KROHNE Summit 8800 Vol 2 - Manual (Page 97)

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08/2013 - MA SUMMIT 8800 Vol2 R02 en
SUMMIT 8800 STREAM CONFIGURATION 06
6 .5 Tariff
Liquid Gas Steam
Customers must often pay a different tariff depending on the flow rate. For instance a standard
tariff will be charged up to a certain level, above that twice as much has to be paid until a second
level after which 10 times as much must be paid. This is done by sellers to limit the total flow
through a pipeline and therefore being able to use a smaller sided pipe than needed otherwise.
A customer likes to have a clear overview of the totals within each regime and have an indication
when a level is exceeded to be able to shut down parts of his plant..
The tariff option is designed for this and has a maximum of 4 levels.
Figure 89 Tariff selection
The first option is to select what parameter which flow rate is used for the tariff. Mostly this will
be volume, but it might also be mass, energy of CO2. The tariff system will always be based on
hourly flow rate, but will react immediately.
Then for the first 3 levels their maximum flow can be set.
The tariff counters and increments will now be used depending of the tariff band it is in:
• Level 1 will always be counting but is limited to the Level 1 Max Value
• Level 2 will start counting the additional flow when the flow rate is above Level 1 Max Value
with a maximum of Level 2 max minus Level 1 max.
• Level 3 will start counting the additional flow when the flow rate is above Level 2 Max Value
with a maximum of Level 3 max minus Level 2 max.
• Level 4 will start counting the additional flow when the flow rate is above Level 3 Max Value.
The hardware pulse outputs can be configured to for the 4 level tariff flow rates:
Figure 90 Tariff flow rate output