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.
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.
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