KROHNE Summit 8800 Vol 1 - Manual (Page 33)

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08/2013 - MA SUMMIT 8800 Vol1 R02 en
SUMMIT 8800 INSTALLATION AND REPLACEMENT 04
NOTE: Under CSA the correct battery type must be used.
4 .2 .6 Real time clock
The real time clock is powered by the backup battery. If the battery is replaced, make sure that
the time is set correctly afterwards.
The date and time can be set within “edit” mode on the SUMMIT 8800, if the “time” parameter
has been made available in the display by the integrator.
The same can be done from the Configurator within the general tab under date/time. See vol-
ume 2.
The accuracy of the clock is optimized for 20°C and deviates +/- 3 ppm/°C, (it is recommended
that the ambient temperature around the flow computer is maintained as close as possible to
20°C), it is therefore a good habit to synchronise the clocks.
The most effective way to synchronise the clock is by the network using a time server and SNTP.
It is also possible to synchronise via a supervisory system using Modbus.
Care should be taken using summer- and wintertime. Change-over will result in longer or
shorter days and associated different daily totals.