KROHNE Summit 8800 Vol 2 - Manual (Page 69)

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08/2013 - MA SUMMIT 8800 Vol2 R02 en
SUMMIT 8800 HARDWARE DETAILS 05
A density can also be read serially via a modbus slave link for instance from a SCADA system.
See volume 3 for details how to configure a modbus slave.
Figure 57 Density serial input selection
In certain meters, such as in the Coriolis meter, there is also the meter density. If this is includ-
ed in the modbus master protocol of that meter, the same variable as for modbus slave is used.
So although this is a fixed protocol which cannot be changed, the serial density can then still be
used.
5 .2 .5 Density transmitter temperature and pressure
The density of both gases and liquids depends on the pressure and temperature of the fluid, and
hence must be correct for base conditions.
The SUMMIT can use the same temperature and pressure as selected for the stream or specifi-
cally for the use of density effects only.
Solartron and Sarasota transducers have unique temperature and pressure points assigned to
them. For each of them 2 different temperature and pressure inputs can be assigned for correc-
tion:
Figure 58 Density temperature and pressure input selection