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Okazaki Manufacturing has launched the Aeropak Great, a thermocouple that is said to offer high performance and longer life in harsh process environments.

The thermocouple is said to provide superior resistance to temperature, vibration, impact, corrosion and abrasion.

The Aeropak Great is a thick wall mineral insulated (MI) thermocouple cable, which is ideally suited to harsh, high-temperature process environments such as incinerators, heat treatment furnaces and industrial ovens, as well as for measuring the temperature of molten metal.

Aeropak Great can also be supplied with a hard coating such as cement or Stellite, which offers superior resistance in other harsh, high-temperature applications, including heavy oil, pulverised coal-firing furnaces, cement kilns and dispersion kneaders used in the mixing of plastics or rubber.

With Aeropak Great, the gap between the element and the thick wall sheath is densely filled with high-purity magnesium oxide (MgO), which prevents any residual air from penetrating the sheath.

This enables faster response times compared with conventional standard thermocouples, according to Okazaki Manufacturing.

Aeropak Great offers long life even under harsh operating conditions, and is available in long cable lengths of up to 10m.

It is supplied in large diameters with a very thick wall sheath (up to 22mm outside diameter), providing a high resistance to vibration and impact shocks.

Aeropak Great is said to perform well in bright annealing furnaces and carburisation ovens, where Ta (tantalum) wires are added to Hoskins 2300 material, the selective oxidation rate of Type K thermocouple wire when exposed to H2 gas can be reduced significantly.

When combined with a silicon nitride protection tube, Aeropak Great is able to withstand the high temperatures associated with molten metal applications.

Supplied with an easy-to-use terminal head, Aeropak Great is suitable for a range of temperature sensors and RTDs.

Okazaki Manufacturing Company

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