CTX2 Conductivity, Level & Temperature Data Logger

Measures and records conductivity, total dissolved solids, and temperature

  • Integrated datalogger collects up to 349,000 records

  • Can measure as low as 10 microsiemens/cm and as high as 300,000 microsiemens/cm

  • Available with Modbus or SDI-12 protocol

  • Includes Aqua4Plus and Aqua4Plus Lite software (Modbus® protocol)


The CT2X is a conductivity and temperature sensor with built-in datalogging. Incorporating a 4-pole epoxy and graphite electrode cell, it is extremely durable and resistant to data interferences—making it excellent for use in rugged field conditions.

The CT2X also comes with Seametrics’ powerful, easy-to-use Aqua4Plus and Aqua4Plus Lite software, affording the user extensive control, including real-time monitoring, flexible programming, and versatile data display options.


  • Measures conductivity, total dissolved solids, and temperature

  • Ranges from 10 microsiemens/cm to 100,000 microsiemens/cm (200,000 and 300,000 microsiemens/cm available on request)

  • Pressure and level option available

  • In-field calibration utilities

  • Narrow 0.75″ diameter, 12.5″ or 16″ length (depending on version)

  • Linear and nLFn temperature compensation

  • Up to 349,000 records in non-volatile memory

  • 316 stainless steel, fluoropolymer, and PTFE construction (titanium optional)

  • Digital industry standard RS485 interface

  • Available with a variety of cable options—including polyethylene, polyurethane, and FEP Teflon

  • Modbus and SDI-12 protocols available

  • Easy export to spreadsheets and databases




  • CT2X 316 Stainless, Cabled

  • CT2X 316 Stainless, Short Version

  • CT2X 316 Stainless, Cableless

  • CT2X Titanium, Cabled

  • CT2X, Titanium, Short Version

  • CT2X Titanium, Cableless

    Level measurement is optional.

    Contact us for additional details on cable and level measuring range options.