MI Cables

MI CABLE

OKAZAKI MI cables are economical MI cables with high reliability. In Japan, it is only we that manufacture the cables from raw materials consistently in our own facilities with our unique technologies. They can be bent and wound in a coil shape and soldered with silver, or welded. We use stainless steel or nickel alloy steel, etc. with high heat/corrosion resistance for sheath materials and we can manufacture cables with an extremely small outer diameter and others according to the purposes of use. Furthermore, the core wire is completely insulated from air and gas with a highly-pure inorganic insulator ( magnesium oxide, etc. ) firmly packed between linear core wire and metal sheath. Therefore, the cables have less oxidizing/corrosion and longer product life and are more economical than naked wires.

Features

In comparison to conventional cables, the MI cables have the following features.

１．Wide Range of Temperature Supported

The MI cables are high temperature/high pressure tolerant and can be used for a wide temperature range from -269 to 1,260°C.
２．Excellent Uniformity

We can manufacture longer MI cables in which inorganic insulators are firmly packed with a method of our unique technology.
３．Easy Handling

Since bending processing is available up to a radius 2 times longer than the outer diameter of the sheath, the MI cables can be installed in various places at sites. They can be wound in a coil shape and soldered with silver, or welded.
４．Longer Product Life

Air tightness is maintained and longer product life is achieved with insulation by magnesium oxide, which is chemically stable.
５．High Mechanical Strength/Pressure Resistance Performance

The MI cables can be used even in the conditions of a place with vibration, corrosive atmosphere, etc.
６．Various Sizes and Shapes

We can manufacture a sheath outer diameter of 0.08 to 26 mm according to your purposes of use.
７．Inorganic Insulator Suitable for Purposes of Use

We use magnesium oxide (MgO) for standard products. We can also manufacture aluminum oxide ( Al₂O₃ ) and silicon dioxide ( SiO₂ ) for special purposes of use.

MI Cables for Thermocouples

	Sheath Outer Diameter （mm）	Sheath Thickness (mm）	Core Wire Diameter （mm）	Sheath Material	Insulator Material	Core Wire Type
Single	0.08	10% or more of sheath outer diameter	10% or more of sheath outer diameter *	NCF600eq.	MgO	K E J T N
	0.10
	0.15
	0.25
	0.5		15% or more of sheath outer diameter	316SS NCF600eq. 310S SS Hoskins2300 Option 321SS 347SS etc.
	1.0
	1.6
	3.2
	4.8
	6.4
	8.0
Double	1.6	10% or more of sheath outer diameter	15% or more of sheath outer diameter
	3.2
	4.8
	6.4
	8.0
Triple	4.8	10% or more of sheath outer diameter	10% or more of sheath outer diameter
	6.4
	8.0

* φ0.25 or less of sheath outer diameter and triple core wire diameter are excluded from JIS application.

MI Cable for Resistance Sensor

	Sheath outer diameter （mm）	Sheath Thickness (mm）	Core Wire Diameter （mm）	Resistance per wire （Ω/ｍ）	Resistance Value Variation （Ω/ｍ）	Sheath Material	Insulator	Core Wire Type
4	0.8	10% or more of sheath outer diameter	10% or more of sheath outer diameter	25.37 Max.	≦0.12	316SS Option 316LSS NCF600eq.	MgO	Nickel oxygen-free copper
	1.6			6.34 Max.	≦0.04
	3.2			1.59 Max.	≦0.008
	4.8			0.71 Max.	≦0.008
	6.4			0.40 Max.	≦0.008
	8.0			0.25 Max.	≦0.008
	9.0			0.20 Max.	≦0.008
	12.75			0.10 Max.	≦0.008
6	3.2	10% or more of sheath outer diameter	10% or more of sheath outer diameter	1.59 Max.	≦0.008
	4.8			0.71 Max.	≦0.008
	6.4			0.40 Max.	≦0.008
	8.0			0.25 Max.	≦0.008
	9.0			0.20 Max.	≦0.008
	12.75			0.10 Max.	≦0.008

Note: We can manufacture the 3-wire type. Contact us.

No. of core wire

No. of core wire		Sheath Outer Diamter (mm)	Resistance Value (Ω/ｍ)		JIS Support	Sheath Thickness （mm）	Core Wire Diameter (mm)	Sheath Material	Insulator Material	Withstand voltage Inspected Value (min.)	Max. Rated Voltage Recommended Value （V Less.）	Heat Generating Body Allowable Temperature Recommended Value （℃）
No. of core wire		Sheath Outer Diamter (mm)	Nickel Chrome NC	Nickel NI	JIS Support	Sheath Thickness （mm）	Core Wire Diameter (mm)	Sheath Material	Insulator Material	Withstand voltage Inspected Value (min.)	Max. Rated Voltage Recommended Value （V Less.）
	2	1.6	46.5	3.80	×	≧0.16	0.26	316SS NCF600eq. etc.	MgO	300	100	500
		1.9	33.0	-	×	≧0.19	0.31			500	100	500
		2.3	22.5	1.74	×	≧0.23	0.38			600	100	600
		2.7	16.2	-	×	≧0.27	0.45			700	150	600
		3.2	11.5	0.90	×	≧0.32	0.53			800	150	650
		3.2	28	-	○	≧0.32	0.34			1200	200	650
		3.8	8.13	-	×	≧0.38	0.63			1000	200	650
		3.8	20.2	-	○	≧0.38	0.39			1500	300	650
		4.8	5.10	0.40	○	≧0.48	0.79			1500	300	650
		4.8	12.9	-	○	≧0.48	0.51			1500	300	650
		6.4	2.85	-	○	≧0.64	1.05			1500	300	650
		8.0	1.80	-	○	≧0.80	1.32			1500	300	650
	1	1.0	26.9	-	×	≧0.10	0.24			450	100	500
		1.6	10.5	1.00	×	≧0.16	0.39			600	100	500
		1.9	7.50	-	×	≧0.19	0.46			600	150	500
		2.3	5.12	0.50	×	≧0.23	0.56			800	150	600
		2.7	3.65	-	×	≧0.27	0.66			900	300	600
		3.2	2.60	0.26	○	≧0.32	0.77			1500	300	650
		3.2	5.60	-	○	≧0.32	0.53			1500	300	650
		3.8	1.83	-	○	≧0.38	0.90			1500	300	650
		3.8	4.13	-	○	≧0.38	0.62			1500	300	650
		4.8	1.15	0.125	○	≧0.48	1.10			1500	300	650
		6.4	0.68	-	○	≧0.64	1.47			1500	300	650