REFRIGERANT LEAK DETECTION SYSTEM

A leak detection system includes a sensor assembly () having a sensor housing (), a leak sensor (), and a collection housing (). The sensor housing () defines a first fluid inlet (). The leak sensor () is disposed within the sensor housing (). The leak sensor () is arranged to provide a signal indicative of a presence of the first fluid within an interior space of the transport refrigeration unit. The collection housing () is spaced apart from the sensor housing () and defines a second fluid inlet ().