Teledyne 3010PA - Split architecture percent oxygen analyzer - Manual (Page 99)

A-10: Appendix
Appendix Models 3010PA
A-6 Zero Cal
The Zero button on the front panel is used to enter the zero calibration
function. Zero calibration can be performed in either the automatic or manual
mode. In the automatic mode, an internal algorithm compares consecutive
readings from the sensor to determine when the output is within the accept-
able range for zero. In the manual mode, the operator determines when the
reading is within the acceptable range for zero. Make sure the zero gas is
connected to the instrument. If you get a
CELL FAILURE message skip to
section 4.4.1.3.
Auto Mode Zeroing
Press Zero to enter the zero function mode. The screen allows you to
select whether the zero calibration is to be performed automatically or manu-
ally. Use the
∆∇
arrow keys to toggle between AUTO and MAN zero
settling. Stop when AUTO appears, blinking, on the display.
Zero: Settling: AUTO
To Begin
Press Enter to begin zeroing.
#### % Zero
Slope=#### ppm/s
The beginning zero level is shown in the upper left corner of the dis-
play. As the zero reading settles, the screen displays and updates information
on
Slope (unless the Slope starts within the acceptable zero range and does
not need to settle further).
Then, and whenever Slope is less than 0.08 for at least 3 minutes,
instead of Slope you will see a countdown: 5 Left , 4 Left , and so fourth.
These are five steps in the zeroing process that the system must complete,
AFTER settling, before it can go back to
Analyze .
#### % Zero
4 Left=### ppm/s
The zeroing process will automatically conclude when the output is
within the acceptable range for a good zero. Then the analyzer automatically
returns to the
Analyze mode.
Manual Mode Zeroing
Press Zero to enter the Zero function. The screen that appears allows
you to select between automatic or manual zero calibration. Use the
∆∇
keys
to toggle between AUTO and MAN zero settling. Stop when MAN appears,
blinking, on the display.