Teledyne PEM-9004 - Portable emissions analyzer - Manual (Page 30)

Operation PEM-9004
Teledyne Analytical Instruments 18
Table 4-1: Function Keys
Key Function Action
ON/OFF switch Switches the power on or off
to the instrument.
Backlight key Turns the display backlight
on or off.
Change layout Used to alter the layout of
the menu specific F1, F2,
and F3 keys.
Change display Alters line by line the way the
display is arranged.
Pump ON/OFF switch Turns the gas feed pump on
or off.
Clear key Close/cancel/reset a
function, menu or display
item.
Enter key Confirms an entry or action.
The function buttons are used to select specific options from the
displayed menu. Some menus have numerous options to select from
such as the Flue Gas menu shown in Figure 4-2. In this case the
function buttons (F1, F2, F3) will correspond to the functions on the
selected line. For instance, if line 3 is selected by scrolling down with
the “Change Layout” key (), then pressing F1 will select the “Save”
function, F2 will select “Draught detection”, and F3 will select “CO
protect”.
Note that the screen display will list: “Save”, “Draught detection”
and “CO protect” instead of F1, F2, and F3.