7 Instruction Manual
parameters configured last time by the user or by the initial program.
The flow measurement program always operates in the background of the user interface.
This means the flow measurement will keep on running regardless of any user menu
window browsing or viewing. Only when the user enters new pipe parameters will the flow
meter change measurement to the new parameter changes.
When new pipe parameters have been entered or when the power has just been switched
on, the flow meter will enter an adjusting mode to make the signals magnified with proper
amplification. By this step, the flow meter is going to find
the best threshold of receiving
signal. The user will see the progress by the number 1, 2, or 3, which are indicated on the
right lower corner of the LCD display.
When the transducers have been adjusted on the pipe by the user, the flow meter will
re-adjust the signal automatically.
Any user-entered configuration value will be retained into the NVRAM of the flow meter,
until it is modified by the user.
2.3 Keypad
The keypad for the operation of the flow meter has 16+2 keys, as shown by the right
picture.
Keys 0 ~ 9 and . are keys to enter numbers
Key
▲
/+ is the going UP key, when the user wants to go to
the upper menu window. It also works as the “+” key when
entering numbers
Key
▼
/- is the going DOW N key, when the user wants to go
down-sided menu window. It also works as the “–” key when
entering numbers.
Key
◄
is backspace key, when the user wants go left or
wants backspace the left character that is located to the left of
the cursor.
Key ENT is the ENTER key for any inputting or selections.
Key MENU is the key for the direct menu window jump over.
Whenever the user wants to proceed to a certain menu window, the user can press this key
followed by 2-digit numbers.
The MENU key is shortened as the ‘M’ key afterward when referring to the menu windows.
The ON key is for the power on.
The OFF key is for the power off.
