Kamet Mineral insulated thermocouple cableYour supplier of

/Do you need our support? Call Kamet on +31 (0) 85 040 27 00 or contact us here 101

Okazaki manufacturing companyWe are very proud to have Okazaki Manufacturing Company as our partner for mineral insulated (MI)

thermocouple, RTD and heater cable. Okazaki has experience in producing MI cable since 1954 and has

been fine-tuning and perfecting their process ever since. Okazaki works closely with Isabellenhütte, and

other renown Japanese companies to guarantee the outcome of class 1 and better for its MI cables.

The MI cable that Okazaki produces is sold by Kamet under the trademark AerOpak®. Okazaki is

actively promoting further technology development and making efforts to contribute to industrial

progress and social advancement. An example of this would be the creation of the world’s thinnest

MI cable with an outside diameter of 0.08 mm. This achievement has been recognized in the Guinness

Book of World Records.

Kamet is your supplier of mineral insulated thermocouple cable, RTD cable and other high quality

components for industrial temperature sensors in greater Europe. Kamet has been a trustworthy

partner since 1988 for industries where temperature is key focus. We supply excellent products from

top class suppliers, together with whom we continuously strive to improve our products and service.

We stock over 800,000 meters of Okazaki mineral insulated thermocouple and RTD cable in our 1000 m

warehouse, located in Utrecht, the Netherlands. Get in contact with our area sales managers to receive

a quote today.

KAMET & MINERAL INSULATED THERMOCOUPLE CABLE

2

2 /Do you need our support? Call Kamet on +31 (0) 85 040 27 00 or contact us here 10

AerOpak® Mineral insulated thermocouple cable

Principle of MI cableAerOpak® is the trademark for our mineral insulated

thermocouple cable. The construction of our

AerOpak® mineral insulated cable consists of

two conductors (sometimes even four or six) of

dissimilar alloys. These conductors are joined on

the side on which temperature should be measured

(hot junction). Properly joined, a voltage is produced

that can be read to determine temperature (Seebeck

effect). The conductors are insulated with high

quality magnesium oxide and covered with a

corrosion resistant sheath material, such as Inconel

or Stainless steel.

High temperaturesMI cables can provide stable temperature

measurement readings and are often used for

high temperatures (up to 1250 C and even higher)

in hazardous environments.

Harsh conditions

Our product line of AerOpak® mineral insulated

cables can be used under the most severe

conditions that can destroy other types of

thermocouple cable. Based on our rugged

construction, and with a large variety of sheath

materials available, AerOpak® MI cable can be

used in corrosive conditions in a broad temperature

range.

CalibrationEvery single coil of each batch AerOpak® MI

cable is calibrated to ensure IEC60584-2 class1,

ASTM E230 special limits or AMS2750 E.

Traceability is guaranteed on every AerOpak® MI

cable Kamet has in stock.

Why Kamet?

- Continuous improvements on our MI cable by constant testing and reviewing in cooperation with our customers - Every single coil of each batch is calibrated and supplied with a 3.1 certificate and a calibration certificate - MI cables are always produced in class 1 or better - AMS2750D/E, ASTM E230 special limits or cryo calibrations available on request

- Full traceability on all (raw) materials - Special insulation material for consistent measurements at high temperatures

Kamet

°

Kamet

Kamet

Kamet

Kamet

3 /Do you need our support? Call Kamet on +31 (0) 85 040 27 00 or contact us here 10

Surely you have seen our material descriptions such as 120-2M-BKS and 236-2M-CES. Not very

self-explanatory, we know... To make life a little easier we work with article codes. These codes help

you to identify the cables. That is why we have developed a decipher tool to help you figure this out

quickly.

Part number guide

Sheath diameter

Symbols standard diameters (inches) 010 020 031 040 060 062 079 120 125 177 188 236 250 313 354 375 393 500

Metric sizes (mm) 0.25 0.5 0.8 1.0 1.5 1.6 2 3 3.2 4.5 4.8 6.0 6.4 8.0 9.0 9.5 10.0 12.7

Outer sheath diameter of the MI cable

Number of conductors in cable

2

Type of insulation

M

Sheath material of the MI cable

B

Alloy of conductors

K

S: Class 1 material. If left blank: Class 1

best effort

S120Kamet

Outer sheath diameter of the MI cable

Number of conductors in cable

2

Type of insulation

M

Sheath material of the MI cable

B

Alloy of conductors

K

S: Class 1 material. If left blank: Class 1

best effort

S120 - - - --

4 /Do you need our support? Call Kamet on +31 (0) 85 040 27 00 or contact us here 10

120

Outer sheath diameter of the MI cable

Number of conductors in cable

Type of insulation

M

Sheath material of the MI cable

B

Alloy of conductors

K

S: Class 1 material. If left blank: Class 1

best effort

S120 Number of conductors

Symbols Number of thermocouple wires

2 Single

4 Duplex

6 Triplex

8 Quadruplex

2

Outer sheath diameter of the MI cable

Number of conductors in cable

2

Type of insulation Sheath material of the MI cable

B

Alloy of conductors

K

S: Class 1 material. If left blank: Class 1

best effort

SInsulation materials

Insulation type SymbolRecommended max.

operating temperatureApprox. melting temperature

High purity Magnesium Oxide (MgO) > 99.4%

N 1700°C 2800°C

Normal purity Magnesium Oxide (MgO) > 98%

M/C 1700°C 2800°C

M

Single Duplex Triplex

Kamet

Kamet

5 /Do you need our support? Call Kamet on +31 (0) 85 040 27 00 or contact us here 10

Outer sheath diameter of the MI cable

Number of conductors in cable

2

Type of insulation

Sheath material

Sheath material Material number Symbol Recommended max working temperature Melting temperature

AISI 304 1.4301 A 900°C 1400°C

AISI 310(s) 1.4841/1.4845 D 1090°C 1400°C

AISI 316(l) 1.4401/1.4404 C 900°C 1370°C

AISI 316Ti 1.4571 (CT) 900°C 1370°C

AISI 321 1.4541 E 1090°C 1350°C

AISI 347 1.455 F 900°C 1400°C

AISI 446 1.4762/1.4749 (AG) 1090°C 1400°C

Inconel 600 2.4816 B 1175°C 1345°C

Inconel 601 2.4851 (BM) 1200°C 1345°C

*Pyrosil® (PS) or (NIC) 1250°C 1380°C

Hastelloy X 2.4665 V 1200°C 1260°C

Pt10%Rh (AH) 1550°C 1850°C

Pt20%Rh (AW) 1550°C 1850°C

**Haynes Alloy HR-160 (Inconel 600 inner tube)

(HR-160) 1175°C 1345°C

***Molybdenum O 2000°C 2620°C

***Tantalum N 2200°C 2995°C

M

Sheath material of the MI cable

Alloy of conductors

K

S: Class 1 material. If left blank: Class 1

best effort

S120 B

* Pyrosil® is a trademark of Tyco Thermal Controls LLC and its affiliates in designated countries.

** High-temperature corrosion resistance Alloys. Life extensions HR-160 greater than 10x compared to Ni-Cr Alloys and stainless steels are common. Hr-160 contains an Inconel 600 inner tube.

*** For molybdenum and tantalum, please see brochure on high temperature thermocouples.

Kamet

6 /Do you need our support? Call Kamet on +31 (0) 85 040 27 00 or contact us here 10

Outer sheath diameter of the MI cable

Number of conductors in cable

2

Type of insulation

M

Sheath material of the MI cable

B

Alloy of conductors S: Class 1 material. If left blank: Class 1

best effort

S120 Thermocouple wire type

Symbol Thermocouple Recommended max. working temperature

E Cu-CuNi 850°C

J Fe-CuNi 750°C

K NiCr-Ni 1200°C

N NiCrSil-NiSil 1200°C

T Cu-Ni 350°C

S Pt10%Rh-Pt 1450°C

R Pt13%Rh-Pt 1450°C

B Pt30%Rh-Pt6%Rh 870-1700°C

K

Outer sheath diameter of the MI cable

Number of conductors in cable

2

Type of insulation

M

Sheath material of the MI cable

B

Alloy of conductors

K

S: Class 1 material. If left blank: Class 1

best effort

120 Special limits of error

Symbol Limits of error (tolerance) Recommended max. working temperature

S Class 1 according with IEC60584 or ASTM E230 850°C

- Class 2 750°C

Note: All standard AerOpak® cable will be supplied in accordance to IEC60584-2 Class 1

S

Kamet

Kamet

7 /Do you need our support? Call Kamet on +31 (0) 85 040 27 00 or contact us here 10

Tolerances*

Outside sheath diameter (D)

nominal ± tolerance (mm)

Wall thickness (S) nominal

± tolerance (mm)

Conductor diameter (C)

± tolerance (mm)

Inconel 600 Stainless steel Inconel 600 Stainless steel

1.0 ± 0.05 0.13 ± 0.05 0.13 ± 0.05 0.16 ± 0.05 0.16 ± 0.05

1.5 ± 0.05 0.24 ± 0.05 0.24 ± 0.05 0.25 ± 0.05 0.25 ± 0.05

1.6 ± 0.05 0.25 ± 0.06 0.25 ± 0.06 0.26 ± 0.06 0.26 ± 0.06

2.0 ± 0.05 0.31 ± 0.08 0.31 ± 0.08 0.33 ± 0.08 0.33 ± 0.08

3.0 ± 0.05 0.40 ± 0.10 0.43 ± 0.10 0.52 ± 0.10 0.48 ± 0.10

3.2 ± 0.05 0.41 ± 0.10 0.45 ± 0.10 0.56 ± 0.10 0.50 ± 0.10

4.5 ± 0.05 0.55 ± 0.12 0.57 ± 0.10 0.79 ± 0.12 0.73 ± 0.10

4.8 ± 0.05 0.59 ± 0.12 0.68 ± 0.12 0.87 ± 0.12 0.78 ± 0.12

6.0 ± 0.05 0.73 ± 0.15 0.84 ± 0.15 1.10 ± 0.15 1.00 ± 0.15

6.4 ± 0.05 0.78 ± 0.16 0.93 ± 0.15 1.16 ± 0.15 1.09 ± 0.15

8.0 ± 0.05 0.98 ± 0.20 1.15 ± 0.15 1.56 ± 0.15 1.36 ± 0.15

General specifications for standard AerOpak® Mineral insulated thermocouple cable

*Data in line with IEC 61515

Kamet

8 /Do you need our support? Call Kamet on +31 (0) 85 040 27 00 or contact us here 10

Weight and average coil lengths

Sheath diameter (inch) Metric size (mm) Average weight gram/meter

0.020 0.5 4.3

0.040 1.0 9.7

0.060 1.5 11.5

0.062 1.6 17.5

0.079 2.0 36.6

0.120 3.0 40.8

0.125 3.2 45

0.177 4.5 99.8

0.188 4.8 144

0.236 6.0 174

0.250 6.4 272

0.313 8.0 319

Mechanical tolerances

1.1 Sheath diameter: ± 0.05 mm or ± 1% of nominal diameter, whichever is greater.

1.2 Wall thickness: 0.04 mm or at least 15% of nominal wall thickness, whichever is greater.

1.3 Wire diameter: 0.03 mm or at least 10% of nominal wire diameter, whichever is greater.

1.4Surface finish: Metallic, 32 micro inch rms or smoother, slightly dull to bright or polished finish. Scratches or

pits not to exceed 10% of wall thickness or 0.0254 mm, whichever is greater.

1.5Insulation pack density: The MgO insulation will have a pack density exceeding 65% of the theoretical

density.

1.6Straightness: AerOpak® MI cable can be ordered in straight lengths. These straight lengths will have a bow

or curvature.

1.7Sheath anneal: The sheath of each MI cable will receive a full solution anneal, corresponding to the type of

sheath material.

1.8

Storage and shipping seal: Each AerOpak® cable is sealed. When you receive a cable that has been cut to

request, it is sealed with a black wax covered by a shrink sleeve. These seals are suitable for short duration

storage. Uncut coils are supplied with a glob weld. These seals are suitable for long storage or shipment by

sea.

Kamet

Kamet

9 /Do you need our support? Call Kamet on +31 (0) 85 040 27 00 or contact us here 10

Electrical characteristics

2.1Thermocouple wire calibration: To meet class 1 tolerance on calibration as defined in IEC 60584-2, cables

are defined with symbol “S” after the symbol for the thermocouple type in the part number.

2.2Conductor continuity Resistance: Continuity resistance of each wire to be within ± 50% of the theoretical

value for actual average wire diameter and wire material.

2.3Insulation resistance at room temperature: AerOpak® is shipped with room temperature insulation

resistance greater than 1000 mega ohms at 50 VDC (sheath diameters of 1.0 mm to 2.0 mm) and 1000

mega ohms at 500 VDC (sheath diameters of 3.0 mm and greater).

2.4High temperature insulation resistance: For 1 mm diameter AerOpak® at 316°C, insulation resistance for

+300 mm length will be in excess of 10 mega ohms. For 1.6 mm diameter and larger, AerOpak® at 316°C,

insulation resistance for +300 mm length will be in excess of 100 mega ohms.

2.5

Dielectric strength: These are reference values for application to conductor cable only.

Data is at 60 HZ and 21°C.

2.5.2 Straight – 100 volts AC per mil of insulation thickness

2.5.3 Bent – 45 Volts AC per mil of insulation thickness

2.6 Dielectric constant: From 60 to 500 mHZ dielectric constant is 6.93

2.7 Capacitance: For single conductor cable expressed in picofarad/meter vs. ratio of inner diameter/conductor

diameter (ID/d)

Data in range of 60 to 500 mHZ

ID/d 1.5 2.0 2.5 3.0 3.5 4.0 5.0 6.0

Cap/meter 728 478 371 312 269 246 207 213

Environmental characteristics

3.1Temperature: Insulation over temperature range of -270°C to 1650°C without change of phase or chemical

reaction with adjacent metals. Melting temperature of insulation is 2640°C. Limiting temperature is

associated with metals used.

3.2 Pressure: Can withstand external pressure up to 50 000 psi (3500Kg/cm )

3.3Nuclear: Insulation can be subjected to a mean neutron flux of 2x1011n.cm-2s-1 at 100°C and a total peak

irradiation of 8x1018n.cm-2 with no significant change in characteristics.

2

Kamet

Kamet

10 /Do you need our support? Call Kamet on +31 (0) 85 040 27 00 or contact us here 10

Insulation resistance

OD of AerOpak (mm) Characteristics

≥ 0.1 - < 0.25 1 MΩ/3V DC

≥ 0.25 - < 0.5 5 MΩ/50V DC

≥ 0.5 - < 3.0 20 MΩ/100V DC

≥ 3.0 100 MΩ/500V DC

The insulation Resistance (IR) test is a test required by the electrical safety testing standards. The insulation resistance test consists in measuring the insulation resistance of a device under test, while phase and neutral are short circuited together. A megohmmeter is used to measure the ohmic value of an insulator under a direct voltage of great stability Insulation resistance of sheath thermocouple material, the electric shunting resistance between a pair.

Mechanical characteristics

4.1Formability: AerOpak® can be bent around a mandrel having a radius equal to twice the sheath diameter

without rupturing sheath or causing loss of insulation resistance.

4.2 Fabrication: AerOpak® sheath can be welded, brazed and soldered without changing insulation resistance

using normal care for the metals and thickness involved.

Kamet DISCLAIMER

- This brochure has been compiled with the highest possible care and the purpose of the brochure is to give an impression

of our AerOpak® MI cables. Nevertheless, no guarantees can be given as to the completeness, accuracy or timeliness of

the information contained in it. Kamet cannot be held liable for any consequences of using the AerOpak® MI cable. No

rights can be derived from the information shown in this brochure.

- Kamet accepts no responsibility for any damage or incorrect readings that may result from incorrect usage.

Kamet

Kamet

Kamet

Do you have a question about high temperature thermocouples? Check our website, email Kamet or call us on +31 (0) 85 040 27 00

High temperature thermocouples

Kamet is also your supplier of

High temperature thermocouples, also called exotic thermocouples, are used in applications where base metal thermocouples, such as stainless steel or Inconel, cannot be used because of extreme temperatures or hazardous environments. The exotic thermocouples can be used in vacuum, inert, oxidizing and reducing atmospheres. The high temperature thermocouples produced by ARi industries are insulated with material varying from magnesium oxide, alumina oxide and hafnium oxide.

KametKamet Trading B.V.Tennesseedreef 6

NL-3565 CJ UtrechtNetherlands