MAKROFON ZM200/90b-110b ZVE(E)(H) The ZÖLLNER MAKROFON ZM200 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 ZM200 will operate on air pressures between 7 and 40 bar. For electric release and operation of the heating a connection to 230 or 115 V AC 1phase or 24 V DC power supply is required. Essentials » full compliance with the COLREG 1972 Annex III » type approved by all wellknown international authorities and classification societies Application: » vessels of class I (200 m or more in length) » land alarm, i.e. bunker stations, oil refineries, airports, power plants, factories Advantages » decades of experience » best material and workmanship - made in Germany » entirely made of best non-corrosion, seawater resistant materials » sound horn made of sheet-aluminium (not plastic!) » simple but matured design, almost maintenance-free: easy exchange of all parts with onboard tools » easy installation - relatively low weight Sound Characteristics » broad frequency spectrum with many higher harmonics » signals with strong over tones for best penetration of background noise level. Even when a background noise covers the actual basic frequency the residual tone forms a parent frequency in the human hearing. Two or three harmonics are sufficient for the hearing to perceive the basic frequency. » sound frequency of 90 /110 Hz very advantageously ranks in the lower admissable range (70-200 Hz) » sound pressure level 143 dB in 1/3rd-octave band level at

Technical information Positioning as high as practicable on the vessel to reduce interception of the emitted sound by obstructions and to avoid hearing damage risk to the personnel. The sound pressure level of a vessel’s own signal at listening posts must not exceed 110 dB(A). 36 Installation - compressed air supply pipe preferably of copper with a filter (type F2) preceding the Makrofon operating 11 10 9 8 7 6 5 4 146 1 2 3 4 5 6 11 9 6 5 4 valve. Supply pipe must 10 free from any dirt particles8and moisture. 7 be main current emergency current heating tension valve 1 heating thermostat valve...