Product category:
Gas, Chemical, Radiation and Magnetic Sensors
News Release from: Emerson Process Management - Rosemount Analytical | Subject: Model 225 Toroidal Conductivity sensor
Edited by the Engineeringtalk Editorial
Team on 27 June 2001
CIP monitor unaffected by hot caustic
solutions
The new Model 225 Toroidal Conductivity sensor from Rosemount Analytical is a major step forward in checking CIP cleaning procedures in pharmaceutical and food industry applications.
The new Model 225 Toroidal Conductivity sensor from Rosemount Analytical is a major step forward in checking CIP cleaning procedures in pharmaceutical and food industry applications Conductivity sensors are needed on skids and plant pipe-work to monitor Clean-In-Place (CIP) operations
This article was originally published on Engineeringtalk on 12 Mar 2001 at 8.00am (UK)
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The measurements taken are used to control the strength of the cleaning solution, and determine the end-point of the cleaning process, when the caustic or acid solutions have been totally rinsed away.
In contrast to previous sensors offered for this duty, the "Unfilled" PEEK used for the body of the Model 225 sensor is unaffected by any of the hot caustic solutions used: in addition the material is FDA approved.
The Rosemount Model 225 is a toroidal sensor, containing a pair of wire wound coils that are completely isolated from the process, one used as a transmitter, and the other as an inductive receiver.
The liquid conductivity is measured by the coil signals, without having any metallic electrodes in contact with the process liquids, so avoiding all crevices and seals in the construction.
Using a 2" Tri-clamp fitting, the design meets sanitary standards and has achieved 3A approval.
Conductivity ranges measured with this sensor can be as low as 0-50 microSiemens/cm: the measurement is not sensitive to liquid flow rate, or direction.
Two separate sensors can be monitored economically using the new Rosemount Analytical 1055 dual channel analyser, which provides digital display of both measurements, plus analogue outputs and relay contacts at programmable trip levels.
The 1055 Analyser uses the integral RTD built into the Model 225 sensor to temperature compensate the conductivity measurement, allowing the sensors to measure accurately up to 130øC.
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