Measurement and Control of Tension in Moving Webs
for Use with Pillow block Bearings and Rotating Shaft Installations
Type UPB Tension transducers are designed for the measurement and
control of tension on larger web and wire machinery where the guide
rolls are typically mounted on pillow block bearings.
Design parameters are
the result of many years of experience in the field of tension
measurement and control in process machinery. These transducers utilize
a full Wheatstone bridge of semiconductor strain gages. mechanical stops
are provided to limit load displacement to 0.10".
UPB Transducers may be
applied to measure loads both normal to and at any angle up to 45°.
These electro-mechanical Tension Transducers operate in the principle of
strain gages, applied to the tension and compression areas of a beam,
sensing surface deflection under varying load conditions. Semiconductor
strain gages are used to provide a high level, linear output signal.
UPB Transducers are
typically applied in pairs, one under each of the supporting guide roll
pillow bearings. This results in total tension measurement regardless of
web position and differences in edge tensions. the model UPB has been
utilized as a retrofit component and has also been applied as an OEM
component in manufactures systems. They provide the same versatility of
tension measurement, recording and control that is available with
CLEVELAND-KIDDER transducer Types "S", "FL",
"PB" and "BR". See Engineering Data Sheet DS-TRS.
- UPB Transducers are
available in a wide range of applications.
- Overload stops in
tension and compression modes of operation.
- High natural
displacement of sensing element provides high, linear output signal.
- Utilizes simple
excitation and readout circuitry.
compensated bridge circuit.
- Heavy duty
- Senses actual web
- Corrosion resistant
finish and dust seal.
- Can be mounted at any
- No hysteretic
resulting from mechanical friction.
- Tension sensing
permits indication and control for consistent product quality.
- Highly responsive for
enhanced system performance.
- Negligible motion
maintains proper roll alignment.
- Ease of mounting
simplifies design of new or retrofit applications.
- Heavy duty
construction and low maintenance design minimize down time.
use in the measurement of web tension, when pillow block bearings are used
for guide roll mounting, on continuous processing machinery applications
Typically used in
the production of:
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