Q: Does DFE make tension transducers that can be used in a
A: Yes, we do.
In specifying transducers for use
in a vacuum application we'll ask for additional application information. We'll
need to know what model tension transducers are desired, the level of vacuum
under which the transducers will operate, and the specific process that they'll
be used for.
Because of out gassing and air entrapment within a
transducer under vacuum, we can't simply install a standard transducer into a
vacuum chamber. Each of the fasteners used in the transducers must be modified
to allow evacuation of the air within the cavity. Any lubricants used in the
transducer bearings must be prescribed for use in a vacuum. All connectors and
cabling must be compatible with vacuum use, and the standard RTV coating that
DFE uses on the transducers must be left out of the process.
We must also know what temperatures the transducers will be
exposed to in the chamber. In some cases the transducers may need to be moved
to another roller due to a temperature extreme present at the intended roll
position in the machine web-path. Please ask a Dover Flexo Electronics
Applications Engineer for assistance in specifying a particular tension
transducer for use in a vacuum application.