EL3000
CONTINUOUS GAS ANALYZERS | OI/EL3000-EN REV. D
179
Uras26, Limas23 – measuring the
calibration cell
Menu Path
‘
Maintenance /
Basic Settings /
Measure Cal. Cell’
Figure 92: ‘Measure calibration cell’ menu
Definition
When measuring the calibration cell, the current concentration
of the calibration cell is determined by test gases. The measured
concentration is stored as a set point for calibration with the
calibration cell.
When do calibration cells need to be measured?
We recommend measuring the calibration cells once a year.
In addition, er recommend measuring the calibration cell after
the measuring range set by the user has been calibrated with
test gases for the first time and whenever the test gas has been
changed.
Before measuring the calibration cells
Prior to measuring the calibration cells, the zero and end points
of the applicable sample components must be calibrated with
test gases.
Connect the zero gas supply.
During calibration cell measurement, the zero gas supply must
be connected.
Status Signal
While the calibration cell is being calibrated, the ‘Function check’
status signal is active (see
Status messages – Explanations
page 166).
Note
The calibration cell cannot be measured while an automatic
calibration is in progress.
Limas23 – Intensity display
Menu path
‘
Maintenance /
Diagnosis /
Device Status /
Analyzer Status /
Limas Intensity’
Figure 93: ‘Limas Intensity’ menu
Emission intensity
The emission intensity at the test receiver and reference receiver
gives indications about the aging condition of the built-in UV
lamp and possible contamination of the sample cell.
Display of the emission intensity
For each measured component, various values for the radiation
intensity are displayed in mV. The abbreviations have the
following meaning:
MD
Test receiver
RD
Reference receiver
-M
Measurement phase
V
Comparison phase
Is
Value in measurement mode (actual value)
Init
Value in the intensity standardization of the built-in UV lamp
Additionally, the operation time of the built-in UV lamp is
indicated.
Note
• The serial number as well as the operating time of the built-in
UV-lamp are displayed in the ‘Device Information’ menu (see
on page 198).
• Intensity standardization has been performed at the factory.
It must be repeated after the UV lamp is replaced.
