Teledyne 3010TB - Split architecture trace oxygen analyzer - Manual (Page 78)

4 Operation Model 3010TB
4-2: Part II
Teledyne Analytical Instruments
range of interest is recommended. Since the oxygen concentration in air is
209,000 ppm, the cell can take a long time to recover if the instrument is
used for trace oxygen analysis immediately following calibration in air.
Connect the calibration gases to the analyzer according to the instruc-
tions given in Section 3.4.1, Gas Connections, observing all the prescribed
precautions.
Shut off the gas pressure before connecting it to the analyzer, and
be sure to limit the pressure to 40 psig or less when turning it back on.
Readjust the gas pressure into the analyzer until the flowrate (as read on
the analyzer’s SLPM flowmeter) settles between 0.5 and 2.4 SLPM (ap-
proximately 1-5 scfh).
Refer to Part I: Control Units, section 4.4, The Zero and Span Func-
tions for further instructions.
4.4 System Self Diagnostic Test
The self diagnostics are run automatically by the analyzer whenever the
instrument is turned on, but the test can also be run by the operator at will.
During the test, internal signals are sent through the power supply, output
board and sensor circuit automatically. The return signal is analyzed, and at
the end of the test the status of each function is displayed on the screen,
either as OK or as a number between 1 and 3. (See Table 4-1 for number
code.)
Note: Remote Probe connector must be connected to the Analysis
Unit, or sensor circuit will not be properly checked.
Instructions for running self diagnostics are repeated here for your
convenience:
1. Press the System button to enter the system mode.
2. Use the < > arrow keys to move to More, and press Enter.
3. Use the < > arrow keys to move to Self-Test, and press Enter .
During preamp testing there is a countdown in the lower right corner of
the screen. When the testing is complete, the results are displayed.
Power: OK Analog: OK
Preamp: 3
The following failure codes apply: