Manual Mode Spanning - Teledyne 3000MA Operating Instructions Manual

Percent Oxygen Analyzer
Press Enter to move to the next screen.
Use the
the < > arrow keys to blink the digit you are going to modify. Use the
arrow keys again to change the value of the selected digit. When you have
finished typing in the concentration of the span gas you are using (20.90 if
you are using air), press 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 informa-
tion on
of the displayed value of the oxygen concentration (in ppm) for three min-
utes. Then the instrument automatically returns to the analyze mode.
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.
Use the
Stop when
the next screen.
Press
Use the arrow keys to enter the oxygen concentration of the span gas
you are using (20.90 if you are using air). The < > arrows chose the digit,
and the
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 samplings
and displays this difference as
arrow keys to enter the oxygen-concentration mode. Use
. Spanning automatically ends when the slope is less than 1/50
4.4.1.2

Manual Mode Spanning

keys to toggle between
appears, blinking, on the display. Press Enter to move to
( ) to permit modification (
arrows choose the value of the digit.
Teledyne Analytical Instruments
and span settling.
) of span value.
on the screen. It takes several seconds
Operation 4
4-11