Abstract: A portable device for weighing objects is provided in which the object being weighed is supported against gravity by a self-aligning tension spring and a supporting frame. The device utilizes an indicator which carries no substantial part of the load, but senses the position of the lower, free end of the resilient measuring means, through the use of an activator probe, self-aligned with the resilient measuring means. The device can further provide high resolution to one part in one thousand while minimizing the inherent non-linearity in the no-load portion of its spring deflection curve.

Abstract: A pressure to current transmitter has an internal fill fluid chamber separated from a process fluid by a diaphragm and backup plate. A fluid-tight seal is achieved between the backup plate and the wall of the fluid chamber by a continuous weld bead while the wall of the chamber is arranged on a flexible cantilever to accommodate differential thermal expansion between the backup plate and the chamber wall.