The Fisher® 4320 wireless position monitor is a linkage-less device that provides accurate position feedback. The 4320 monitor uses industry standard WirelessHART™ communications. Most process plants have hundreds, or even thousands of valves that are not connected to the control system because of high wiring costs. These valves currently provide no feedback on their actual positions, even though incorrectly positioned valves represent a significant cause of safety-related incidents. Unfortunately, users have typically not been able to access the position data that is valuable to the performance and safety of their plant. The Fisher 4320 wireless position monitor changes the economics since it represents only 10% to 20% of the installed cost of a wired solution. The wireless monitor installs and commissions quickly, providing users with a cost-effective way to access the information. The unit monitors equipment such as valves, regulators, louvers, displacement and float level sensors, and relief valves in standard and hazardous area locations. With its patented non-contacting rotary and linear monitoring, the 4320 is adaptable to almost anything where a percent of span is desired.