Foerster CIRCOGRAPH DS, Operating Instructions Manual

Page: 21 / 67

FUNCTIONAL DESCRIPTION 2.3 Construction
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2.3.2 Rotating Head Ro 65
The rotating head is the main component of the sensor system.
It consists of:
Rotor
Transmitter
Drive
Housing
Rotating head electronics
The operating side is to be
selected as right or left in the
order!
Rotor
The rotor consists of a hollow shaft, a rotor disc and the movable part of
the transmitter.
The rotor is driven by the motor by means of a V-ribbed belt. It is sup-
ported in the housing by two high-speed bearings.
The high-precision rotating disc for holding the test heads is fitted on the
front side.
A pivot-mounted spiral disc with an actuating gear and automatic blocking
facility is fitted in the rotating disc for precise and simultaneous test head
diameter adjustment.
DANGER !
Never run the rotating head without test heads!
Always use test heads in pairs with the spring in the same position!
Rotating disc with test heads
left: head in lift off position
right: testing position
Fig. 2.4 CIRCOGRAPH sensor system Ro 65, operating side left (L) or right (R)