Product category:
Liquid Analysis: pH, Conductivity, ISE
News Release from: Emerson Process Management | Subject: Rosemount Analytical 410VP
Edited by the Processingtalk Editorial
Team on 05 December 2007
Four-electrode hygienic conductivity
sensor
The Rosemount Analytical PUR-Sense 410VP conductivity sensor is an easy to install four-electrode contacting sensor designed for sanitary applications in the food, beverage and life science industries
This new Rosemount Analytical sensor from Emerson is manufactured from FDA compliant materials, meets 3A and EHEDG hygienic standards, and is available with a range of sanitary process connections The Model 410VP PUR-Sense sensor offers the industry's widest conductivity measurement range, providing exceptional linearity between 0.1microSiemen/cm to 600milliSiemen/cm
This article was originally published on Processingtalk on 30 Dec 2002 at 8.00am (UK)
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Typical applications for the Model 410VP include monitoring the concentration of high conductivity fluids such as clean-in-place solvents and low conductivity rinses.
It can also be used for monitoring eluents in chromatographic separations, and for the detection of liquid interfaces, all with the same sensor.
The Model 410VP is compatible with the Model 1056 Rosemount Analytical Intelligent Analyser.
An alternating current is injected through the outer electrodes and the analyser measures the voltage across the inner electrodes.
During operation, the current is continuously altered to keep the voltage constant.
Thus, the injected current is directly proportional to the conductivity of the solution.
Because the voltage measuring circuit draws almost no current, series capacitance and cable resistance, which cause considerable error in two-electrode measurements at high conductivity, are essentially eliminated.
Electrolytic conductivity readings are typically corrected for temperature.
The Model 410VP uses an integrated Pt1000 RTD that makes contact with the process liquid through a stainless steel capsule flush with the sensing face, so temperature response is fast.
The Model 410VP is designed for fast, easy, and trouble free start-up.
It has an accurate factory-determined calibration constant, which eliminates the need for troublesome calibrations against liquid standards and ensures maximum accuracy.
It is available with four sanitary connections; 1.5inch tri-clamp, 2inch tri-clamp, Ingold G1-1/4, or Varivent Process Connection.
All wetted plastics and elastomers (G 1-1/4 version only) are compliant with 21CFR177, and all wetted surfaces have a 16microinch (0.4micrometer) Ra finish. Request a free brochure from Emerson Process Management ...
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