Device description
8
GS 754B
Leuze electronic
4
Device description
4.1
General information
The central part of the unit is an optical sensor that generates a horizontal band of light
(figure 3.1). The band of light illuminates a CCD line array camera. This CCD array produces
an output signal that depends on the number of illuminated pixels.
The system has a permanent calibration and guarantees maximum precision and stability
at all times.
Every sensor features two interfaces (see figure 3.1).
1.
Interface P (RS 232):
programming interface for configuring the measurement modes and for visualizing the
measurement values.
2.
Interface M12 (process interface):
data for the control system are transmitted via this interface. Depending on the device
model used, the measurement values are output either as an analog current/voltage
signal or as digital, serial information (RS 232, RS 422).
Depending on the device model used, not all measurement values are available at the P and
M12 interfaces:
• The analog interface can only output one measurement value at a time.
• The digital interface can transmit any number of measurement values.
4.2
Optical data
Table 4.1:
Optical data
GS 754B
Output modes 1 … 5
Output mode 7 (default)
Measurement range
25mm
25mm
Mouth width
27mm/98mm
27mm/98mm
Mouth depth
42mm
42mm
Resolution
≤
0.1mm over the entire measurement range
≥
0.014mm per measurement level
Smallest object
≥
0.5mm
≥
0.5mm
Light source
infrared LED
infrared LED
Wavelength
850nm
850nm
