OTT HydroMet

- Model ecoLog 500 - Water Level Logger

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The OTT ecoLog 500 is a complete system for water level and temperature measurement. Designed for full deployment inside groundwater wells as well as surface water applications, the OTT ecoLog 500 offers data and alarm message transmission options via SMS, HTTP, FTP and e-mail, giving users flexible remote data access from their office.

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

  • 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 durability: a robust ceramic pressure cell, kevlar-reinforced cable, and high-quality 904 L stainless steel housing provide lasting quality
  • 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 measurement of:

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

Ideal for monitoring:

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

  • Water level measurement:
    • Measuring ranges: 0 ... 4 m, 10 m, 20 m, 40 m, 100 m
    • Pressure resolution: 0.01 % FS
    • Pressure accuracy: ±0.05 % FS
    • Long-term stability: ±0.1 % / year FS
  • Temperature measurement:
    • Measuring range: -25 °C ... +70 °C
    • Temperature resolution: 0.1 °C
    • Temperature accuracy: ± 0.5 °C; higher accuracy optionally available
  • Electrical data:
    • Power supply: 2 x 1.5 V C Alkaline cells (only for version with GSM/GPRS-Modem)
    • Lithium cells, 3.6 V/13 Ah or
    • Lithium cells, 3.6 V/26 Ah
  • Battery life @ 1 h measurement interval & one transmission per week
    • Lithium-battery, DD: approx. 10 years
    • Alkaline batteries, CC (only for version with GSM/GPRS-Modem): > 1 year
  • Modem: GSM/GPRS 900/1800, 850/1900 MHz
  • GSM/GPRS; UMTS/HSPA+ 900/1800, 850/1900 MHz; 800/850, 900, AWS 1700, 1900, 2100 MHz
    • Antenna: Built-in, weather-proof, external antenna optionally available
    • Interface at site: Infrared (IrDA)
  • Memory: 4 MB, approx. 500,000 measured values
    • Sampling/storage interval: 5 seconds ... 24 hours
  • Installation: ≥ 2'
  • Environmental conditions:
    • Operating temperature: -30 °C ... + 85 °C
    • Storage temperature: -40 °C ... + 85 °C
  • Dimensions L x Ø:
    • Communication unit: 520 mm x 50 mm
    • Probe: 195 mm x 22 mm
    • System length: 2 ... 200 m ±1 % ±5 cm
    • (Cable length incl. communication unit and pressure probe)
  • Material:
    • Communication unit: Aluminium, PA-GF
    • Sonde: Stainless steel (DIN 1.4539, 904 L )
  • Weight:
    • Communication unit (w/o. batteries): approx. 0.920 kg
    • Probe: approx. 0.300 kg
  • Type of protection:
    • Communication unit: IP67
    • Probe: IP68
  • EMC limits: According to EG 204/108/EG,
    • ETSI EN 301 486-1/-7, EN 61326-1
    • EN 60950-1:2006 + A11:2009 + A1:2010

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