Emerson Rosemount CT5800, Manual

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15. Repeat steps Step 5 through Step 9 .
16. Press for automatic verification.
This opens the valve (where applicable) and flows the span gas.
17. Allow the concentrations to stabilize and wait for two minutes after stabilization.
This screen gives a reading of the concentration of the selected gas that is present,
as measured by the instrument. In the example shown in
Figure 5-12 , the gas being
measured is NH
3
(ammonia), and the instrument has detected a concentration of
2000.29 ppm.
18. If the reading is within tolerance, no further action is required. Press to end the
span verification process.
The display controller proceeds to the
Result screen ( Figure 5-13 ).
Figure 5-13: Result Screen
19. If the reading is outside tolerance, the span calibrate the analyzer.
Refer to Span calibration .
20. Press to return to the screen shown in Figure 5-14 .
Verifying gas concentrations Reference Manual
September 2019 00809-0100-5800
78 Emerson.com/Rosemount