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Operation of the device
For example, if the display reads 1.0109E5 l/min, this represents 101,090 l/min (1.0109 × 100,000). Note the number of zeros in
the multiplier corresponds to the number following the E on the display. Alternatively, you may select another unit by pressing the
UNITS (7) key. With units of l/sec, the previous example would read 1684.8 l/sec, hence scientific notation would not be required.
There are no limitations on the use of these larger flow values with regards to logging of data and setting the current and digital
outputs. Values are automatically saved in scientific form in any case.
8.1.4
Flow / energy / velocity monitoring
From the READ FLOW, READ ENERGY or VELOCITY screen you can:
•
Switch to the Read Energy display by pressing key 9.
•
Switch to the Read Velocity display by pressing key 4.
•
Switch back to the Read Flow display by pressing key 8.
•
Switch between valid screens every 10 seconds by briefly pressing key 0. Pressing 0, 4, 8 or
9 stops this action.
•
Enter the zero-flow screen by a long press of the 0 key.
•
Change the display units by pressing key 7.
8.1.5
Total flows
The basic measurement indicated on the READ FLOW screen is the instantaneous flow rate, which in some applications may vary
over a period of time. Average flow rates are therefore often required in order to get a better understanding of an application's
true performance. This is simply achieved by noting the total flow over a specific period (for example 30-60 minutes) and then
calculating the average flow rate over that period of time. By default, the READ FLOW screen shows both the forward and reverse
flow totals.
To change the totals display:
Options
System..
Power..
Output..
Heat-Meter..
Logger..
- > Primary Flow..
Primary Flow Se
- > Display Total
Dampling
Signal-loss Timeout
Flow Direction
Exit
30
DD-MM-YY
HH:MM:SS
OK
OK
OK
OK
OK
OK
DD-MM-YY
HH:MM:SS
Both
10 sec
3 sec
Normal
1.
From the Main menu, use the Up and Down scroll keys to
select Setup Instrument. Press the ENTER Key.
2.
Use the UP/DOWN arrow keys to select Primary Flow;
press the ENTER Key. The Primary Flow screen is
displayed.
3.
Select Display Total and press the ENTER key. Use the UP/
DOWN arrow keys to scroll through the available options:
Both / None / Fwd Total / Rev Total.
4.
With the required display option selected, press the ENTER
key.
5.
Select Exit and press the ENTER key to return to the
Options menu.
6.
Select Exit and press the ENTER key to return to the MAIN
menu.
Operating Instructions
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