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Instruction Manual
748214-V
June 2009
P-8 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Model 951C
b. Supply upscale standard gas of accu-
rately known NO
X
content to rear panel
SAMPLE inlet.
c. Adjust front panel RANGE1 Control so
that reading on meter or recorder is
equal to the know parts-per-million con-
centration of NO
X
in the span gas.
d. Adjust R25 on the signal board so that
the Display value and the recorder out-
put are equal.
NOTE
It is the responsibility of the user to
measure efficiency of the NO
2
-to-NO
converter during initial startup, and
thereafter at intervals appropriate to the
application, normally once a month.