TECHNICAL DESCRIPTION
ULTRAFLOW
®
54 DN150-250
5512-876 GB/04-2012/Rev. F1
28
7.8
Calculator with two flow sensors
MULTICAL
602/801 can be used in various applications with two flow sensors, e.g. leak surveillance or open
systems. When two ULTRAFLOW
are direct connected to one MULTICAL
, a close electric coupling between the
two pipes ought to be carried out as a main rule. If the two pipes are installed in a heat exchanger, close to the
flow sensors, however, the heat exchanger will provide the necessary electric coupling.
•
Forward and return pipes are closely electrically coupled
•
No welded joints occur
In installations where the electric coupling cannot be carried out, or where welding in the pipe system can occur,
one ULTRAFLOW
must be mounted with a galvanically separated output module and also a supply of its own.
•
Forward and return pipes are not necessarily closely coupled
•
Electric welding
*)
can occur
*)
Electric welding must always be carried out with the earth pole closest to the welding point. Damage to meters
due to welding is
not
comprised by Kamstrup’s factory guarantee.
7.9
Testing the function
Carry out an operational check when the complete meter (flow sensor and calculator) has been installed and
connected. Open thermo regulators and cocks to establish water flow through the installation. Activate the top
key of the calculator and check that the displayed values for temperatures and water flow are credible values.