Alnor HM680, Owner'S Manual, Page: 11 / 40

5
Chapter 3. Getting Started
Keypad
Each key and its function is described below.
▲▼
The ▲ and ▼ keys are used to navigate through menus or to select an item to change. When entering
text, these keys change the highlighted letter/number.
◄►
The ◄ and ► keys are used to change the selected item. When entering text, these keys are used to
index the cursor to the desired location.
ESC
The
ESC
key is used to return to the previous screen or to cancel an operation without saving
changes made to displayed information.
The ENTER key is used to select a menu item, or to accept changes made within a menu item and
return to the previous screen. From either the Pressure or Flow Measurement screens, pressing the
ENTER key accesses the Main Menu.
READ
Pressing the
READ
key initiates taking a time-averaged reading based on the current time constant
setting. After taking the reading, the values are stored to memory (current Test ID) and displayed on
screen for a period of ten (10) seconds or until the
READ
key has been pressed again.
Press the BACKLIGHT key to turn the display’s backlighting on or off.
Note:
Backlighting has a significant impact on battery life. Use backlighting only when working in
areas where you cannot read the display with existing light.
DATA
Pressing the DATA key from either the Pressure or Flow Measurement screens provides access to the
Data Logging Menu.
PRESS
Pressing the PRESS key from the Flow Measurement screen provides access to the Pressure
Measurement screen.
ON/OFF
Press the ON/OFF key to turn the HM680 Hydronic Manometer on or off.
CALC
Pressing the
CALC
key from either the Pressure or Flow Measurement screens provides access to the
Calculations Menu.