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4 Operation
Use the UP/DOWN key to toggle between
Stop when
appears, blinking, on the display.
Enter to move to the next screen.
Use UP/DOWN key to change the span setting value.
ENTER will move the blinking field to units (%/ppm). Use UP/DOWN
key to select the units, as necessary. When you have set the concentration of
the span gas you are using, Enter to begin the Span calibration.
The beginning span value is shown in the upper left corner of the
display. As the span reading settles, the screen displays and updates infor-
mation on
. Spanning automatically ends when the span output corre-
sponds, within tolerance, to the value of the span gas concentration. Then
the instrument automatically returns to the analyze mode.
4.4.2.2
Scroll Span by using UP/DOWN key and Enter to start the Span
function. The screen that appears allows you to select whether the span
calibration is to be performed automatically or manually.
Use the UP/DOWN key to toggle between
setting. Stop when
to next subfunction screen
Using the UP/DOWN key changes the span value, as necessary. Enter
to move to the units field (%/ppm). Use UP/DOWN key to select unit.
Press Enter to enter the span value into the system and begin the span
calibration.
Once the span has begun, the microprocessor samples the output at a
predetermined rate. It calculates the difference between successive sam-
4-16
Manual Mode Spanning
appears, blinking, on the display. ENTER to move
Teledyne Analytical Instruments
and
span settling.
and
span
Model 2020
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