Teledyne 3000 Ultra Trace - PPB oxygen analyzer User Manual
Page 49
Ultra Trace Oxygen Analyzer
Operation 4
4-15
Teledyne Analytical Instruments
This menu allows the operator to set the time the analyzer should be
held in the AUTO span mode, after the readings of the analyzer settle. Five
minutes is the default, but it could be adjusted anywhere from 1 to 60 min-
utes by using the UP or DOWN keys.
Press
Enter
to move to the next screen.
Span Val: 008.00 ppm
Use the
∆∆∆∆∆∇
arrow keys to enter the oxygen-concentration mode
(999.99 ppm is maximum value of span gas allowed). Use 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, press
Enter
to
begin the Span calibration.
#### ppm Span
Slope=#### ppm/s
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 gas concentration. Then the
instrument automatically returns to the analyze mode.
4.4.2.2
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.
Span: Settling:MAN
Use the
∆∇
keys to toggle between
AUTO and MAN span settling. Stop
when
MAN appears, blinking, on the display. Press
Enter
to move to the
next screen.
Press
Enter
to move to the next screen.
Calib. Holding time
Cal hold: 5 min
This menu allows the operator to set the time the analyzer should be
held in the AUTO span mode. It does not have any effect in the MANual
mode. Just press Enter key to continue.