Ametek 900

4-46 | Model 900 ADA / Model 930 Sulfur Pit Analyzers
4. To initiate the Manual Span, press F2 y, where ‘y’ = 1 (SO
2
) or 2 (H
2
S).
The User Interface will prompt “Man/Spany?”.
Observe the concentration reading for the component on the bottom
line of the User Interface. When it has stabilized at or near the concen-
tration of component ‘y’ in the Calibration Gas mixture, press:
Ent for Yes The IntTimer duration will count down to ‘0’ during
which time the reading is averaged if AdjDisable is set
to ‘0’. The calibration value for the component will be
adjusted automatically and the screen will revert to the
CAL mode normal display.
Esc for No The function is aborted and the calibration value for
the component is not adjusted.
5. Turn off the Calibration Gas mixture with component ‘y’. The span
process for the component is complete.
If required, repeat this procedure for each component.
6. Return the analyzer to the original Flow Control mode by keying in
F5 0 Del n Ent where ‘n’ is the numerical value recorded earlier.
7. Remove the calibration gas line and plug the Calibration Gas Port.
Figure 4-7
Calibration gas setup.
(ManSpany) CAL
F2 2Del ‘y’ Ent Ent