11
UK
3.3 Consumed quantity monitoring
The unit has an internal quantity meter (totaliser)� It continuously sums up the
consumed quantity and provides this process value on the display�
3.3.1 Meter reading
The current quantity meter count can be indicated (→ 7.1).
In addition, the value before the last reset is saved� This value and the time since
the last reset can also be displayed (→ 7.1).
The meter saves the totalled volumetric flow quantity every 10 minutes�
After a power failure this value is available as the current meter reading� If a
time-controlled reset is set, the elapsed time of the set reset interval is also
saved� So the possible data loss can be at most 10 minutes�
3.3.2 Counter reset
The setting of the parameter [rTo] defines by which method the quantity meter is
reset:
[rTo]
Counter reset
OFF
(→ 9.3.3)
The preset counter is only reset
-
when a manual reset is made (→ 10.3.1) or
-when the maximum display range has been exceeded (99�999�999)�
1, 2,��� h
1, 2,��� d
1, 2,��� w
(→ 9.3.2)
The preset counter is automatically reset when the time has elapsed and
the count starts again (→ 9.3.2 Time-controlled counter reset).
The accuracy of the consumed quantity measurement depends on the
accuracy of the flow measurement�
