Wireless corrosion monitoring transmitter
Pepperl+Fuchs CorrTran MV corrosion detection transmitters are now available with wireless output. The company says that these devices, known for their ability to deliver multivariable outputs, can now deliver that information wirelessly via the WirelessHART protocol. This functionality enables users to determine the effectiveness of corrosion inhibitors and keep tabs on potential maintenance issues before they become a costly problem.
" CorrTran MV is field-proven technology that takes corrosion evaluation out of the laboratory and brings it into everyday process control. Now it takes this success to a new level with a simple, easy-to-use two-wire transmitter operating on the industry standard 4-20 mA control basis and easily integrated HART protocol," says Kristen Barbour, Pepperl+Fuchs product marketing manager.
CorrTran MV transmitters use a new algorithm of the LPR (linear polarization resistance), HDA (harmonic distortion analysis), and ECN (electro-chemical noise) measurement for maximum corrosion monitoring accuracy. They also automatically calculate and update the Stern-Geary value (B-value) due to changes in other process variables to maintain maximum accuracy. At the completion of each measurement cycle, the respective corrosion rate and pitting value is calculated and made available to the plant personnel in the form of a 4-20 mA signal.
The transmitters can be located in general purpose, intrinsically safe, explosion/flame proof and Class I, Division 2 hazardous locations, and are suitable for direct or remote mounting. New models feature the same design and dimensions as earlier versions, and can be retrofitted to older units.
-Edited by Peter Welander, process industries editor, PWelander@cfemedia.com
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