Heat tracing tape and power control system

Electric heating – Heating devices – With power supply and voltage or current regulation or...

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Details

219510, 219528, 219535, 219549, 338208, 338212, 338214, H05B 101

Patent

active

045756171

ABSTRACT:
A heat tracing tape which can be cut to required lengths has a heating element comprising at least two lengths of woven or braided resistance wire each in the form of a flat strip. The strips are encased in extruded silicone rubber whereby they are spaced from one another. The strips are electrically connected at one end by a connector and the tape is provided with a power supply termination either at its other end, or at a T-branch connection, for connecting the tape to the power control system. The power control system is adjustable to set an estimated value of power required to maintain a predetermined process temperature. The system automatically adjusts the power supplied to the tape to the estimated value by means of a feedback control system. A process temperature sensor also regulates the power supplied to the tape in accordance with a sense temperature.

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patent: 4352007 (1982-09-01), Baker et al.
patent: 4419569 (1983-12-01), Colten

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