TG-11

Stand-alone seafloor reference pressure recorder (tide gauge) with internal battery and memory.
Quad Geometrics

System features

  • 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

Specifications

  • 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
TG-11 tide gauge with acoustic modem for real-time communication during a survey.