HYDROMETER HYDRUS Instrucciones De Instalación Y Funcionamiento página 18

English
INTERFACES
The meter is equipped with various communication interfaces
depending on the variant selected:
· Optical (standard)
· Radio 434/868 MHz
· Radio 868 MHz / L-Bus
· Radio 434 MHz / L-Bus
· L-Bus / pulse
· Pulse output
The Communication Description of the interfaces is available on
the Internet at www.hydrometer.de.
INSTALLATION OF NON-RETURN VALVE
The meter can be supplied with a non-return valve (accessory)
on request.
The non-return valve must be mounted in the meter outlet as
shown in Fig. 1 for meters with a nominal diameter of DN15 or
Fig. 2 for meters with a nominal diameter for DN20 and DN40
or larger.
For meters with a nominal diameter of DN 25/32, a compensa-
ting ring must be used to centre the non-return valve. (Fig. 3)