12
8.2 Calculator with two flow sensors
MULTICAL® 601 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® 601, 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, the cable from one ULTRAFLOW® must be routed
through a Pulse Transmitter with galvanic separation before the cable enters
MULTICAL® 601.
• 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 our factory
guarantee.
ULTRAFLOW® 54
MULTICAL® 601
Electric coupling
ULTRAFLOW® 54
MULTICAL® 601
Pulse Transmitter
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