Emerson Rosemount CT4400, Reference Manual

Page: 43 / 106

11. Allow the concentration readings to stabilize.
Figure 5-5: Result
This screen gives a reading of the concentration of the selected gas that is present
as an impurity in the nitrogen calibration gas.
In the example the gas being measured is NH
3
, and the analyzer has detected a
concentration of 0.866 ppm.
If the reading is within tolerance, no further action is required.
12. Press to end the zero verification process.
13. Press the appropriate button.
Option Description
To return to the
Gas Service Screen
.
To select the next gas from the
Select
Gas screen .
To return to the Main Menu .
To return to the Gas Sensor Main
screen ( Figure 4-4 ).
Reference Manual Verifying gas concentrations
00809-0100-4244 January 2020
Reference Manual 43