Fuente: Wipo "Sensorization" A volatile organic compound (VOC) sensor device can comprise a sensor located in proximity to a tank vent of a storage tank, wherein the sensor can be configured to monitor flumes from the tank vent; a controller operatively coupled to the sensor, wherein the controller can be configured to receive a measured input from the sensor, wherein the measured input can be VOC measurement data of the flumes; and a wireless communication device coupled to the controller, wherein the wireless communication device can be configured to communicate with a coordinator.