Atmospheric corrosion sensors of two types were tested over a period of time at two locations in Baton Rouge, Louisiana. The first type was a commercially available sensor based on the principles of galvanic
corrosion. The second type of sensors utilizes thin film electrodes of selected metals and the measurements are performed by LPR and Tafel slope methods. The performance and applicability of both types of these
sensors are considered and explained.
Keywords: atmospheric corrosion, thin film sensors, outdoor tests, linear and Tafel polarization, relative humidity, atmospheric corrosion monitor.