ABB Stressometer® Systems Digital Transmission Unit PFSA107

ABB’s Digital Transmission Unit provides non-contact,

maintenance-free sensor excitation and signal transmission

from the Stressometer® flatness measurement roll.

Measurement made easy

Digital Transmission Unit

The DTU is built to be completely insensitive to

tough mill environments. The main features are:

• Signal transmission over a non-contact capacitive

link. The link is not affected by the surrounding air

quality which could be the case with optical links.

• Sensor excitation using a non-contact rotating

transformer.

• Maintenance-free hybrid bearings are used to

ensure a long lifetime.

• All measurement signals are transmitted through

a fiber optic cable to the control cabinet.

Direct and parallel measurement

It is important that all measurement points are

processed in parallel, i.e. at the same time.

This means that strip tension variations will

influence all measurement points in the same

way and thus will not influence the actual flatness

measurement.