BioProTT
TM
Flow Measurement System
Version 1.00
page 44 of 75
shows 1 m³ and the totalizer will continue operating. The maximum digits for the m³
counter is 3 digits which corresponds to a maximum of 999 m³.
The totalizer has two limits. Either a totalizing time of 999:59.59 hours or a totalized
flow of 999 m³ 999.99 l. Whenever one of this limits is reached the Totalizer is
stopped and the string "OVR" (Overrun) is shown in the display. The values for
Totalizing Time and Total Flow are hold and shown on the display until the user
resets the totalizer.
When entering the totalizer screen the screen shows
o
"Hold" when the totalizer is running and
o
"Run" when the totalizer has not jet been started or stopped.
o
By pressing the enter key the user is able to start/stop the totalizer. Entering
other menus of the device while the totalizer is running will not have an
effect on the totalizer.
When the totalizer is running and the enter key is pressed the totalizer is stopped. The
display will show the value for the total flow at this point and indicate “Run” status.
Pressing the enter key again shall resume the totalizing progress starting with the
Totalizing Time and Total Flow before the stop. Additionally the Totalizing Time
value shall stop flashing.
While in the totalizer menu the totalizer is reset by pressing the Zero/Reset button.
The resetting can be performed while the totalizer is in the Hold or Run status. When
the totalizer is reset during run it continues working, starting with a zero value.
In case of insufficient low coupling (< 50%) during the run of the totalizer
an exclamation mark is shown next to the string "Total Flow" (Indication
for the user). During the time period of insufficient coupling the Totalizing
Time is stopped and the Total Flow value not changed (no further
summation).
If the coupling increases back to a “good” signal (value higher or equal to
60 %; e.g. after bubble has passed) the totalizing process resumes with the
values before the coupling drop. The exclamation mark shall stay on the
screen until the reset key is pressed.
If a Sensor is disconnected during the totalizer run an exclamation mark
next to the string "Total Flow" will be shown. During the period where no
sensor is connected the Totalizing Time is stopped and the Total Flow
value is not be modified (no further summation). If any sensor is
(re)connected the totalizer is reset and the exclamation mark is removed.