GF PORTAFLOW 330, Инструкция по эксплуатации

Страница: 31 / 56

Operating Procedures Instruction manual
30
1. Press the Options key to access the FLOW
READING OPTION screen shown.
2. If the Totaliser is indicating Run, select it and
change it to Stall. Press the ENTER key.
3. Select Reset +Total and press the ENTER key.
4. Press the ENTER key on the subsequent
screen to accept the reset.
5. Press the ENTER key again to return to the
FLOW READING OPTIONS menu.
6.
Select Reset –Total and press the ENTER key.
7. Press the ENTER key on the subsequent
screen to accept the reset.
8. Press the ENTER key again to return to the
FLOW READING OPTIONS menu.
9. Note and record the current time.
10. Select Totaliser and change it to Run. Press
the ENTER key. Note: the totalisers begin to
count up as soon as Totaliser is put to Run.
11.
Scroll down and select Exit to return to the
FLOW READING screen which will now
indicate the instantaneous flow together with
the totalised flow.
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.
How to stop the totaliser temporarily
If you want to stop the totaliser temporarily for operational reasons, set the Totaliser option to
Stall in the FLOW READING OPTIONS screen as described above. This will stop the totaliser
operation without affecting its current values.
7.6.2 How to set up the basic logging application to memory
This procedure shows you how to set up a basic logging session under manual start/stop
control. The logged data is saved to the instrument’s memory and can be downloaded to a
USB memory key at a later time.