DURAG D-R 290, Operating Manual

Page: 146 / 202

7 | Checking / setting parameters with D‑ESI 100
146 D-R 290
After the blockage has been removed, "0" must by input here to allow the shutter to be
opened again.
Every time the device is restarted the parameter "
Fail-safe shutter 1 (or 2) blocked and
deactivated" is set to "0". The system then attempts to open the shutter(s).
Calibration on the dust-free measuring path
The calibration is performed in the following sequence:
1. Install the measuring head and reflector in a dust free space (measuring tube) at
the exact original measuring path length. The lengthening of the path due to the
disc springs and the fail-safe shutters must also be taken into account. Ensure the
most parallel alignment possible of the flanges for the measuring head and the re­
flector.
2. The optical surfaces (outer glass and zero point reflector) of the measuring system
must be cleaned very carefully and without leaving any smears, using an optical
cleaning cloth and glass cleaning agent (see section 8.2.4 Cleaning the outer glass
and the zero-point reflector: [
}
157] ).
3. Switch on the measuring head and wait until it is ready for operation (the mainte­
nance LED must not light up continuously).
4. Check the contamination display. The contamination must not be greater than 2%.
Setting path:
Device (D‑R 290 ) > >
Specific Parameters >
D‑R 290
Measured values > contamination [%]
1. First the measuring head has to be aligned optically (see section 6.1 Optical align­
ment [
}
107] ). If the measuring head and the reflector have been mounted as
shown in figure Fig. 5.10 or Fig. 5.18 , the 3 nuts on the reflector flange can be
tightened.
First tighten the nut B on the measuring head. When the nut A is tightened the
measuring head inclines to the axis B - C, and the figure in the image display
moves in a vertical direction. When the nut C is tightened or loosened, the measur­
ing head pivots at the axis A - B and the figure in the image display moves in a
horizontal direction.
2. The metal knurled screw on the optics has to be removed (control the focus set­
ting) and the focus has to be set with the plastic button so that a sharp image can
be seen in the image display for control distances of 1 to 2.25 meters (reflector 1).
For control distances of more than 2.25 metres (reflector 2), turn the plastic button
anticlockwise to the stop.
3. Then lock the setting with the metal knurled screw.
4. The measurement on the dust-free measuring path can be started in the area
Functions -> D‑R 290 Service Functions (see illustration below).
Setting path:
Device (D‑R 290 ) > >
Specific Parameter >
D‑R 290
Measured values > Contamination [%]
7.7.8
Step 1
Step 2