The OTT ecoLog 800 is a self-contained system for measurement of water level, temperature, and conductivity in groundwater and surface water applications. The ecoLog 800 features a complete in-well solution for groundwater measurement and flexible remote data transmission options.
Surface water, Groundwater
Vented pressure cell and 4-electrode graphite conductivity cell
Waterlevel/Pressure, Water temperature, Conductivity
Measures, stores, and transmits water level and temperature data
0 … 4, 10, 20, 40, and 100 m
± 0.05% FS
Yes
Advantages
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, 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
Examples of Use
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
Technical Data
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 (only for version with GSM/GPRS-Modem)
Lithium type
1 x 3.6 V/13 Ah or
1 x 3.6 V/26 Ah
Battery life (hourly measurement, one transmission/day)
Lithium battery (26 Ah)
>10 years
Alkaline batteries (only for version with GSM/GPRS-Modem)
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