Over years of development, different types of sensors were added to the iBWIM system. These sensors have to withstand the rough environmental conditions at road and railway bridges.
The sensors measure changes in strain using classical strain gauges. They are connected either by four or five wires depending on their use. Different sensors are offered for concrete and steel bridges.
Other sensors from third-party providers can be incorporated into the iBWIM system, as well as the PSPLogger.