Wire and cable makers now have an affordable way to monitor and control tension in individual wires on rotating machines. This technology by FMS is called radio transmitted tension monitoring (RTM). An RTM system can be easily applied on most planetary or tube stranders, bunchers, twisters, or any rotating machinery.
What's the secret of the system? It sends the signals by radio transmission thus avoiding the many drawbacks of mechanisms such as slip rings (cost, wear, signal noise, installation issues, etc.) and telemetry systems (unidirectional analog data transmission, multi-positional prohibitive cost, etc.). RTM technology is also secure and stable using industry standard BlueTooth technology for signal transmission.
How does it work? The RTM System equipment packages can be configured in various ways to handle nearly any tension measurement or control task. The monitoring system is comprised of tension sensors, tension measuring amplifiers, a bus system with radio transceiver, and software. All of the components are specially designed by FMS for rotating applications (not effected by centrifugal and coriolis forces based on accelerations up to 40g). A wide range of tension sensors are available for any tension requirement, and if closed loop control is required, digital controllers are used instead of measuring amplifiers. The RTM system is powered by 24VDC and is reliable, accurate, economical, easy to operate, and virtually maintenance-free.
How about retrofitting older machines? The RTM system can easily be used with existing equipment as it bolts down in a small footprint, utilizes standard FMS load cells and amplifiers, and runs on PC software so a new PLC installation is not required to utilize the system.
What if my machine has numerous tension positions? The RTM System digitally monitors tension in real time on up to 32 individual positions and displays the values on a PC screen. The software also includes data logging for each position and records minimum and maximum values for quality assurances purposes. There is also an option available to log data based on feet or meter measurements.

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