Teledyne 3000TA-EU - General purpose trace oxygen analyzer User Manual
Page 58
Operation 3000TA-
EU
Teledyne
Analytical
Instruments
46
#.# ppm Anlz
CELL FAIL/ ZERO HIGH
Before replacing the cell:
Check your span gas to make sure it is within
specifications.
Check for leaks downstream from the cell, where oxygen
may be leaking into the system.
If there are no leaks and the span gas is OK, replace the cell as de-
scribed in Chapter 5, Maintenance.
4.4.2 Span Cal
The Span button on the front panel is used to span calibrate the
analyzer. 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 calibration can also be performed in manual mode, where the
operator determines when the span concentration reading is acceptable
and manually exits the function.
4.4.2.1
A
UTO
M
ODE
S
PANNING
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
Press Enter to move to the next screen.
Calib. Holding time
Cal hold: 5 min