Teledyne 4020 – Hydrocarbon analyzer (special version for automatic background gas switching) User Manual

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Operation Model

4020

Teledyne

Analytical

Instruments

Pre-M Test – GOOD

(status of the medium gain of the

amplifier)

Pre-H Test – GOOD

(status of the high gain of the amplifier)

Note: 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.

To initiate a self-test:

<▲▼>

From the MAIN MENU scroll to the SELF-TEST
function.

<Enter>

Activate the SELF-TEST function by pressing .
This brings up the SELF-TEST initialization screen.

<Enter or Escape> Start the diagnostic testing routine by pressing

or cancel out by pressing .

If you pressed the self-test routine will begin and
after a few moments the results will appear onscreen. 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 Chapters

Maintenance and

Troubleshooting

for number-code information.

To return the analyzer to the MAIN MENU, press
after the results screen.

If you pressed you will be returned to the
Analyze Mode.

4.6.10 The Model Screen

The MODEL screen displays the manufacturer, model, and software

version information. It is accessed via the MAIN MENU by scrolling
(▲▼> to MODEL and pressing .