visiferm, Oxyferm and Oxygold sensors can be installed.
These sensors are typically used in nitrogen blanketing applications, where the optional flush port will allow regular moisturising of the sensor to prevent the membrane from drying out.
Applications for the Yokogawa PR10 include the chemical industry, power plants, pulp and paper manufacture, water and effluent treatment, pharmaceuticals and the semiconductor industry.
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