Emerson Rosemount CT4400 Reference Manual page 46

Verifying gas concentrations
January 2020
9. Scroll
10. Use
11. The VERIFY SPAN screen will be visible while the analyzer makes the verification
46
or and select RUN SPAN. Press
Figure 5-10: For NH3
Note
Allow the concentration readings to stabilize.
or to highlight each digit in turn; then use
decrease the value until the concentration displayed matches the cylinder you are
using. Once the concentration has been set, Press
Figure 5-11: Verify Input
measurement.
Allow the concentration readings to stabilize. After the purge time set has elapsed,
the RESULT screen will then be shown.
Reference Manual
00809-0100-4244
.
or to increase or
to accept.
Rosemount CT4400