Toroidal Conductivity Sensor

  • Conductivity Measurement Range 0 to 2,000,000 microS/cm (2 S/cm)
  • Toroidal Conductivity Sensor Head Precalibrated sensor head for conductivity and temperature. Plug & Play with any Datastick to yield accurate 24-bit data.
  • Universal DataStick Provides conversion of sensor signals and interactive communication for configuration, measurement, calibration and diagnostics
Product Options


The Toroidal Conductivity Sensor Probe from Thermo Scientific provides highly accurate direct 24 bit conductivity data. The conductivity sensor heads are pre-calibrated with no field calibration required, providing a simple 'plug & play' system that is mechanically rugged and exceptionally chemical resistant. A wide range of plug-in communication adapters provide and array of connectivity options including Modbus RTU, DeviceNet, Profibus, USB, CANopen and Ethernet. Connect directly to a PLC (Programmable Logic Controller) for seamless integration with industrial control systems.

Any computer can be used to display data, customize and calibrate the datastic system without the need for an intermediate analyzer electronics box. An integral temperature sensor automatically compensates measured values for changes in process temperature. The toroidal conductivity sensor's onboard electronics are completely encapsulated and O-ring sealed for complete protection from moisture and humidity, and the wall thickness of the sensor prevents cracking during heating and cooling cycles.

Manufactured by: Thermo Scientific
Model: Toroidal Conductivity Sensor

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Chemical production
- Leak detection in heat exchangers
- Acid and caustic dilution
Metal finishing
- Plating bath control
- Parts cleaning and rinsing
- Pickling bath control
- Waste streams
Pulp and paper
- Black, white or green liquor
- Pulp bleaching food processing
- Chemical peeling
- Sanitisation (CIP)
- Wet chemical scrubbers
- Cooling towers


Measurement System Performance†
Range 0 to 2,000,000 µS/cm (2 S/cm)
Resolution 4.5 significant digits
Accuracy 0.1% of reading
Step Response Time 90% in 30 seconds
Operational Environment
PEEK Sensor Head Temperature Range: 5°C to 100 °C
Maximum Pressure: 200 psig @ 100°C
Maximum Flow Rate: 10 ft/second
CPVC Sensor Head Temperature Range: 5°C to 75°C
Maximum Pressure: 85 psig @ 75°C
Maximum Flow Rate: 10 ft/second
Power Requirements‡
Voltage Range 10 to 30 VDC
Maximum Power 200 mW
Typical Power 120 mW
O-rings Viton (other materials available)
Sensor Head Material CVPC, PEEK
Weight 1.2 lbs (PEEK or CPVC)
2.6 lbs (316 Stainless Steel)
Units of Measure
Measurement Units µS/cm, TDS, % conc.
Temperature Units °C,°F
Zero In dry air
Span 1 point
Temperature 1 point
Temperature Compensation Options††
Linear % per °C
Other Configuration Options
Sensor Filter 0 to 100 seconds
Temperature Filter 0 to 100 seconds
Concentration Table User 10-point
Approvals and Ratings
Immunity & Emissions CE Certified 89/336/EEC:
CISPER 11, EN61000 (-4-2,-4-3,-4-4,-4-6, 4-8)
Safety cULus Listed; 367G E303570
Hazardous Locations Haz Loc Class 1, Division
2, Groups A, B, C, D. Max Ambient 80 °C
†Note: Typical at 25°C Performance unaffected by cable length
‡Note: Class II DC power supply required
††Note: Toroidal are pre-calibrated at the factory
‡‡Note: Temperature can be entered manually