Emerson Rosemount CT4400, Reference Manual

Page: 37 / 106

The
Gas Sensor Main
screen displays the gas concentration measurements obtained by
the analyzer. In the example shown in Figure 4-4 , the gases Nitric Oxide (NO), Nitrous
Oxide (N
2
O), Carbon Monoxide (CO) and Ammonia (NH
3
) are being measured and, for
each gas, the concentration detected is in parts per million (ppm).
At the end of the start-up procedure, the gas measurements initially appear as
0.00 ppm
until the first readings are taken. After a few seconds, the initial gas concentrations are
displayed.
The Gas Sensor Main screen also shows the status of the analyzer. In the example shown
in Figure 4-4 , the analyzer is Running and OK (e.g., no faults have been identified).
If a fault is identified, is displayed; if maintenance is required, is displayed.
is a link between the Gas Sensor Main screen ( Figure 4-4 ) and the Pressure and
Temperature screen ( Figure 4-5 ). Press to toggle between the two screens.
is a link to the Home Screen . Press to go to a Help screen (described in Help system ).
On the Gas Sensor Main screen, has no function when the analyzer is operating correctly.
If, however, the software detects a fault, an error message is displayed. Press to get
further information on the error.
4.5 Pressure and temperature screen
The Pressure and Temperature screen ( Figure 4-5 ) shows pressure and temperature
measurements taken inside the analyzer. The measurements shown in the manual are
indicative and may vary depending on the configuration of your individual system.
Figure 4-5: Pressure and Temperature Screen
The
Cell Te
reading is the temperature, in °C, of the analysis cell.
The
Transd
reading is the temperature, in °C, of the Transducer.
The
Pressu
reading is the pressure, in Torr, inside the analysis cell.
The
Gas Te
reading is the temperature, in °C, of the gas within the analysis cell.
Reference Manual Operating the analyzer
00809-0100-4244 January 2020
Reference Manual 37