Emerson Rosemount CT5800 Manual page 85

Reference Manual
00809-0100-5800
11. After the required flush time (dependent on analyzer configuration), the top line on
12. Press
13. Press
6.3.2 Span calibration
Span calibrate to verify the span gas concentrations measured by the analyzer when
reference gas is flowing and, if necessary, calibrate them against the known reference gas.
Prerequisites
Run the analyzer at a stable temperature for at least 30 minutes prior to commencing this
procedure. Startup takes 90 minutes to achieve the required temperature.
Procedure
1. Use a certified reference gas cylinder as the source of the span calibration gas.
2. Make sure that a pressure regulator is connected to the reference gas bottle.
3. Connect a hose from the reference gas bottle, through a T-piece, to the sample
4. On the display controller of the analyzer, browse to the Main menu as described in
5. Refer to
6. Press
Rosemount CT5800
Figure 6-6: Result Screen
the screen changes from Calibrate zero to Result .
This shows the zero calibration is complete.
to finish the process.
to display the Calibrate gas screen
calibration on the same gas (see
supply port on the rear panel of the analyzer. Connect an excess flow line to the
unused port on the T-piece and route the excess flow line to a suitable extractor.
Main menu.
Figure 6-2. Using
.
The Select gas screen
(Figure
(Figure 6-4) and perform a span
Span calibration).
and , select GAS SERVICE .
6-7) opens.
Gas calibration
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