Cable sensor with shrinking tube insulation are essentially suitable for temperature measurements of all kinds. They are predominantly used as winding head sensors for thermal motor protection. Depending on the application and temperature requirement, the sensor is insulated singly (SH) or doubly (DSH) with a shrinking tube made from Kynar, Kynar Flex or PTFE. PTFE single wires, Teflon hose lines and Teflon flat hose lines in 2, 3 or 4 wire circuits are available as supply lines. The cable cross section extends from AWG20 to AWG30. Any cable length can be chosen. Waterproof versions with protection class IP 66, high voltage-resistant versions up to 8 kV (special implementations up to 20 kV) are possible.
This standardised cable sensor has a Pt100 measuring resistor as per DIN EN 60751 Class B, is connected to the feed in a 2 wire circuit by crimping, and is single or double insulated with PTFE shrinking tube. The temperature range in each case is -70°C ... +260°C.
As the base sensor, a platinum wire is wound onto a glass bolt, contacted and melted homogeneously into glass (type M-GL). The melted sensor is completely tight, vibration-proof and practically hysteresis-free. The uninsulated sensor head has a reaction time of approx. 23 s.
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