Emerson Rosemount CT5800, Manual

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Figure 5-6: Calibration / Verification Complete Screen
11. To perform a zero verification for another gas, press .
The software returns to the Select gas screen ( Figure 5-1 ).
12. Repeat the actions in steps Step 3 through Step 10 for the next gas.
13. To perform a span verification, press . Then follow the span verification
procedure in Span verification .
14. If you are finished verifying the analyzer, press .
The software returns to the Gas Sensor Main screen.
5.1.2 Span verification
To verify the span gas concentrations measured by the analyzer when reference gas is
flowing:
Prerequisites
Run the analyzer at a stable temperature for at least thirty minutes before starting this
procedure.
Procedure
1. Use a certified reference gas cylinder as the source of the span verification gas.
2. Ensure 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
supply port on the rear panel of the analyzer.
4. Connect an excess flow line to the unused port on the T-piece and route the excess
flow line to a suitable extractor.
5. On the display controller, browse to the Main menu as described in Main menu .
6. Using and , select
GAS SERVICE
( Figure 5-7 ).
Verifying gas concentrations Reference Manual
September 2019 00809-0100-5800
74 Emerson.com/Rosemount