Teledyne 3020T operating instructions Mode/Function Selection, Analysis Mode, Setup Mode

4 Operation Model 3020T

toward UP to move the VFD screen two selections upwards on the list of options (menu).

The item that is between arrows on the screen is the item that is cur- rently selectable by choosing ENTER (turn-and-release toward ENTER with the ESCAPE/ENTER control).

In these instructions, to ENTER means to turn-and-release toward ENTER, and To ESCAPE means to turn-and-release towards ESCAPE. To scroll UP (or scroll DOWN) means to turn-and-release toward UP (or DOWN) as many times as necessary to reach the required menu item.

4.2.1 Mode/Function Selection

When the analyzer is first powered up, and has completed its initializa- tion and self diagnostics, ESCAPE toggles the instrument between the ANALYZE screen (Analysis Mode) and the MAIN MENU screen (Setup Mode). The ANALYZE screen is the only screen of the Analysis Mode.

The MAIN MENU screen is the top level in a series of screens used in the Setup Mode to configure the analyzer for the specific application. The DOWN/UP commands scroll through the options displayed on the VFD screen. The selectable option appears between arrows. When you reach the desired option by scrolling, ENTER the selection as described below.

ESCAPE takes you back up the hierarchy of screens until you reach the MAIN MENU again. ESCAPING any further just toggles between the MAIN MENU and the ANALYZE screen.

4.2.1.1 Analysis Mode

This is the normal operating mode. The analyzer monitors the oxygen content of the sample, displays the percent of oxygen, and warns of any alarm conditions. Either control switches you to Setup Mode. Setup Mode switches back to Analyze Mode if no controls are used for more than 5 s.

4.2.1.2 Setup Mode

The MAIN MENU consists of 11 functions you can use to customize the operations of the analyzer. Figure 4-1 shows the functions available with the Model 3020T. They are listed here with brief descriptions:

1AUTO-CAL:Used to define and/or start an automatic calibration sequence.

4-2 Teledyne Analytical Instruments