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OTT ecoLog 800 Water Level Logger

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OTT ecoLog 800 Water Level Logger

    • Remote data transmission: receive data, status messages, and low power warnings from the office via SMS, FTP, HTTP, and e-mail, eliminating field visits for data download and troubleshooting
    • Complete in-well solution: all components are inserted into the groundwater well, eliminating the possibility of instrument vandalism
    • Battery life: up to 10 years with lithium batteries, alkaline options are also available. All batteries are field-replaceable without additional tools
    • Long-term accuracy: a robust ceramic pressure cell will not deform over time, and an accurate 4-electrode conductivity measuring cell provides outputs for salinity and total dissolved solids (TDS)
    • User-friendly interaction: only one program required to setup unit and download data, plus a simple infrared communication interface that provides easy on-site data download

    Continuous or real-time water level, temperature, and conductivity measurement of:

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

    Ideal for monitoring:

    • Continuous water level / water quality networks
    • Short-term or long-term projects
    • Salt water intrusion
    • Aquifer storage and recovery

    Water level measurement  
    Measuring range 0 …… 4 m, 10 m, 20 m, 40 m, 100 m
    Accuracy ±0.05 % FS
    Long-term stability ±0.1 % / year FS
    Resolution 0.001 m / 0.1 cm / 0.01 ft / 0.1 inch / 0.0001 bar / 0.001 psi
    Units m, ft, inch, bar, psi, Pascal
    Temperature measurement  
    Measuring range -25 °C …… +70 °C
    Accuracy ±0.1 °C
    Resolution 0.01 °C
    Units °C, °F
    Conductivity measurement  
    Measuring range 0 … 2000 µS/cm
    Accuracy ±1 µS/cm or ±0.5 % of measured value (whichever is higher)
    Resolution 1 µS/cm
    Units µS/cm, mS/cm
    Measuring range 0.1 … 100 mS/cm
    Accuracy ±0.01 mS/cm or ±1.5% of measured value (whichever is higher)
    Resolution 0.01 mS/cm
    Unit mS/cm
    Electrical data  
    Power supply  
    Alkaline C cell 2 x 1.5 V
    Or lithium type 1 x 3.6 V/13 Ah
    Or lithium type 1 x 3.6 V/26 Ah
    Battery life (hourly measurement, one transmission/day)  
    Lithium battery (26 Ah) >10 years
    Alkaline batteries > 1 year
    Modem GSM Standard 850/900 MHz, 1800/1900 MHz, GSM (Quadband), GPRS
    Antenna Built-in; robust and weather-proof, external antenna optionally available (SMA-m)
    Communication interface Infrared (IrDA)
    Data logger  
    Measured value memory 4 MB, approx. 500,000 measured values
    Sampling/storage interval 5 seconds … … 24 hours
    Installation ≥ 2″
    System length 2.0 m …… 200 m ±1% ±5 cm (cable length incl. communication unit and pressure probe)
    Dimensions L x Ø  
    Probe 317 mm x 22 mm
    Communication unit 520 mm x 50 mm
    Weight  
    Probe Approx. 0.43 kg
    Communication unit Approx. 0.92 kg (incl. batteries)
    Housing material  
    Probe Stainless steel (DIN 1.4539, 904 L?)
    Communication unit Aluminium, PA-GF
    Environmental conditions  
    Operating temperature -30 °C … +85 °C
    Storage temperature – 40 °C …… + 85 °C
    Type of protection  
    Probe IP68
    Communication unit IP67
    EMC limits Acc. toEC 204/108/EC, ETSI EN 301 486-1/-7, EN 61326-1

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