Teledyne 2020 - Explosion proof thermal conductivity analyzer - Manual (Page 36)

4 Operation Model 2020
4-2 Teledyne Analytical Instruments
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4.2 Using the Controls
To get the proper response from these controls, turn the control
toward the desired action (ESCAPE or ENTER—DOWN or UP), and then
release it. Turn-and-release once for each action. For example, turn-and-
release twice 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 ANALYZE MODE. 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 ocon-
centration of the mixure content of the sample, displays the percent of the
concentration in the sample stream, and warns of any alarm conditions.