Pepperl + Fuchs Gmbh

The University of Manchester

Karel Hladky

Denis M Poirier

Roolf Wessels

David G John

Low power corrosion measurement devices are described with improved LPR, HDA, and ECN measurement capabilities in a field transmitter for online corrosion monitoring or off-line corrosion data logging.

Corrosion measurement field device with improved LPF, HDA, and ECN capability

Low power corrosion measurement devices are described with improved signal measurement and excitation circuitry in a field transmitter for online corrosion monitoring or off-line corrosion data logging.

Self-calibrating corrosion measurement field device with improved signal measurement and excitation circuitry

Low power corrosion measurement devices are described with programmable configuration for implementing one or more advanced corrosion measurement types to provide conductivity, general corrosion, and/or localized corrosion values in a field transmitter for online corrosion monitoring or off-line corrosion data logging.

Configurable corrosion measurement field device

Surface mounting corrosion probe

In an apparatus or installation having a metal part corroding in an electrolyte contacting the part, that part is a first electrode electrically insulated from a second electrode, for example another part of the apparatus, also contacting the electrolyte. No external electrical power is applied to the electrodes/electrolyte system. The low frequency voltage between the electrodes is observed. This voltage is a low frequency noise signal. Amplitude values of the signal are measured and subjected to an averaging computation yielding data indicating the corrosion rate of the first electrode and the nature of the corrosion.

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Manchester, United Kingdom

Karel Hladky