A circuit includes a gate node, and a bias circuit coupled to the gate node. The primary transformer winding is configured to be coupled to a DC power source via a DC to AC converter. A load cell measures the horizontal force applied to the load cell by the transported article. The topology of pixels and detectors presented here avoids an inconsistency in the distribution of the coefficients assigned to the pixels in the image, which appears in the formulation of the analytical iterative statistical reconstruction problem. In use, the barrier temporarily holds cables in place while a potting agent is used to permanently secure said cables within the barrier connector. A first temperature sensor measures a temperature of the first heat diffusing member, a second temperature sensor measures a temperature of the second heat diffusing member, and heat flow is calculated using these temperatures.