DURAG D-R 290, Operating Manual

Page: 162 / 202

8 | Maintenance
162 D-R 290
starts and stops the check. During the contamination check the device measures the
intensity with the zero point reflector swung into position, and compares it with the fac­
tory calibration value. The output from the measuring channels is dependent in every
case on the settings for the channel (see section 7.5.3.6 Settings [
}
133] ).
Direct output of the contamination result measured during the current measurement
and during the last contamination measurement can be found under:
Setting path:
Device (D‑R 290 ) >
> Specific parameters >
D‑R 290
Measured values > contamination [%]
Reference point check
The reference point check can be started and stopped manually via:
Setting path:
Device (D‑R 290 ) >
> Functions > Maintenance /
Service Functions > Start Reference point check
Device (D‑R 290 ) >
> Functions > Maintenance /
Service Functions > Stop Reference point check
During the reference point check the device measures the intensity with the zero point
reflector swung into position and mesh filter swung into position, and compares it with
the factory reference value. The output from the measuring channels is dependent in
every case on the settings for the channel (see section 7.5.3.6 Settings [
}
133] ).
Direct output of the opacity measured during the current measurement and during the
last reference value measurement can be found under:
Setting path:
Device (D‑R 290 ) >
> Specific parameters >
D‑R 290
Measured values > Reference point value [% OP
SP]
Control cycle
The automatic control cycle is performed automatically; interval and duration of the in­
dividual measurements can be configured on the maintenance settings (see section
7.7.2 Control cycle step duration and control cycle interval [
}
140] ).
During the control cycle the following tests are performed successively:
●
contamination check
●
zero point check
●
reference point check
In addition to the automatic performance, the control cycle can be started and stopped
manually by:
Setting path:
Device (D‑R 290 ) >
> Functions > Maintenance /
Service Functions > Start automatic control cycle
Device (D‑R 290 ) >
> Functions > Maintenance /
Service Functions > Stop automatic control cycle
8.2.9
Fig. 8.7: Turntable plate
8.2.10