Stevens Water Monitoring Systems, Inc.

- Model Cera-Diver - Pressure Transducer with Integrated Logger

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The ceramic Cera-Diver is designed specifically for monitoring groundwater in potentially corrosive conditions, such as brackish water and seawater.

The Cera-Diver is available in four ranges for monitoring the following depths:

  • 0 - 33 ft (0 - 10 m)
  • 0 - 66 ft (0 - 20 m)
  • 0 - 164 ft (0 - 50 m)
  • 0 - 328 ft (0 - 100 m)

Measuring 3.54 inches (90mm) in length and 0.86 inches (22mm) in diameter, this highly reliable and compact Diver registers groundwater levels with an accuracy of 0.05% (Full Scale). It is equipped with a memory capable of storing 48,000 measurements per parameter. This is sufficient enough to perform one measurement every ten minutes for an entire year.

  • Power:
    • Internal Battery, 10-year life with 'typical' use
    • 5 million measurements
    • 2,000 readout cycles
    • 2,000 programming cycles
  • Sample interval: 0.5 seconds to 99 hours
  • Data output options:
    • SDI-12 when connected to Diver-DCX converter box
    • Manual data download using USB interface cable connected to computer
    • Manual data download using 'Diver Mate' or 'Diver USB Reading Unit' accessories
  • Conductivity Measurement:
    • Range: 10 µS/cm to 120 mS/cm
    • Accuracy: ± 1.0% of reading
    • Resolution: ± 0.1% of reading
  • Operating temperature, compensated: 32 °F to 122 °F (0 °C to 50 °C)
  • Temperature accuracy: ± 0.18 °F
  • Temperature resolution: 0.018 °F
  • Wetted parts materials:
    • Housing: ceramic (ZrO2)
    • O-rings: Viton®
    • Pressure sensor: ceramic (AI2O3)
    • Cap / nose cone: Nylon PA6 30% glass fiber
  • Physical size: 3.54 in (L) x Ø 0.86 in (90 mm x Ø22 mm) including suspension eye
  • Weight: 1.94 oz (55 grams)

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