YOKOGAWA – Inductive (Torodial, Electrodeless) Conductivity Sensor ISC40

///YOKOGAWA – Inductive (Torodial, Electrodeless) Conductivity Sensor ISC40
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YOKOGAWA – Inductive (Torodial, Electrodeless) Conductivity Sensor ISC40

There are two basic sensor styles used for measuring Conductivity: Contacting and Inductive (Toroidal, Electrodeless).

With Inductive Conductivity (also called Toroidal or Electrodeless), the sensing elements (electrode coils) of an inductive sensor do not come in direct contact with the process. These two matched (identical) coils are encapsulated in PEEK (or Teflon) protecting them from the adverse effects of the process.

There is only one cell factor (constant) for the ISC40 Inductive Sensor. It covers nearly the entire conductivity measurement range ~ 50-2,000,000 µS/cm. Only on the low end (below 50 µS) does the accuracy of the sensor suffer.

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Product Description

Features and Benefits

The accuracy is 0.5% of reading plus 0.5 microS/cm for any conductivity value, whether measured in rinse water or in concentrated acids. The materials of construction ensure a long life under harsh industrial conditions.

The erosion/abrasion resistant PEEK (Poly Ether Ether Ketone), which also features excellent chemical resistance in all solutions except fluoric acid or oxidizing concentrated acids. The ultimate material in terms of chemical resistance is the PFA (Teflon) for applications in hydrofluoric acid and oxidizing concentrated acids (nitric, sulfuric, oleum).

The ISC40G and ISC40s are available in PEEK (sensor type GG) for general use. In applications where sample is aggressive to Peek we offer the sensor in Teflon (Sensor type TG).

The ISC40 sensor is provided with a rugged Stainless Steel mounting thread, nut and gasket combination for ultimate flexibility in installation using bulk head installation technique. There is also a wide range of holders and options available for reliable in-line or off-line installation with double O-ring seals for long service life of the sensor. Additional models are available for use in Ball-Valve Insertion applications and in Sanitary Flange installations.

Both sensors have a large bore for optimal resistance to fouling processes and when properly installed, the flow will keep the sensor clean preventing measuring errors.

  • Inductive Conductivity technique for elimination of fouling and polarization errors.
  • Wide bore sensors for long term stability.
  • Installation flexibility by wide range of holders and by the use of universal bulkhead construction.
  • Wide rangeability in terms of conductivity (1 μS/cm to 2 S/cm) and temperature (-20 to 130ºC).
  • All applications where severe electrode fouling prevents the use of contacting electrodes.
  • All ranges except the (ultra) pure water applications.
  • All slurry applications where conventional systems suffer from plugging or erosion.


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