Manufacturer: Okazaki Manufacturing Company

Features

• Wider Application Range
• Since the outer diameter is small, you can measure the temperature of small targets. In addition, since the structure is a sheath type, AEROPAK is high temperature/high pressure tolerant and can be used for a wide temperature range of -200 to 1,260℃.
• High Response
• Since a thermocouple with a smaller outer diameter has smaller heat capacity, AEROPAK sensitively responds to temperature changes.
• Easier Handling
• The minimum bend radius is two times larger than the sheath outer diameter. AEROPAK easily installed in various places at a site.
• Longer Product Life
• In comparison to conventional thermocouples, AEROPAK has a longer life since it is insulated and sealed with magnesium oxide which is stable chemically for thermo-electromotive force deterioration and accidents of disconnection, etc.
• Mechanical Strength/Pressure Resistance
• Selecting sheath materials allows safe use even in places with high vibration, corrosive atmosphere, high temperature and low temperature. Even a sheath with a small outer diameter allows approx. 350 MPa of pressure resistance strength at 650℃.
• Sheath Outer Diameter Manufacturing Available
• We can manufacture a sheath outer diameter of 0.08 to 22 mm.
• Sheath Length Manufacturing Available
• We can manufacture up to approx. 1,000 m depending on the sheath outer diameter.
• Special Needs Handling
• We can handle various needs with our factory dedicated to sheaths.

Specifications

	Sheath (mm)		Core wire diameter (mm)	Thermocouple type and sheath material (representative example)
	O.D. 外径	t Thickness		SN	SK	SE	SJ	ST
Single element	Φ0.08		10% or more of sheath outer diameter (4)	–
	Φ0.1			–	B		–	–
	Φ0.15			B	B・SA
	Φ0.25				C・B・SA
	Φ0.5				C・B・K・SA
	Φ1.0	10% or more of sheath outer diameter		C・B・K	C・B・K・SN
	Φ1.6		15% or more of sheath outer diameter	D・B・K	D・B・K・SN		C	C
	Φ3.2			D・B・K	D・B・K・SN		C	C
	Φ6.4			D・B	D・B・K・V・SN		C	C
Double element	Φ1.6		10% or more of sheath outer diameter	C・B・K	C・B・K・SN
	Φ3.2		15% or more of sheath outer diameter	D・B・K	D・B・K・SN		C	C
	Φ4.8			D・B・K	D・B・K・V・SN		C	C
	Φ6.4			D・B	D・B・K・V・SN		C	C
	Φ8.0			D・B	D・B・K・V・SN		C	C
Triple element	Φ4.8		10% or more of sheath outer diameter	C・B	C・B		C	C
	Φ6.4		10% or more of sheath outer diameter (4)	D・B	D・B		C	C
	Φ8.0			D・B	D・B		C	C

• Sheath material: B = NCF600eq (1) C = 316SS D = 310SSS K = H2300 (2) V = Hastelloy-X SA = SC1000H (5) SN = SC1000N (5)
• NCF600eq is equivalent to Inconel 600.
• H2300® is a special sheath material for HOSKINS2300®.
• We can manufacture AEROPAK with sheath diameters and materials other than the above. Please contact us. (Example : 347SS, 321SS, 316LSS, etc)
• JIS is not applicable for sheath outer diameter of Φ0.25 or less.
• SC1000H and 1000N are supercouples for high temperature and the core wire diameter is 20% or more of the sheath outer diameter.

Types of Temperature Measuring Junction

Symbol	Type	Shape	Features	Sheath outer diameter applied (mm)
				Single	Double	Triple
G （♯8）	Ground		Pressure resistance of approx. 350 MPa or more. Unsuitable for places with electromagnetic induction interference.	Φ0.5 to Φ8.0	Φ1.6 to Φ8.0	Φ4.8 to Φ8.0
U （♯9）	Non-ground		Used most commonly because of no limitation by measurement targets although the sensitivity is lower than the ground type. Longer product life due to the element being covered by an insulator.	Φ0.08 to Φ8.0	Φ1.6 to Φ8.0	Φ4.8 to Φ8.0
U （♯5）	Non-ground/separation		The temperature measuring junction is set for each pair of double elements and the circuit is separated from an indicator and a recorder. The features are the same as the non-ground type.	–	Φ3.2 to Φ8.0	Φ4.8 to Φ8.0
（♯6）	Exposure		The sensitivity is better because the element is exposed. Suitable for measuring temperature of gas such as the exhaust gas of an engine. Mechanically weaker than other temperature measuring junctions.	Φ1.0 to Φ8.0	Φ3.2 to Φ8.0	Φ4.8 to Φ8.0