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Leveline CTD Logger

Description

The LL-CTD-GAUGE-010 is a vented 10m water level, temperature, conductivity and salinity logger designed for long-term deployment in diverse aquatic environments, including harsh and saline conditions, thanks to its durable all-Titanium body and comes backed by a 5-year warranty. It precisely measures water levels up to 10m with a vent tube to allow for pressure compensation to current atmospheric pressure. The logger will also take conductivity (range 0-200,000 µS/cm), and salinity readings (range 0-70 PSU) with temperature (compensated across -20 to 80°C. A sealed version is also available that doesn’t need a cabled connection to the surface, LL-CTD-ABS-010.

The LL-CTD-GAUGE-010 connects via the Vented Leveline Extension Cables to surface, where connection via the LL-EXT-TEL-AD and EX-TDH allows for desiccant to prevent water ingress. The integrated data logger, capable of storing 500,000 data points and powered by a 10-year lithium battery. The whole unit is housed within a 22mm x 186mm all-Titanium body, ensuring resilience in demanding environments. Communication interfaces include SDI-12 and RS485 Modbus for retrieving data. The device is supported by LeveLink PC software for data processing and carries a 5-year warranty.

Features

  • 0.05% FS accuracy for level.
  • 1% of reading accuracy for conductivity and salinity.
  • 500,000 data point memory.
  • 10 Year Battery Life.
  • Titanium Body.
  • 5 Year Warranty.
  • Included LeveLink PC Software for basic and advanced data compensation.
  • SDI-12, RS485 Modbus direct out communications.
  • 22mm x 260mm
  • Sealed Absolute option available.

Applications

  • Saltwater Intrusion.
  • Contaminant plume profiling.
  • Tracer tests.
  • Leachate monitoring.
  • Groundwater level monitoring, pump tests, slug tests etc.
  • Stream, lake and reservoir water level measurement.
  • Wetland and flood water monitoring.
  • Coastal monitoring.
  • Tank level measurement.
  • Long term continuous monitoring in boreholes, surface water and seawater applications.
  • Spot Measurements.

Specifications

GENERAL
Temperature ranges Operational: -20-80°C, Storage: -40-80°C, Compensated: -20-80°C
Diameter 22mm
Length 260mm
Weight 250g
Materials Titanium body, Delrin nose cone
Output options RS485 Modbus, SDI-12, Aquaread proprietary
Battery type & life 3.6V Lithium, up to 10 years (Depending on logging rate)
External power 6-24vDC
MEMORY & OUTPUT RATE
Memory size 8.0MB
Data records 500,000 readings
Log types Linear, Event & User-Selectable Schedule with Future Start, Future Stop, Deploy Start and Real Time View
Fastest Modbus output rate 1 per second
Fastest SDI-12 output rate 1 per second
Real-time clock Accurate to 1 second/24-hr period (± 6 minutes/year)
SENSOR
Type / Material Piezoresistive ceramic
Range (Gauge) 10.0M (32.8 ft)
Maximum pressure Max 2x range, Burst 2.5x range
Accuracy (FS) ±0.05% FS
Resolution 0.002% FS or 1mm whichever is greater
Units of measure Pressure: mBar (psi, kPa, Bar, mBar, mmHg, inHg, cmH2O, inH2O), Level: m, ft, mm, cm and mm available in Levelink
ELECTRICAL CONDUCTIVITY
Range 0 – 200mS/cm (0 – 200,000μS/cm)
Resolution 1μS
Accuracy ±1% reading or ±1μS whichever is greater
SALINITY
Range 0-70 PSU / 0-70 ppt (g/Kg)
Resolution 0.01PSU / 0.01 ppt
Accuracy ±1% reading or ±0.1 unit, if greater
TEMPERATURE SENSOR
Accuracy & resolution ±0.1°C, 0.01°C
Units of measure Celsius (fahrenheit available in Levelink)
WARRANTY
Standard 5 years
Extended Options Available