Automated systems require the switching of heaters, pumps, valves, thermostats or other external devices. This requires the use of relays to switch mains or low-voltage supplies on and off as necessary. The switching should take place via remote lines from a Titrino, Titrando, sample changer or other Metrohm instrument. The Relay Box meets all these requirements on a very small footprint.
The Relay Box provides four voltage outputs. Two 115/230 V AC outputs are used for switching the mains voltage. The maximum power delivery per output is 1150 W, so that the instrument can also be used for providing power to high-consumption devices such as heating baths or thermostats.
In addition the Relay Box has two DC outputs, whose voltages can be set to 5, 10, 18 or 24V.
Various Metrohm devices can address the Relay Box via their remote lines. Regardless of the type of device, a single standard cable is all that is required for communication. The Relay Box scans the 14 input lines and switches the assigned voltage outputs accordingly.