Micronics Portaflow 222, Руководство пользователя

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Portaflow 222 & 333 User Manual Micronics
Page 22 Issue 3.1 Feb 20
Primary Flow Se DD-MM-YY HH:MM:SS
->Display Total Both
Damping 10 sec
Signal-loss Timeout 3 sec
Flow Direction Normal
Exit
System Settings DD-MM-YY HH:MM:SS
Lock-screen Timeout 90 sec
Back-light mode ON
Back-light Timeout 75 sec
Set Date & Time..
->Reset Totals..
Damping 10 sec
Options DD-MM-YY HH:MM:SS
System..
Power..
Output..
Heat-Meter..
Logger..
->Primary Flow..
3.5 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:
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.
3.5.1 Calculating the average flow
To calculate the average flow wait for the allotted monitoring period to expire then divide the
indicated total flow by the time taken. This will give you the average flow in m/s, galls/hour or
whatever units you select.
Note that in a bi-directional flow situation you must calculate the difference between the indicated
positive and negative flow totals before carrying out the average flow rate calculation.
3.5.2 Resetting Totals
1. From the MAIN menu, use the Up and Down
arrow keys to select Setup Instrument . Press
the ENTER Key. With System selected in the
Options menu, press the ENTER Key.
Alternatively, from a
Read Flow/Velocity/Energy
screen, press the SYSTEM key (2). The System
Settings menu is displayed.
2. Select Reset Totals.. and press the ENTER key.
3.
Enter the code….