Version Screen; Showing Negative Oxygen Readings - Teledyne 3000ZA2G Operating Instructions Manual

Trace Oxygen Analyzer
Then the analyzer returns to the initial System screen.

4.3.6 Version Screen

Move the ◄►arrow key to More and press Enter . With Version
blinking, press Enter . The screen displays the manufacturer, model, and
software version information.

4.3.7 Showing Negative Oxygen Readings

For software version 1.4.4 or later, the instrument only displays
oxygen readings that are positive or zero. The instrument can be
reconfigured to show negative readings if sensor output drifts below
zero. This situation may arise after the instrument has been zeroed, as
time progresses the sensor may drift below the zero calibration setpoint.
To show negative oxygen readings on the display:
Press the System key.
Use the Right or Left arrow keys and select More. Press Enter .
Use the ◄► arrow keys and select " Show_Negative=NO ".
Use the ▲/▼ keys to toggle from NO to YES .
Press the Escape key twice to return to the analyze mode.
This preference is stored in non-volatile memory, so this
configuration is remembered after a power shutdown. If the instrument
is cold started, it will go back to default (not showing negative oxygen
readings).
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Show_Negative=NO
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