CTD-Diver

3 Parameters in 1 Housing

Where there is a need to monitor groundwater levels and saltwater intrusion, injected wastewater, or contamination from chemical discharges and landfill sites, the CTD-Diver with its rugged, corrosion proof ceramic housing, is the instrument of choice.

The CTD-Diver is equipped with a four-electrode conductivity sensor that measures electrical conductivity from 0 to 120 mS/cm. There are two options for measuring conductivity: true or specific conductivity at 25 °C. Additionally, pressure and temperature are measured and recorded.

 

Features

  • Innovative ceramic housing technology
  • Three sensors in one sealed housing
  • Conductivity range up to 120 mS/cm
  • Compact size: Ø 22 mm - length 135 mm
  • Various measurement methods
  • 48,000 records of time stamp, pressure, temperature and conductivity
  • 30-Point pressure factory calibration
 

Benefits

  • Corrosion proof
  • Monitor conductivity, water levels, and temperature
  • Suitable for use at most sites
  • Easy installation in almost every well
  • Event based, averaging and pumping tests sample methods to conserve memory
  • Cost effective frequent, long-term measuring
  • Reliable and accurate data
 

Applications

  • Monitoring saltwater intrusion
  • Water quality monitoring for:
    • Agriculture
    • Remediation
    • Correlate conductivity with salt, TDS, permanganate, nitrate, sulfate
  • Tidal fluctuations monitoring
  • Estuary and wetlands monitoring
  • Leachate monitoring at landfill sites
  • Aquifer storage and recovery
  • Monitoring network automation
  • Groundwater monitoring projects
  • Mining:
    • Tailings
    • Environmental
    • Slope stability
 

Technical Specification

General

Length

Diameter

Weight

Memory

Wetted parts

housing

conductivity sensor housing

conductivity sensor

o-rings

pressure sensor

cap / nose cone

Battery life

Sample interval

Sample methods

135 mm

22 mm

95 grams

48,000 measurements

 

ceramic (ZrO2)

ceramic (ZrO2)

platinum electrodes on ceramic (Al2O3) carrier

Viton ®

piezoresistive ceramic

Nylon PA6 30% glass fiber

10 years (dependent on usage)

1 second to 99 hours

fixed, event dependent, averaging, and pumping test 

Pressure

Model

DI271

DI272

DI273

Unit

Range

10

50

100

meter

Accuracy

±0.5

±2.5

±5.0

cmH2O

Resolution

0.2

1.0

2.0

cmH2O

Temperature

 

Value

Unit

Range

-20 .. +80

°C

Accuracy

±0.1

°C

Resolution

0.01

°C

Conductivity

 

Value

Unit

Range

30 or 120 (user adjustable)

mS/cm

Accuracy

±1% of reading

mS/cm

Resolution

0.1% of reading

mS/cm