Type S Fiberglass Insulated Compensating Cable

Type S is the platinum thermocouple traditionally used as a calibration reference and in high-temperature laboratories, sintering furnaces and molten-metal work. Like Type R, it relies on compensating cable; R and S compensating cables are similar but should be ordered for the exact sensor type.

In the fiber/fiber construction each conductor is wrapped in braided, varnished glass yarn and the pair is braided again overall. It handles radiant heat near furnace walls and boiler casings far better than PVC, while staying light and easy to route through cable trays.

Our Type S fiberglass cable uses Copper / Copper-Nickel compensating alloy conductors in SCA / SCB compensating grade. Fiberglass insulation, typically up to 250°C continuous (higher constructions on request). It follows the Orange (+) / White (−), orange sheath colour code under IEC 60584-3, with ANSI MC96.1 colours (Black (+) / Red (−), green sheath) available for export or imported instruments. Standard sizes are 7/36, 3/26, 3/28, 3/22, 1/24, 1/22, 0.5, 1, 1.5 and 2 sq mm, in single-pair or multi-pair construction.

Accuracy depends on using cable of the same type as the sensor and connecting it with the right polarity. A Type S sensor needs Type S compensating cable all the way to the instrument; copper wire or cable of a different type adds an error wherever the junction is warm. Typical tolerance: Class 2 ±2.5°C (IEC 60584-3, 0–100°C at the junction).

When ordering Type S fiberglass cable, tell us the conductor size, number of pairs, total length, the colour standard your panel follows and the highest temperature the cable route will see. If only part of the route is hot, we can suggest a hot-zone section in a heat-resistant construction joined to a lower-cost cable for the cool run, which keeps accuracy while reducing cost.

Rewari Cable Industries manufactures this cable at our Rewari factory and supplies it in drums or cut lengths with a Material Test Certificate for each batch, covering conductor resistance, insulation resistance and spark test. Use the thermocouple cable configurator to pick size, insulation and length, or send your drawing on WhatsApp for a quote.