EL3000
CONTINUOUS GAS ANALYZERS | CI/EL3000-EN REV. C
101
ZO23 – Commissioning the gas analyzer
Note
We recommend starting the first calibration procedure at the
installation site on the day before the actual measurement
operation is started, so that the gas paths and valves can be
purged as long as possible.
Commissioning the gas analyzer, first calibration at the
installation site:
1. Power-up the power supply on the gas analyzer.
• After 15 min, the operating temperature of the cell has
been reached, the corresponding status message
goes out. From this moment on, the gas can be
connected.
2. Supply ambient air for setting the reference point
(= electric zero point) and wait for the measured value to
stabilize (time approx. 2 h).
• During this time, flush the test gas valves and the gas
inlet line with oxygen-free gas (for example, with
nitrogen from a ring line) or with sample gas (flow
rate 5 to 10 l/h).
3. Set the reference point to the oxygen content of the
ambient air, taking into account the air humidity. See
calculation example in
4. Use nitrogen to flush the entire gas path and the valves,
which was previously blown with air. It’s best to do this
for at least 12 hours, for example overnight.
5. Feed in the span gas and wait for the measured value to
stabilize (max. duration 2 h).
6. Set the end point value in accordance with the analysis
certificate of the test gas cylinder used.
7. The gas analyzer is ready for measurement; connect
sample gas.
Note
For information on the test gases, refer to
Fidas24 – Commissioning the gas analyzer
Power-
up the power supply, heat
-
up phase, connect
operating gases
1. Switch on the power supply of the gas analyzer and the
heaters of the Fidas24.
2. During the start-up phase ‘Booting’, the LCD display shows
the name of the gas analyzer and the number of the software
version. At the end of the start-up phase, the LCD display
switches over to display the measured values.
3. Select the ‘Controller Values’ menu item:
‘
Maintenance /
Diagnosis /
Device Status /
Analyzer Status /
Controller Values’
Under this menu item, both the actual and setpoint values
and the manipulated variables of the internal temperature
controllers are displayed:
T-Re.D:
Detector temperature
T-Re.E:
Temperature of the heated sample gas
connection
T-Re.K:
Internal combustion air conditioning
temperature
TR.VV1:
Temperature of the pre-amplifier
The temperature values increase slowly after activating the
power supply.
4. Switch on the instrument air, combustion air and
combustion gas (H
2
or H
2
/He mixture). Adjust the pressure
to the value specified in the Device Data Sheet with the
corresponding external pressure regulator.
5. The ‘Controller Values’ menu item also displays both the
actual and set point values and the manipulated variables of
the internal pressure controllers:
C Air:
Combustion air pressure
C Gas:
Combustion gas pressure (H
2
or H
2
/He
mixture)
MGE:
Pressure at the sample gas nozzle
MGA:
Pressure in the combustion chamber (output)
Note
The following status messages are active during the heating-up
phase:
