The need for wireless monitoring
There is a real on-going need for monitoring of valve positions (actuated or manual) in the process line. Malfunctioning of a valve can result in danger to human health and safety, affect yields, and generate environmental risks. In some industries, regulation requires constant recording of valve position. Currently, such monitoring is done through wired "Switch Boxes". Each such device requires data transmission and power cabling. Not only are these cables costly to manufacture and install, they are also one of the most frequent sources of failures in the process line, due to the fact that they are very often exposed to harsh environmental conditions. In fact, it is right here, at the field device level, where the majority of problems with wires really exist.