Teledyne 5000B - Near Infrared Photometer - Manual (Page 47)

Photometric Analyzer Operation /Control Unit 3
Part I 3-19 Teledyne Analytical Instruments
3.4.2 Span Cal
The Span function on the menu is used to span calibrate the analyzer. Span
calibration can be performed in either the automatic or manual mode.
Make sure the span fluid is flowing to the instrument.
3.4.2.1 Auto Mode Spanning
Observe all precautions in sections 3.4 and 3.4.2, above. Press Span to
enter the span function. The screen that appears allows you to select whether
the span calibration is to be performed automatically or manually. Use the
DÑ arrow keys to toggle between AUTO and MAN span settling. Stop
when AUTO appears, blinking, on the display.
Select span
mode: AUTO
Press Enter to move to the next screen.
Span Val: 2Ш.ШШ %
To begin span
Use the < > arrow keys to toggle between the span concentration value
and the units field (%/ppm). Use the DÑ arrow keys change the value and/
or the units, as necessary. When you have set the concentration of the span
fluid you are using, press Enter to begin the Span calibration.
####.##% SO2
Slope=#.### Span
The beginning span value is shown in the upper left corner of the
display. As the span reading settles, the screen displays and updates informa-
tion on Slope. Spanning automatically ends when the span output corre-
sponds, within tolerance, to the value of the span fluid concentration. Then
the instrument automatically returns to the analyze mode.
3.4.2.2 Manual Mode Spanning
Press Span to start the Span function. The screen that appears allows
you to select whether the span calibration is to be performed automatically or
manually.
Select span
mode: MANUAL