Chapter 2. Initial Setup
Transport® Model PT878 Portable Liquid Flowmeter User’s Manual 17
2.4.2 Keypad
The PT878 keypad has 25 keys. The functions for each key are as follows
(see Figure 7 on page 18):
•3 function keys ([F1], [F2], [F3]) — enable you to select the special
functions which appear at the bottom of the screen.
•12 numeric keys (including – and .) — enable you to enter numeric data.
•4 arrow keys ([W], [X], [S], [T]) — enable you to move through the
menu options.
• [?] Help key— enables you to access on-line help (discussed on
page 19).
•[MENU] Menu key — enables you to access the Main Menu.
•[ENTER] — enables you to enter a particular menu, and enters selected
values into the PT878 memory.
•[SEL] — enables you to move between data measurements on the screen.
•[ESC] — enables you to exit menus or menu options at any time; cancels
a numeric entry.
•Red key [ ] — turns the power on or off, and toggles the backlight on
or off.