7
Operating instructions digital oval gear meter
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4. Installation
The inlet and outlet of the meter are aligned in a straight axis and equipped with 1“ threads. The meter
may be installed in any given position, as a fixed unit in a pipeline and/or as a mobile unit on a spigot.
The meter does not have a pre-defined flow direction. Both ends may alternatively serve as inlet or outlet,
as needed. However, it is absolutely important that the side that is used as inlet (where the pipeline arrives)
is equipped with a filter with suitable performance characteristics. If solid particles get into the measuring
chamber this can result in the oval gear blocking.
5. Routine operation
The oval gear meter comes pre-assembled and ready to go.
Even after periods of prolonged storage, it will be ready for operation without any lengthy preparations.
The only manoeuvre that may be necessary from time to time during normal operation is to reset the
registers of partial and/or resettable total volumes.
To accomplish that, call up the two displays for normal operation. The first normal operation display
contains the partial volume and resettable total volume (RESET TOTAL). The other display shows the
partial volume and the non-resettable (absolute) total volume. The LCD switches between resettable and
absolute total automatically. This has been set at the factory and cannot be influenced by the user.
Register of
RESETTABLE
TOTAL VOLUME
Register of
ABSOLUTE
TOTAL VOLUME
Register of partial volume
The register of the absolute total (Total) cannot be reset by the user. It will continue counting during the
entire lifetime of the meter. The resettable and non-resettable registers of total volumes (Reset Total and
Total) share the same ‚window‘ and the same digits of the LCD display. For that reason, the two numbers
cannot be viewed at the same time.
The meter has been programmed so that the one or the other total is visible at certain moments / in
certain modes during operation (never both at a time):
The absolute total volume (
■
■
TOTAL) is visible in standby mode.
The resettable total (Reset Total) is visible at the following times / in the following modes:
■
■
- For a short moment (several seconds) after resetting the (resettable) partial volume.
- During the output of liquid.
For a few seconds after the output of liquid. As soon as this time span is over, the meter will switch back to
standby mode, and the display of the lower register will show the absolute total.
Tip
For the display of total volumes, there are 6 digits available, plus two icons x10 / x100.
The increments are activated in the following sequence:
0,0 ---> 99999,9 ---> 999999 ---> 100000 x10 ---> 999999 x10 ---> 100000 x100 ---> 999999 x100
