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Thermocouples offer accuracy and reliability in process heaters

07 September 2009

A range of tube skin thermocouples for process heaters is available, which offers higher accuracy and reliability over competing thermocouples currently available on the market.

Due to its 8mm diameter sheath made from Hastelloy-X, the ‘Fan Tip’ tube skin thermocouple, developed by Okazaki Manufacturing Company, can be bent and coiled to enable movement in both the horizontal and vertical axes.

The 40mm end tip of the thermocouple is designed to be welded to the heater tubes on both sides, significantly reducing the chances of the thermocouple breaking off whilst in service.

Currently used by BP, Esso, Exxon Mobil and Statoil, the Fan Tip thermocouple is ideal for any process burning or heating applications, including hazardous area installations. The Fan Tip is suitable for gas-fired, light fuel oil and heavy fuel oil heaters. The sheath can be supplied in either 316 stainless steel for gas-fired heaters, Hastelloy-X for light fuel oil, or dual sheath AR-161 version for arduous, heavy fuel oil applications.

The length of the sheath can be increased by up to 30 metres. The sheath can be bent in a cold state to meet any fixture and exit point on the heater tube.