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9 Levelling system operation
9.4 Working with the digital rotary sensor
9.4.1 Installation and set-up
The digital rotary sensor "drags" the sensor arm with the aid positioned
on it behind itself.
Two different aids are available for sensing the various references.
The height of the digital rotary sensor should be set in such a way that
the flattened side of its sensor axle is positioned vertically to the
reference when the sensing tube or sensing shoe is in contact. This
position results in the perfect angle for measured value recording. (See
also the following drawings.)
Sensing from
the cable
The sensing tube is used for sensing from the cable.
By screwing in or out, set the counterweight so that the sensing tube
exercises slight pressure on the cable from above.
If the tension of the cable which is used as the reference is too low, it is
possible to guide the sensing tube beneath the cable. To do this, the
counterweight must be set so that the sensing tube presses slightly
against the cable from below.
Sensing from
the ground
The sensing shoe is used when sensing from the ground.
By screwing in or out, set the counterweight so that the sensing shoe
exercises slight pressure on the reference.
Direction of travel
Direction of travel
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