Corrosion Testing and Research


Sensors and Corrosion Monitoring
Corrosion—Time of Wetness Sensors


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Corrosion—Time of Wetness Sensors

Mobile Sensors for Gas Pipeline

Multielectrode Array Sensor (MAS™)

Coating Degradation Sensor (CDS)

Anodes for Cathodic Protection

Subsea Pipeline Pads

Two critical parameters that influence corrosion of engineered structures are the time of wetness where the structure is immersed or covered by an aqueous film and the corrosive character of the environment in contact with the structure.

  image of thin film design with multiple substrates and materials   image of atmospheric monitoring using the time of wetness sensor

Thin film design with multiple substrates and materials


Atmospheric monitoring using the time of wetness sensor


Corrosion Sensors

Engineers at Southwest Research Institute (SwRI) have developed sensors that are suited to detect and characterize the presence of a conductive electrolyte.

  • Sensors can be tailored to measure the presence of moisture such as precipitation, condensation or splash, which forms a conductive path between the sensor elements

  • By controlling electrode compensation, the corrosive nature of the environment can be characterized

  • The time of wetness can be determined by integrating the measured output

  • Various sensor element sizes can be produced

image of sensor output vs solution composition   image of sensor output vs solution composition

Sensor output vs. solution composition


For more information about sensors and corrosion monitoring, or how you can contract with SwRI, please contact Leonardo Caseres at or (210) 522-5538, or James F. Dante, at or (210) 522-5458.


Contact Information

Leonardo Caseres

Corrosion—Time of Wetness Sensors

(210) 522-5538

James F. Dante

(210) 522-5458

Related Terminology

corrosion research

pipeline corrosion


corrosion sensors

corrosion life prediction

stainless steel

laser Raman spectroscopy

corrosion monitoring

cathodic protection

microbiologically influenced corrosion

Related Information

Assuring the Integrity of Mechanical Systems

Corrosion Engineering, Science and Technology Journal

| Materials Engineering Department | Mechanical Engineering Division | SwRI Home |

Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 9 technical divisions.

August 07, 2014