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Ceramic Wirewound RTDs

Ceramic wire-wound platinum RTD Elements from Sensor Technology Ltd. are characterised by extremely high stability, high-temperature capability, and high accuracy over a wide temperature range.  Sensors can measure the temperature of gases, liquids and solids, from -196ºC to 850ºC, with a precision between 0.012Ω and 0.12Ω at 0ºC or between 0.03°C and 0.3°C at 0°C.

The ceramic RTD construction design consists of a platinum coil (or depending on the version, two coils) encapsulated in a very high purity, aluminium oxide ceramic tube.  The empty spaces remaining between the platinum coil and the internal tube walls are filled with a material which allow the platinum contraction and expansion movement during temperature variations.

They have multiple applications, such as laboratory, process technology and high value-added equipment. Applications where a highly accurate measurement is necessary should be built with this sensor type and 4 extension wires, however, the 3-wire construction is the most commonly found.

For further technical information on Platinum Sensors, see our Frequently Asked Questions section

Call us today on 01606 871680 or complete the Contact us form, to discuss your application’s thermal sensor requirements.  Using our extensive technical knowledge and innovative supplier base, we will work with you to provide the optimum solution for your product.

  • KN Series Single Pt100 RTD Elements

    A single RTD Pt100 platinum coil element mounted inside a ceramic tube down to 1.0mm diameter or 8mm long minimum.  Accuracies from class B (W0.3) down to 1/10DIN (W0.03) are available.

    • Temperature Coefficient typically 3850 ppm
    • Temperature Range: -196°C to +850°C
    • Accuracies from W0.3 down to W0.03 (1/10DIN)
  • KN Series Duplex Platinum Elements

    Dual platinum coil temperature sensor elements.  A secondary platinum coil is integrated into the same ceramic body with two sets of different length lead-wires for easy identification.

    • Temperature Coefficient (TCR) typically 3850ppm
    • Temperature Range from -196°C to +850°C