Examples Of Use - Sensopart FT 50 RLA-70-L8 Instructions De Service Et De Montage

Examples of use

Differential thickness measurement with wide wooden boards
Two opposite facing sensors enable non-contact measurement and control of the thickness of the wood or wooden
boards. A change in thickness is indicated at the analogue output of the master. 12 mA corresponds with the taught
reference thickness of the object.
INFORMATION
Although a FT 50 RLA sensor only has a measuring range of 70 or 220 mm respectively, it is possible
to measure excess width using master-slave mode. The solution is in the alignment of both sensors
(illustr. 20). The necessary measuring range depends on the maximum difference in thickness. For slight
differences in thickness and little fluctuation in feed position, sensors with a small measuring range can
be selected.
Slave
The analogue output on the master sensor supplies information on thickness.
INFORMATION
To achieve optimum use of the measuring range, the object must be positioned in the centre of
the measuring range.
Parallel differential measurement:
Object detection (or measurement) with a fluctuating distance.
The distance between the object and sensor often fluctuates. Reliable detection is thus not possible with a back-
ground sensor . Using two FT 50 RLA 70/220 sensors and parallel differential measurement mode (function no.
27), reliable object detection can be achieved via the analogue output of the master or through the teach-in of switch
thresholds on the master (function no. 2 and 3).
60
Nominal dimension
Master Control
Illustr. 23
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FT 50 RLA Disctance sensor - GB - 068-13671 - 20.04.2009-05
Mounting and
operating instructions
Illustr. 22
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