According to the documentation the max cable lengths for the sensors connected to a Multical device are :
Temperature sensors : 10m
Flow Sensor : 2,5m
Is it possible under any circumstances to extend the cable length up to 15m?
The sensors come in pairs and are calibrated. They must never be extended. The longest length available is 10 metres.
It is not possible to extend the cables to the sensors, as the devices are calibrated with the sensors delivered from the factory.