For monitoring small and medium, non-aggressive liquid quantities in pipelines with a diameter of 1″. The device does not require a supply voltage. Installation: Vertically in a horizontal pipe. Calming distance at least 5 times the pipe diameter upstream and downstream of the paddle. Installation/fastening is carried out using a G 3/8″ union nut on a soldering socket (for soldering into a standard copper T-piece with 1/2″ outlet) or T-piece. Not tested for drinking water. Switching point falling 13.5 … 16.5 l/min, switching point rising 17.0 … 20.5 l/min, switching differential 3.5 l/min. Accuracy ±15 % of the set target value (switching values only apply when the flow monitor is installed in our T-piece. The switching values increase when copper T-pieces are used).