4 Operation Model 3010MB
4-14: Part I Teledyne Analytical Instruments
c. Check whether more time is needed for readings to drop to a
satisfactory level. This might happen when zero was started from
very high PPM level
If there are no leaks and the span gas is OK, replace the cell as de-
scribed in Part II Analysis Units, chapter 5 Maintenance.
4.4.2 Span Cal
The
Span
button on the front panel is used to span calibrate the ana-
lyzer. Span calibration can be performed using the automatic mode, where
an internal algorithm compares consecutive readings from the sensor to
determine when the output matches the span gas concentration. Span cali-
bration can also be performed in manual mode, where the operator deter-
mines when the span concentration reading is acceptable and manually exits
the function.
4.4.2.1 Auto Mode Spanning
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 ∆∆
∆∆
∆∇ arrow keys to toggle between AUTO and MAN span
settling. Stop when AUTO appears, blinking, on the display.
Span: Settling: AUTO
<ENT> For Next
Press
Enter
to move to the next screen.
Calib. Holding time
Cal hold: 5 min
This menue allows the operator to set the time the analyzer should be
held in the auto span mode. It does not affect anything in Manual Mode.
Just press Enter to continue.
Press
Enter
to move to the next screen.
Span Val: 000008.00
<ENT>Span <UP>Mod #
Use the ∆∆
∆∆
∆∇ arrow keys to enter the oxygen-concentration mode. 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
(209000.00 if you are using air), press
Enter
to begin the Span calibration.