Novega PT9 Ninety hydroacoustic transducer for VDR

Novega PT9 Ninety is a hydroacoustic VDR sensor developed in accordance with the new IMO standards (IMO Resolution MSC.333 (90): on ships built from July 1, 2014, underwater positioning devices must provide the standard transmission time at least 90 days). The sensor is activated when it enters the water and sends signals remaining operational for 90 days, even at depths from 0.15 m / 0.5 ft to 6096 m / 20,000 ft for 4 hours after immersion in both sea and fresh water.

Specifications:

• Minimum performance standards: SAE AS8045A and IEC 61996-1 (2013-05) Ed. 2.0 - This standard includes the applicable parts of the performance standards included in IMO Resolution MSC.333(90).
• Dimensions: Length 98 mm (3.85 in), diameter 33 mm (1.3 in), similar to PT9 C-Proof
• Weight: 187g (6.6oz)
• Power supply: Autonomous lithium battery (field replaceable). No shipping restrictions (UN3091 / PI970)
• Actuation: Automatically using both fresh and salt water at all depths from 0.15 m / 0.5 ft to 6096 m / 20,000 ft within 4 hours of the dive.
• Operating Depth: Surface up to 6,096 m / 20,000 ft
• Operating temperature: -2°C (28°F) to +38°C (100°F).
• Radiation pattern: 80% spherical pattern
• Working frequency: 37.5±1KHz
• Pulse Width: 9.0 ms minimum.
• Repetition rate: minimum 0.9 pulse/s
• Service life: 90 days
• Initial operation: 106 N/m2 (1060 dynes/cm2), mm.m. (during pulse) normalized in the range of 1 m, i.e. at 160.5 dB vs. 1 µPa at 1 m. Immediately after 90 days of continuous operation: 70 N/m2 (700 dynes/cm2), mm.m. (during the pulse) normalized at 1 m, i.e. at 157 dB versus 1 µPa at 1 m