Teledyne 3000ZA operating instructions Version Screen, Showing Negative Oxygen Readings

Operation 3000ZA

TRAK/HLD Auto—Cal

PSWD Logout More

Use the __ arrow keys to blink More, then press Enter.

Version Self—Test

Use the __ arrow keys again to move the blinking to the Self–Testfunction. The screen will follow the running of the diagnostic.

RUNNING DIAGNOSTIC

Testing Preamp — 83

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 module is functioning properly if it is followed by OK. A number indicates a problem in a specific area of the instrument. Refer to Chapter 5 Maintenance and Troubleshooting for number-code information. The results screen alternates for a time with:

Press Any Key

To Continue...

Then the analyzer returns to the initial System screen.

4.3.6Version 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

Teledyne Analytical Instruments 38