OTT HydroMet

- Model Orpheus Mini - Water Level Logger

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The OTT Orpheus Mini is an integrated pressure sensor and datalogger for level measurement in surface and groundwater applications. It features a robust ceramic measuring cell for long term accuracy and its built in datalogger manages and stores all measurements at user-programmable intervals. The Orpheus mini can be paired with the OTT ITC for remote data transmission.

  • Application: Surface water, Groundwater
  • Measurement technology: Vented pressure cell
  • Parameters measured: Waterlevel/Pressure, Water temperature
  • Product Highlights: Measures and stores water level and temperature data
  • Measurement range: 0 … 4, 10, 20, 40, and 100 m
  • Accuracy: ± 0.05% FS
  • Internal data logger: Yes

  • Accurate– Ceramic pressure cell, unlike membrane technology, will not deform over time providing long-term measurement stability
  • High Performance– Mechanical resistance to pressure overload and corrosive waters
  • Complete Solution– Pressure sensor with built-in data logger manages and stores pressure, depth to water, water level (stage), and/or temperature measurements at programmable intervals
  • Flexible Installation– Easily installs in wells or pipes of 1 in. diameter or larger with use of convenient adapter plates
  • Simple Maintenance– Infrared interface, batteries, and desiccant are accessible at the top of the well or pipe and no tools are required

For continuous or continuous real-time water level measurement of:

  • Streams, rivers, channels, or canals
  • Groundwater wells
  • Reservoirs, lakes, and wetlands

Ideal for Monitoring:

  • Continuous water level networks
  • Short-term or long-term
  • Events
  • Pump tests
  • Landfill groundwater levels

  • Waterlevel measurement :  
    • Measuring ranges : 0 ... 4 m, 10 m, 20 m, 40 m, 100 m
    • Accuracy, pressure sensor : ± 0.05 % FS
    • Resolution, pressure sensor : 0.01 % FS
  • Temperature measurement :  
    • Measuring range temperature : -25 °C ... +70 °C (ice-free)
    • Accuracy temperature : ± 0.5 °C
    • Resolution temperature : 0.1 °C
  • Electrical Data :
    • Power supply : 3 x 1.5 V LR6-cells Alkaline- or Lithium-type
    • Lifetime (at 1 h reading interval) :  
    • with Lithium batteries : min. 5 years
    • with Alkaline batteries : min. 1.5 years (high quality battery types)
    • Interface : Infrared (IrDA)
  • Data Logger : 
    • Memory : 4 MB non-volatile
    • Number of measured values : approx. 500,000
    • Reading interval : 1 second ?... 24 hours
    • Storage interval : 1 second ...? 24 hours
    • Logging type - selectable : linear, logarithmic - free progammable (logging table) for pumping tests , event triggered delta data logging
    • Installable in well pipes : ≥ 1'
    • System length : 1.5 ... 200 m ±1% ±5 cm (cable length incl. communication unit/pressure probe)
    • Material : ABS, POM, 904 L (DIN 1.4539)
  • Weight :  
    • Communication unit (incl. batteries) : approx. 0.410 kg
    • Pressure probe : approx. 0.300 kg
  • Dimensions :  
    • Communication unit L x Ø : 400 mm x 22 mm
    • Pressure probe L x Ø : 195 mm x 22 mm
  • Operating Conditions :  
    • Temperature-compensated working range : -5 °C ... +45 °C (ice-free)
    • Storage temperature : -40 °C ... +85 °C
    • Operating Temperature : -20 °C ... +70 °C
    • Humidity : 100 %
  • Type of protection :  
    • Communication unit : IP67 (immersion depth max. 2 m
    • duration of immersion max. 24 h)
    • Pressure probe : IP68
    • EMV limits : IEC61326/EN61326 are compliant with EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN 550222 class B

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