AIR HORN CLASS 1

The air whistle 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 air whistle will operate on air pressures 7 bar. For electric release and operation of the heating a connection to AC220V power supply is required. The air filter protect the diaphragm from dirt and damage

CLASS 1 :: SHIP LENGTH 200M OR MORE

AIR HORN CLASS 2

CLASS 2 :: SHIP LENGTH 75M BUT LESS THAN MORE

AIR HORN CLASS 3

CLASS 3 :: SHIP LENGTH 20M BUT LESS THAN 75M

ELECTRIC HORN CLASS I / CLASS II

The electric whistle is driven by an AC 3phase motor. An essential component is the piston inside the cylinder driven by an AC3phase motor via connecting rod, crankshaft and gearwheels. The piston oscillates at a certain frequency which makes the air inside the sound projector vibrate in resonance to produce a sound. When electrical power is supplied to relay box of whistle system as AC3phase, its motor is kept heating status always except operating. If the motor is operating, heating mode will be paused. Grease is used to decrease made high-temp. and reduce friction in operating. It is drained as gas through shaft, piston and horn.

CLASS 1 :: SHIP LENGTH 200M OR MORE

CLASS 2 :: SHIP LENGTH 75M BUT LESS THAN 200M

ELECTRIC HORN CLASS III

CLASS III :: SHIP LENGTH 20M BUT LESS THAN 75M