OTT ecoLog800 3G Groundwater System
Flexible communication
Complete in-well solution
weather applications supported water applications supported energy applications supported gas flux & turbulence applications supported infrastructure applications supported soil applications supported

Overview

The OTT ecoLog 800 3G is a self-contained system for the measurement of water level, temperature, and conductivity in groundwater and surface water applications. It features a complete in-well solution for groundwater measurement and flexible options for remote communications.  The OTT ecoLog800 is installed by simply hanging in an observation well with an inside diameter of 2 (5.08 cm) inches or greater.

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Benefits and Features

  • Remote data transmission via SMS, FTP, HTTP, or e-mail
  • Complete in-well solution where all components are inserted into the groundwater well
  • Battery life up to 10 years with lithium batteries, with alkaline options available. All batteries are field-replaceable without additional tools
  • Robust components deliver long-term measurement accuracy

Images


Specifications

General

  • Output parameters: Water level/pressure, temperature, specific conductivity, salinity, TDS
  • GSM/GPRS; UMTS/HSPA+
    • 900/1800, 850/1900 MHz;
    • 800/850, 900, AWS 1700, 1900, 2100 MHz
  • Antenna: Built-in; robust and weather-proof, external antenna optionally available (SMA-m)
  • Communication interface: Infrared (IrDA)
  • Measured value memory: 4 MB, approx. 500,000 measured values
  • Sampling/storage interval: 5 seconds … 24 hours
  • Installation: In observation wells from 2" on; multi-purpose suspension bracket and suspension brackets for OTT top caps (3", 4", 6") available as accessories
  • Operating temperature: - 30 °C … + 85 °C
  • Storage temperature: -40 °C … +85 °C

Water level measurement (pressure)

Measurement ranges

  • Measuring range: 0-4 m, 0-10 m, 0-20 m, 0-40 m, 0-100 m Water column
  • Resolution: 0.001 m / 0.1 cm / 0.01 ft / 0.1 inch / 0.0001 bar / 0.001 psi
  • Accuracy: ±0.05 % FS
  • Long-term stability: ±0.1 % / year FS
  • Units: m, ft, inch, bar, psi, Pascal

Temperature measurement

  • Measuring range: -25 °C … +70 °C
  • Resolution: 0.01 °C
  • Accuracy: ±0.1 °C
  • Units: °C, °F

Conductivity measurement

  • Measuring range 0 ... 2000 µS/cm
    • Resolution: 1 µS/cm
    • Accuracy: ±1 µS/cm or ± 0.5% of measured value (whichever is higher)
    • Units: µS/cm, mS/cm
  • Measuring range 0.1...100 mS/cm
    • Resolution: 0.01 mS/cm
    • Accuracy: ±0.01 mS/cm or ±1.5% of measured value (whichever is higher)
    • Unit: mS/cm

Power supply

  • Alkaline C cell: 2 x 1.5 V
  • Or lithium type: 1x 3.6 V/13 Ah
  • Or lithium type: 1x 3.6 V/26 Ah
  • Battery life (hourly measurement, one transmission/day)
      • Lithium battery (26 Ah): >10 years
      • Alkaline batteries: > 1 year

Dimensions L x Ø

  • Probe: 317 mm x 22 mm
  • Communication unit: 520 mm x 50 mm
  • System length: 2.0 … 200 m ±1% ±5 cm (cable length incl. communication unit and pressure probe)

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

Type of protection

  • Probe: IP 68
  • Communication unit: IP 67
  • EMC limits Acc. toEC 204/108/EC, ETSI EN 301 486-1/-7, EN 61326-1