CTD-Diver

The CTD-Diver is ideal for ground and surface water applications.

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 22 mm diameter rugged, corrosion-proof ceramic (zirconium-oxide) housing, is the instrument of choice. It autonomously measures conductivity, pressure, and temperature and records them in its internal memory. The CTD-Diver is ideal for ground and surface water level applications.

The CTD-Diver is a submersible datalogger for long-term uninterrupted, real-time water level monitoring using a pressure sensor when submerged at a fixed level under the water surface. The pressure sensor measures the equivalent hydrostatic pressure of the water above the sensor diaphragm to calculate the total water depth. The 4-electrode conductivity sensor measures the true or specific electrical conductivity of the water from 0 to 120 mS/cm.

The CTD-Diver can store a maximum of 144,000 measurements (date/time, pressure, temperature, and conductivity) in its working memory and 144,000 measurements in its backup memory.

The CTD-Diver has the following sample methods: fixed length intervals, event-dependent, averaging, and pumping tests. The measurements are stored in fixed length or continuous memory (fixed length only).

The CTD-Diver is available in the following pressure ranges 10 m, 50 m, 100 m, and 200 m.

Before requesting a quote, please review the Ordering Information tab below to ensure an accurate selection.

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Features & Benefits

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
  • Memory: 144,000 measurements of time stamp, pressure, temperature and conductivity with backup
  • 200-meter pressure range version available

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
  • Suitable for wells with deep filters

Applications

Applications

  • Pollution monitoring: Landfill leachate monitoring
  • Coastal zone aquifer management: Salt water intrusion
  • Estuary monitoring:
    • Water quality
    • Tidal fluctuations
  • Mining:
    • Tailings: Pollution
    • Environmental: Plume/Leakage
  • Remediation:
    • Water quality: Correlate conductivity with permanganate

Key Specifications

Key Specifications

General

Length

135 mm

Diameter

22 mm

Memory

144,000 measurements

Housing

ceramic (ZrO2)

Weight

80 grams

Battery life

10 years (dependent on usage)

Sample interval

1 second to 99 hours

Sample methods

fixed, event-dependent, averaging, and pumping test

Pressure

Part No

DI281

DI282

DI283

DI284

Unit

Range

10

50

100

200

meter

Accuracy

±0.5

±2.5

±5.0

±10.0

cmH2O

Resolution

0.2

1.0

2.0

4.0

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

* typical, see product manual for full technical specification

Ordering Info

Ordering Info

Part NoRange
DI28110 meter
DI28250 meter
DI283100 meter
DI284200 meter

Optional Accessories

 

Diver Assistants

VanEsen Datalogger Collection

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