Art. 79842-N-2
Als Option kann die manuelle Umschaltung mit einer optischen oder akustischen Leerstandsanzeige ausgerüstet werden, welche einen Leerstand der entsprechenden Rampenseite anzeigt.
Operating mode:
On emptying the cylinders, an alarm is activated on the signal box when the pressure which was preset on the contact gauges (which are mounted on the high pressure side of the central pressure regulators) falls below this level. The alarm is visual (with a LED per cylinder side) and acoustic. With the reset button the reception of the empty indication is confirmed. The LED of the empty side continues to glow and extinguishes only after the cylinders have been replaced. Furthermore there are contacts for a remote acknowledgement and an external signal.
Empty indicator standard:
for 2 contact gauges Art.79842-N-2
for 4 contact gauges Art.79842-N-4
for 6 contact gauges Art.79842-N-6
Empty indicator explosion protected:
for 2 contact gauges Art. 79842-N-2-F
for 4 contact gauges Art. 79842-N-4-F
for 6 contact gauges Art. 79842-N-6-F
For versions for fuel gases and installations in ex zones all components must be protected against explosion in accordance with Swiss safety prescription SEV and SUVA. Thereby a limitation of current and tension in the form of a Zener barrier has to be installed between the empty indicator and each individual contact gauge. The installation of the Zener barrier has always to be made outside the ex zone.