The NW Narrow Web Tension Transducer
is a specialized bearing-mounted cantilevered idler roll with integrated dual tension sensors for measuring tension in a moving narrow web of paper, film, foil or other material.
Constructed of stainless steel and aluminum for excellent corrosion resistance, the NW transducer can be used as the sensing mechanism in a web tension control
or display system in a continuous label, tag, or tape process. It mounts on a single-sided machine frame in the path with the cantilevered idler rolls.
Precision-balanced sensing elements fixed internally at each end of the idler roll deliver a highly accurate tension signal. This arrangement is functionally the same as wide web tension
measuring schemes, using two tension transducers and a separate idler
roll. The sensing elements measure total web tension accurately regardless
of web position on the roll, and regardless of which edge of the web is
The Narrow Web transducer is available in three roll diameters: NW size 0 is 2.25 inches (57 mm); NW size 1 is 3 inches (76 mm); and the NW size 2 is 3.5 inches (89 mm).
An option of the Narrow Web size 2 tension transducer is a built-in, digital,
LED tension display at the end of the roll.
The base of the NW roll bolts
onto the cantilevered frame of a press or machine at a desired point in
the web path and reads out running tension on the LED display at the outside end during operation.
For a machine operator, who must make control adjustments when web tension
runs outside acceptable limits, the direct on-roll tension display is
convenient and easy-to-read.
The Narrow Web tension transducer is covered
by DFE's Tension-Free 5-YEAR PRODUCT WARRANTY.
Tension Transducer Capabilities
Measures actual web tension
Promotes improved product quality and reduces
Does not affect the web. No steering effect, web
breakage or length change