Seafloor Reference Pressure Recorder

• Paroscientific Digiquartz pressure sensor
• Internal control and recording electronics
• Internal memory
• Internal battery
• Option for acoustic modem, for data download during a survey

Benefits over other commercially available systems

• High-precision quartz sensors have shown best performance
• Small physical size eases the operations of deployment and recovery

• Unit height 359 mm
• Unit diameter 76.3 mm
• Frame height 500 mm
• Base plate diameter 450 mm
• Weight of unit in air 2.9 kg
• Weight including frame in air 12.6 kg
• Weight including frame in water 9.4 kg
• Weight including frame and acoustic modem in air ca. 24 kg
• Weight including frame and acoustic modem in water ca. 15 kg
• Depth rating of unit is 2600 m
• Pressure sensor type Paroscientific Digiquartz
• Depth rating of sensor 680m, 1370, 2060 m or 2750 m
• Sampling interval 10 – 100 s
• Integration length 10 – 100 s
• Memory capacity 2 GB, 500+ years at 100 s
• Battery life 3 months for alkaline 2 years for lithium