Emerson Rosemount CT5100, Reference Manual

Page: 105 / 179

6. Using the
LEFT, RIGHT, INCR
(increase), and
DECR
(decrease) buttons, enter the
cylinder concentration (e.g., 20 ppm).
Figure 10-22: Calibration
Figure 10-22 displays the screen as the calibration progresses.
7. Press OK to confirm.
Once complete, the program will automatically open Span Factor For NO
( Figure 10-23 ).
Figure 10-23: Span Input
Note that if an excessively high or low span factor is calculated (<0.7 or > 1.3 for
example,) and if the calibration gas is a different concentration from that set above,
it will be rejected and the previous span factor will be displayed and will continue to
be used.
Reference Manual Gas calibration
00809-0100-4512 October 2019
Reference Manual 105