General Features
The ZÖLLNER MAKROFON  is a diaphragm sound transmitter operating on compressed air. The signal is released by an electromagnet or manually using a hand pull-rope. To avoid the costly laying of a pull-rope, a second electromagnet for emergency voltage can be provided. A thermostat controlled anti-condensation heating keeps the sound horn and the operating valve free from condensed water and thus from ice. Typically the MAKROFON  will operate on air pressures between 7 and 40 bar. For electric release and operation of the heating a connection to AC 1phase(115V/230V) or 24 V DC power supply is required.

Essentials
  • full compliance with the Colregs 1972, Annex III
  • type approved by all wellknown international authorities and classification societies
  • application:
    • vessels of class I,II,III and IV 
    • land alarm, i.e. bunker stations, oil refiner ies, airports, power plants, factories
    • EEx Zone 1 and 2 are also available  
  • compressed air requirement: 7-40 bar free, dry air (carbonic acid etc. may also be used)
  • system voltage: AC 1phase(115V/230V) or 24 V DC

Advantages

  • decades of experience
  • best material and workmanship - made in Germany
  • entirely made of best non-corrosion, seawaterresistant materials
  • sound horn made of aluminium, copper or stailess steel (not plastic!)
  • simple but matured design, almost maintenance-free
  • easy exchange of all parts with onboard tools
  • easy installation
    • relatively low weight