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In-line Conductivity Probe with Pt100 Sensor, 3m Cable - HI7639

HI7639 is In-Line Conductivity probe for conductivity measurement in various industrial applications. This probe has inbuilt pt100 temperature sensor for automatic temperature compensation. This probe is based on four ring technology and it is made up of platinum rings.

  • Four-ring probes measure conductivity with platinum sensors.
  • Built-in temperature sensor for Automatic Temperature Compensation.
  • PEI body


HI7639 conductivity probe

Advantage of Four Ring Conductivity Probe

Three types of conductivity probes are manufactured by Hanna, amperometric (2 Ring), potentionmetric (Four Ring) and Inductive (Electrodeless or Toroidal conductivity probe).

Four electrode conductivity (four-ring conductivity) utilizes a potentionmetric approach to make the measurement; an alternating current is applied to the outer two “drive”electrodes to induce a current in the solution. The voltage is measured between the inner pair of electrodes in solution. The voltage is proportional the conductivity This technology extends the linear range of measurement over three decades. Electrodes are made of graphite, stainless steel or Platinum. Polarization effects are reduced.

The universally acclaimed four-ring method provides an exceptionally stable measurement over a wider range.

  • These probes do not suffer polarization
  • No need of frequent calibration or cell changes.
  • More Stability

HI7639 Conductivity Electrode FEATURES/BENEFITS:

In-line conductivity probe

  • Suitable for direct immersion in pipes.

Built-in Pt100 temperature sensor

  • Provide accurate and effective temperature compensation.

Color coded wires

  • 3m cable incorporating color coded wires for easy connection to transmitters .

Platinum sensor

  • Provides the best response over a wide range of applications.

PEI body

  • PEI bodied electrodes are rugged and suitable for noncritical applications that require a very good combination of chemical, mechanical, and thermal resistance.

Four-ring method

  • Provides an exceptionally stable measurement over a wider range. These probes do not suffer polarization, nor do they need frequent calibration or cell changes.

Additional information

Weight 0.23 kg