DURAG D-R 290, Руководство по эксплуатации

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7 | Checking / setting parameters with D‑ESI 100
D-R 290 129
Type Unit Description
Opacity % OP Opacity as specified in section 4.2.4 Opacity [
}
46] . Calcula­
ted using the current stack correction factor that was set
(see 7.7.6 Settings [
}
142] )
Optical density OD Optical density as specified in section 4.2.6 Optical density
(extinction) [
}
48]
Opacity (SP) %OP SP
Optical density as specified in section 4.2.4 Opacity [
}
46]
with a fixed flue stack correction factor of 1.
Opacity (DP) %OP DP
Optical density as specified in section 4.2.4 Opacity [
}
46]
with a fixed flue stack correction factor of 2.
Extinction coefficient 1/km
Extinction coefficient
k as specified in section
4.2.7 Calcula­
tion of the dust concentration [
}
48] .
For correct calculation of the extinction coefficient, the
measurement path length must be set (see 7.7.6 Settings
[
}
142] )
Visual range km Koschmieder visual range. For correct calculation of the
visual range, the measurement path length must be set
(see 7.7.6 Settings [
}
142] )
Table 7.4: Available type codes for the D-R 290
Example: Settings for the measured value correction
If necessary the real measurement value that was determined can be modified to suit
the physical characteristics of the duct in which the measurement is being performed,
and/or to suit the purpose to which the signal is to be put (depending on the plant or
evaluation process).
A measured value correction is performed irrespective of any gravimetric calibration
parameter setting based on a gravimetric calibration.
If a measured value correction is performed, this takes effect in addition to the settings
for the gravimetric calibration.
A measured value correction is performed using the variables "Offset a0", "Gradi­
ent a1", "Gradient a2" and "Gradient a3".
Setting path:
Sitemap > »Device (e.g. D‑R 290 ) > >
Common Parameters > Setting
variables > [offset a0/gradient a1/
gradient a2/gradient a3] >
Adjusting the variable for the measured value correction
Left click on "Device" in the sitemap.
Left click on for the desired device in the device list.
Under
Common parameters
in the list field, after "
Select group
", select "
Set­
ting variables"
.
7.5.3
Step 1
Step 2
Step 3