DOUBLE PICK-UP WITH FIBRE OPTIC OUTPUT
TYPE VDB...
ï ¿ ½ The double pick-up converts electrical impulses into light impulses
and transmits these through a plastic optical fibre to the receiver,
which is installed away from the extreme conditions. This converts
the light impulses of the signal pick-up back into electrical impulses
and outputs them to electronic evaluation devices for further
processing. The output signal of the fibre optic receiver has a resolution
of 2 impulses per measured volume with a pulse duty factor
of 1 : 1.
ï ¿ ½ The signal frequency of the output impulses is proportional to
the speed of rotation of the gearwheel and with the flow velocity
and must be processed by the connected electronic readout
according to the values of the impulses.
ï ¿ ½ The output impulses of the fibre optic receiver can be either a
PNP- or a NPN-switched signal. The coding of the signals is easily
possible and is performed on 2 separately programmable jumper
bars in the receiver
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