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FDT-25 Handheld Ultrasonic Flowmeter
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(2) Pressing
and
keys. Each time of the
key pressing will proceed to the lower-numbered
menu window. For example, if the current window is on M12, the display will go to the number
M11 window after pressing the
key.
There are three different types of menu windows:
(1) Menu windows for number entering, like M11 for the entering of pipe outer diameter.
(2) Menu windows for option selection/selecting options, like M14 for the selection of pipe materials.
(3) Displaying windows only, like M00 to display Velocity, Flow Rate etc.
For number entering windows, the user can directly press the starting digit key when the user is
going to modify the value. For example, when the current window is on M11, and the user is going
to enter 219.2345 as the pipe outer diameter, the user can get the numbers entered by pressing the
following serial keys: 2
－ 2 3 4 5 ENT .
For the option selection windows, the user should first press the ENT key to a selection modification
mode and then select the relevant options by pressing the
and
keys or the digit keys to
select the option with a number antecedent to the option. In the end, the ENT key must be pressed
to make the selection. For example, with menu window M14 for the selection of pipe material
selection, (the MENU 1
should be pressed first to enter this menu window if the current menu
window is on a different window. The pipe material is stainless steel which has a number “1”
antecedent to “stainless steel” on the display, the user should first press the ENT key to enter into a
selection modification mode, then either make the selection by pressing the
and
keys to
make the cursor on the line that displays “1. Stainless Steel”, or make the selection by pressing the
1 key directly.
Generally, the ENT key must be pressed to enter a modification mode. If the “Locked M47 Open’
message is indicated on the lowest line of the LCD display, it means the modification operations is
locked out. In such cases, the user should go to M47 to have the instrument unlocked first before
any further modification can be made.
§2.5 Menu Windows Arrangement
M00～M09 windows for the display of the flow rate, velocity, date time, totalizers, battery voltage
and estimated working hours for the battery.
M10～M29 windows for entering the pipe parameter.
M30～M38 windows for flow rate unit selections and totalizer unit selections.
M40～M49 windows for response time, zeroing, calibration and modification password setup.
M50～M53 windows for the built-in logger
M60-M78 windows for time-keeper initialization, version and ESN information viewing and alarms.
M82
window for viewing date totalizer.
M90～M94 are diagnostic windows for a more accurate measurement.
M97～ M99 are not windows but commands for the outputting of display copying and pipe parameter setups.
M+0～M+8 are windows for some additional functions, including a scientific calculator, viewer on
records such as total working hours, turn-on and turn-off times, dates and times when the flow meter
has been turned on or turned off.
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