Abstract: Apparatus to facilitate sensing a parameter of a fluid in a conduit include a tap body including a first end region and a second end region. The tap body is adapted to be secured to the wall of a conduit so that the first end region extends into the conduit and the second end region extends outside of the conduit. The tap body defines a fluid flow passage which includes an inlet located in the first end region, an inlet leg in fluid communication with the inlet, a sample zone at least partially in the second end region and in fluid communication with the inlet leg, an outlet leg in fluid communication with the sample zone and an outlet located in the first end region and in fluid communication with the outlet leg. The tap body is further adapted to be secured to a sensor device including a sensor effective in sensing at least one parameter of fluid in the sample zone. Methods for sensing a parameter of a fluid in a conduit are also provided.