The sound telephone system of the CNOOC 931 platform has been upgraded

The 'Offshore Oil 931' drilling platform is 109 meters long, 66 meters wide, 7.5 meters draft, and 146 meters high. The newly installed KS series marine passive sound enhancement telephone on the platform can be used as the ship's emergency communication liaison equipment without any external power supply, providing reliable communication for the platform in case of emergency. It has the characteristics of self-powered calls, low power consumption, anti-noise, transceiver display, etc.

Function description:
1 Direct way call
Establish mutual communication between pass-through sound telephones by pressing the call button or hand generator.
2 Strobe call
Mutual communication between the strobe and the pass-through acoustic telephone or between the strobe and the strobe acoustic telephone is established by pressing the call button or the hand-cranked generator.

3 Sound and light alarm
The marine sound phone is connected to an external flash bell splitter or flash bell set, which can emit an audible and light call signal when calling. When the other party calls the sound telephone of the external flash bell splitter and flash bell group, the flash bell splitter can provide 2 sets of intermittent alarm voltages (terminal blocks L1 and L2, terminal blocks S1 and S2, KL-1G provide DC24V voltage; KL-2G: AC220V) and passive intermittent alarm contacts (terminal blocks J1 and J2) for external bells to send out sound and light alarms, and the flash bell group should be able to emit intermittent call sound and light alarm signals and provide passive intermittent alarm contacts (terminal blocks J1 and J2) for external bells to send out sound and light alarms.
Technical Requirements:
1) The new sound telephone system needs to meet the following technical requirements:
a. ★ Passive sound enhancement: The sound power telephone does not need external power supply, only the electricity generated by the hand crank generator
The volume can be used for more than 10 minutes of voice telephone calls. The voice is clear and loud.
b. ★ Active call: connect to DC24V power supply, no need for a hand crank generator, press 'CALL'
key' to call.
c. Telephone ringing loudness: ≥85dB;