Mineral Insulated Metal Sheathed Cable -

W A T L O W

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XACTPAK® CableWatlow helped pioneer XACTPAK®

mineral insulated, metal-sheathedcable. The unique properties ofXACTPAK make it ideally suited tosolve a wide variety of problem applications.The outer sheath can be made from any malleable metal in a wide range of diameters, containing single ormultiple wires. Easily formed or bent,it can accommodate virtually anyconfiguration. The outer sheath pro-tects thermocouple or thermocoupleextension wires from oxidation andhostile environments that wouldquickly destroy unprotected wire.The mineral insulations available provide excellent high temperaturedielectric strength to ensure signals are carried faithfully to your instru-mentation or controls.

Performance Capabilities• Available in standard and special

limits of error accuracy• Diameters from 0.010 to 0.5 inch

(0.25 to 12.7 mm)• Compliance with recognized

agency tolerances andspecifications

• Sheath materials available to with-stand a wide variety of hostile andcorrosive environments

• Calibrated for intended tempera-ture range

• Temperature ranges from 0 to1480°C (32 to 2700°F)

• Cryogenic cable available upon request

Features and BenefitsFFiirreepprrooooff ccaabbllee

•• Perform where conventional insulated wires burn and degrade

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•• Precisely measures temperature for a fast response

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•• Resists contamination

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•• Allows use in pressure vesselsand vacuum applications

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•• Adapts to virtually any application

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•• Withstands thermal cyclingCCoommppaacctt,, dduurraabbllee aanndd ccoorrrroossiioonnrreessiissttaanntt

•• Long life performance with minimum constraints on applications

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•• Meets demanding applicationneeds

Applications• Atomic research• Bearing temperature• Blast furnaces

• Catalytic reformers• Diesel engines• Food and beverage• Furnaces• Glass and ceramic• Heat treating• Instrument cabling• Jet engines and test cells• Kilns• Laboratory and research• Medical• Nuclear reactors• Power stations and steam

generators• Refineries and oil processing• Rocket engines• Semiconductor processing• Turbines• Vacuum furnaces

Mineral InsulatedMetal-Sheathed Cable

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Quality Control and TestingTo maintain quality and consistency,XACTPAK cable is manufacturedunder carefully controlled proce-dures and rigid standards of cleanli-ness. Quality checks are made atcritical points throughout the manu-facturing process.

All XACTPAK cable is inspected and tested for sheath condition, insula-tion density, conductor uniformity,electrical continuity, insulation resis-tance, calibration conformance andphysical dimension. Special testingand certification—including heliumleak, homogeneity and metallurgicalexamination, among others—areavailable on request.

Quality AssuranceEvery coil of XACTPAK cable is thor-oughly tested for continuity, insula-tion resistance, physical dimensionsand physical appearance.Each lot, or batch of XACTPAK con-tains raw materials (sheath, insul-ation, wires) from one production lotwhich eliminates the need to cali-brate every thermocouple cut from acoil because of poor homogeneity.

Samples from each lot are calibratedin our modern calibration laboratoryby highly skilled technicians. Unlikesome manufacturers who calibrate ata few low temperature calibrationpoints, Watlow calibrates throughoutthe range that the cable is designedfor.

Care, Handling and Fabrication of XACTPAK CableTo maximize the performanceadvantages made possible byXACTPAK cable’s overall premiumquality, the following instructionscovering its storage, handling andfurther fabrication should beobserved.

StorageTo prevent moisture from beingabsorbed by its hygroscopic mineralinsulation, both ends of each length of XACTPAK cable are sealed at thefactory. To further guard againstmoisture penetration, it is advisableto store XACTPAK material in a dryplace.

MoistureIf XACTPAK cable is not adequatelysealed, its insulation will absorbmoisture. This will lower its electrical resistance and may prove to be troublesome in subsequent welding.Minor moisture penetration can beremedied by using a blow torch toheat the sheath. Apply the flame sixto seven inches from the open endand slowly work the flame to andover the end. Reseal the end after ithas cooled to about 82°C (180°F).Deep moisture penetration isunlikely, but should it occur thematerial may be baked at approxi-mately 121°C (250°F) for 24 hours toincrease its insulation resistance. Ifbaking does not bring the insulationresistance back to acceptable lev-els, the material should be dis-carded.

For a more complete discussion of Watlow’sadvanced technologicalcapabilities, refer to thelaboratory services section, pages 30 to 35.

XACTPAK CableTechnical Data

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CuttingWhen pieces are cut from a lengthof XACTPAK cable, the exposedends should immediately besquared and sealed. Squaring andsealing will guard against possiblecontamination and remove any loos-ened insulation or distorted wirecaused by cutting. A light pressuresanding with a 180-grit belt is theeasiest method for rough squaringof 0.040 inch or larger diameterXACTPAK cable. Using hard pres-sure against the sanding belt willcause excessive heat build-upwhich may “smear” the soft metalover the insulation. After sanding, aclean fine toothed file should beused to dress the squared ends.Each exposed end should then besealed with XACTSEAL to preventmoisture absorption.Inexperienced personnel may find0.032 inch or smaller diameter XACTPAK cable difficult to handleand will probably prefer to have allcutting, stripping and fabricatingdone at our factory.

Insulation ResistanceXACTPAK mineral insulated, metal-sheathed cable should have a mini-mum room temperature insulationresistance of 100 megohms whentested at 50VÎ(dc) both wires tosheath and wire to wire.All ceramics used in XACTPAKcable will decrease in resistance astemperature increases.

Shipping and PackagingXACTPAK cable is stocked in ran-dom lengths from 20 feet to the“Maximum Stock Lengths” listed inthe tables on the following pages.We reserve the right to supply ran-dom lengths of our choice unlessspecific cut lengths are specified onyour order.

On request, XACTPAK cable can befurnished in other coil dimensions orshipped in straight form when nec-essary. Longer lengths are availableon special order.

StrippingA hand stripping tool will readilyremove the sheath from 0.010through 0.125 inch diameter XACTPAK cable. However, due tothe difficulty of working with 0.032inch or smaller diameter material, itis recommended that small diametermaterial be ordered factory stripped.Material larger than 0.125 inch diam-eter can be stripped on a lathe witha suitable tool bit or lathe-mountedstripping tool. It is also possible tostrip larger sizes of XACTPAK cableby using a hacksaw to make a ringcut through the sheath at the desireddistance from the end. Hammeringthe severed portion of sheath at sev-eral places will break up the insula-tion allowing the sheath to beslipped off. After stripping, theexposed conductors should besandblasted or cleaned with emerycloth. The exposed ends should beresealed immediately after comple-tion of the stripping operation.

FormingBecause XACTPAK cable’s sheath isdead soft and bright annealed, it canbe formed and shaped to most con-tours without risk of cracking. As arule of thumb, the sheath can beformed around a mandrel twice thesheath diameter without damage. Inother words, 0.125 inch diameterXACTPAK cable can be woundaround a 0.250 inch diameter mandrel.


XACTPAK CableTechnical DataCare, Handling and Fabrication of XACTPAK Cable(Continued)

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WeldingBecause of the delicate nature of thework and to avoid possible contami-nation, it is recommended that thefabrication of “hot” or “measuring”junctions be done at our factory.If they are attempted in the field, awelding rod of the same material asthe sheath should be used, and thewelding method should be by inertgas. Flux should not be used as itwill contaminate the insulation.

Other weldments, such as to a ves-sel or pipe, should be made in aninert atmosphere to prevent oxida-tion of the sheath. When workingwith XACTPAK cable of 0.040 inchoutside diameter or less, extremecaution should be used not to burnthrough the sheath.

How to Select XACTPAK Cable to Suit Your Requirements

Our mineral insulated metal-sheathed cable section has beendesigned for ease of use so that theright cable is chosen for each appli-cation. The following four items mustbe considered when selectingXACTPAK mineral insulated metal-sheathed cable:

1. Sheath MaterialThe sheath serves to isolate and pro-tect the wires and insulation fromcontamination and mechanical dam-age. There is no sheath materialwhich is appropriate for all condi-tions so Watlow offers a wide varietyto choose from. Temperature,strength, corrosiveness, service lifeand cost must be considered whenselecting a sheath material.

2. CalibrationWatlow stocks all ASTM recognizedthermocouple types along with manythat have not been recognized, suchas the full line of tungsten rheniumthermocouples. We also manufac-ture cable with other wire alloys suchas nickel, copper, nickel clad cop-per, 304 SS, Alloy 600 and virtuallyany malleable metal.

3. Insulation MaterialThe insulation separates the conduc-tors from each other and the outersheath. When selecting insulation,temperature rating, environment andcost must be taken into account.

4. Physical CharacteristicsThe diameter of the sheath and thewall thickness will directly affect thefollowing:• Time response• Service life• Flexibility• Pressure rating• Strength

5. Specify Coil LengthsRandom—the factory selects for you(20 foot minimum). Special—specifylengths and tolerance. Cut to lengthcharges and minimum order quantities may apply.


XACTPAK CableTechnical DataCare, Handling and Fabrication of XACTPAK Cable(Continued)

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334477 SSSS0055—Maximum temperature: 870°C(1600°F). Similar to 304 SS exceptnickel niobium stabilized. This alloyis designed to overcome suscepti-bility to carbide precipitation in the480 to 870°C (900 to 1600°F) range.Used in aerospace and chemicalapplications.

444466 SSSS1133—Maximum temperature: 1150°C(2100°F). Ferritic stainless steelwhich has good resistance to sul-furous atmospheres at high temper-atures. Good corrosion resistance tonitric acid, sulfuric acid and mostalkalies. 27 percent chromium con-tent gives this alloy the highest heatresistance of any ferritic stainlesssteel.

332211 SSSS1166—Maximum temperature: 870°C(1600°F). Similar to 304 SS excepttitanium stabilized for inter-granularcorrosion. This alloy is designed toovercome susceptibility to carbonprecipitation in the 480 to 870°C(900 to 1600°F) range. Used inaerospace and chemical applications.

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HHaasstteellllooyy ®®XX1188—Maximum temperature: 1205°C(2200°F). Widely used in aerospaceapplications. Resistant to oxidizing,reducing and neutral atmosphericconditions. Excellent high tempera-ture strength along with superior oxi-dation resistance. Resistant to stresscorrosion cracking in petrochemicalapplications.

IInnccoonneell®® 6600111199—Maximum temperature: 1175°C(2150°F) continuous, 1260°C(2300°F) intermittent. Similar to Alloy 600 with the addition of alu-minum for outstanding oxidationresistance. Designed for high tem-perature corrosion resistance. Thismaterial is good in carburizing envi-ronments, and has good creep rup-ture strength. Do not use in vacuumfurnaces! Susceptible to intergranu-lar attack by prolonged heating in540 to 760°C (1000 to 1400°F)temperature range.


// // //XACTPAK CableSheath MaterialThe following information is designed to be used as a guide and may notbe correct in every application. If indoubt, consult with your Watlow salesengineer or the factory.AAllllooyy 6600000011—Maximum temperature: 1175°C(2150°F). Most widely used thermo-couple sheath material. Good hightemperature strength, corrosionresistance, resistance to chloride ionstress corrosion cracking and oxida-tion resistance to high temperatures.Do not use in sulfur bearing environ-ments. Good in nitriding environments.

330044 SSSS0022—Maximum temperature: 900°C(1650°F). Most widely used low tem-perature sheath material. Extensivelyused in food, beverage, chemicaland other industries where corrosionresistance is required. Subject todamaging carbide precipitation in480 to 870°C (900 to 1600°F) range.Lowest cost corrosion resistantsheath material available.

331100 SSSS0033—Maximum temperature: 1150°C(2100°F). Mechanical and corrosionresistance, similar to but better than304 SS. Very good heat resistance.This alloy contains 25 percentchromium, 20 percent nickel. Not asductile as 304 SS.

331166 SSSS0044—Maximum temperature: 900°C(1650°F). Best corrosion resistanceof the austenitic stainless steelgrades. Widely used in the food andchemical industry. Subject to damag-ing carbide precipitation in 482 to870°C (900 to 1600°F) range. Hastelloy® is a registered trademark of

Haynes International.Inconel® is a registered trademark of the Special Metals Corporation.

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XACTPAK CableSheath Material(Continued)


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IInnccoonneell®® 6622552255—Maximum temperature: 980°C(1800°F). Used in many aerospaceapplications. Excellent high temperature strength. Excellentresistance to pitting and crevice corrosion. Unaffected by radiationembrittlement.

HHaayynneess®® AAllllooyy 2233003322—Maximum temperature: 1150°C(2100°F). This alloy offers excellenthigh temperature strength, oxidationresistance and long term thermalstability. Used in aerospace applica-tions, chemical process industriesand high temperature industrial heating applications. This alloy isrecommended for use in nitridingenvironments.

HHaayynneess®® AAllllooyy HHRR--1166003388—Maximum temperature 1175°C(2150°F). Developed to providesuperior sulfidation-resistance at hightemperatures. This alloy shows goodresistance to corrosion in some salt bath applications. Applicationsinclude sulfur furnaces, waste incin-erators, coke burners, recuperators,cement kilns and high temperaturefurnaces.

HHaayynneess®® AAllllooyy 7711884422—Maximum temperature 700°C(1300°F). A precipitation hardend-able Inconel® alloy developed forcorrosion resistance and excellentweldability. Applications include gas turbine, aerospace, oil and gas production and nuclear.


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XACTPAK CableCalibrationAASSTTMM TTyyppee JJ11—Type J’s positive leg (JP) is iron.Its negative leg (JN) is approxi-mately 45 percent nickel-55 percentcopper. When protected by com-pacted mineral insulation and outersheath, Type J is usable from 0 to815°C (32 to 1500°F). Type J is notsusceptible to short range orderingin the 0 to 538°C (700 to 1000°F) tem-perature range, (+2 to +4°F drift)which occurs with ASTM Type E andK. This low cost, stable thermocou-ple calibration is primarily used with96 percent pure MgO insulation andstainless steel sheath.

AASSTTMM TTyyppee KK22—Type K’s positive leg (KP) isapproximately 90 percent nickel-10 percent chromium. Its negativeleg (KN) is approximately 95 percentnickel-two percent aluminum-two per-cent manganese-one percent silicon.When protected by compacted min-eral insulation and outer sheath,Type K is usable from -35 to 1260°C(-32 to 2300°F). If the application isbetween 600 to1100°F, we recom-mend Type J or N because of shortrange ordering that can cause driftof +2 to +4°F in a few hours time.Type K is relatively stable to radiationtransmission in nuclear environments.For applications below 0°C (32°F),special alloy selections are usuallyrequired.


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AASSTTMM TTyyppee TT33—Type T’s positive leg (TP) is purecopper. Its negative leg (TN) isapproximately 45 percent nickel-55percent copper. When protected bycompacted mineral insulation andouter sheath, Type T is usable from 0to 350°C (32 to 660°F) and very sta-ble in cryogenic and low temperatureapplications. For applications below0°C (32°F) special alloy selectionsmay be required.

AASSTTMM TTyyppee EE44—Type E’s positive leg (EP) is ap-proximately 90 percent nickel-10percent chromium. Its negative leg(EN) is approximately 45 percentnickel-55 percent copper. Whenprotected by compacted mineralinsulation and outer sheath, Type Eis usable from 0 to 900°C (32 to1650°F) and has the highest EMFoutput per degree of all ASTM types.If the application temperature isbetween 600 to 1100°F, we recom-mend Type J or N because of shortrange ordering which can cause driftof +1 to +3°F in a few hours time.For applications below 0°C (32°F),special alloy selections may berequired.

AASSTTMM TTyyppee NN88—Type N’s positive leg (nicrosil) is approximately 14 percentchromium-1.4 percent silicon-84.6nickel. Its negative leg (nisil) isapproximately 4.4 percent silicon-95.6 percent nickel. When protectedby compacted mineral insulation andouter sheath, it’s usable from 0 to1260°C (32 to 2300°F). Type N over-comes several problems inherent inType K. Short range ordering, (+2 to+4°F drift), in the 315 to 590°C (600to 1100°F ) range is greatly reduced,and drift rate at high temperatures isconsiderably less. Type N is alsomore stable than Type K in nuclearenvironments.

MMiisscceellllaanneeoouuss99—Consult factory.


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High Purity Magnesium Oxide(MgO) 99.4 Percent MinimumPurity11—Low impurity levels make thisinsulation very useful for all thermo-couple calibrations up to 1370°C(2500°F). Above 2500°F we recom-mend using hafnia oxide insulationbecause of MgO’s low resistivity.This material meets the requirementsestablished in ASTM E-235.

Alumina Oxide (Al2O3) 99.6%Minimum Purity22—Although this material is compa-rable to MgO in its electrical proper-ties and cost, it does not compactwell and tends to “powder out.” Thisundesirable characteristic has madethis insulation unpopular in industryso cable with this type of insulation isavailable only as a “special.”


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Magnesium Oxide (MgO) 96%Minimum Purity55—This low cost insulation is similarto high purity MgO (1) except itshould be used in applicationsbelow 1095°C (2000°F) because ofthe impurity levels. This insulationshould not be used with platinum orin nuclear applications.

Hafnia Oxide (HfO2)77—Hafnia is now being used as asubstitute for beryllia oxide becauseof beryllia’s toxicity problem. Thetemperature limit of hafnia is 2500°C(4530°F), which is higher than BeO.


// // //XACTPAK CableInsulation

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0011 0.020 inch +0.001 9 inch 0.08 <0.02 0.03–0.0005

0022 0.032 inch +0.001 9 inch 0.20 0.02 0.07–0.0005

0033 0.040 inch +0.001 9 inch 0.32 0.04 0.13–0.0005

0044 0.063 inch ±0.001 24 inch 0.74 0.220 0.400055 0.090 inch ±0.001 24 inch 1.50 0.33 0.680066 0.114 inch +0.002 24 inch 2.45 0.38 0.85

–0.0010077 0.125 inch +0.002 24 inch 3.00 0.50 1.10

–0.0010088 0.188 inch +0.002 24 inch 6.65 1.00 2.30

–0.0011111 0.250 inch +0.003 24 inch 11.65 2.20 4.10

–0.0011122 0.313 inch +0.003 24 inch 19.60 5.00 7.00

–0.0011133 0.375 inch +0.003 straight or 28.10 8.00 11.00

–0.001 40 inch coils1144 0.430 inch +0.003 straight or 35.0 11.00 15.00

–0.001 40 inch coils1155 0.500 inch +0.003 straight or 47.0 15.00 20.00

–0.001 40 inch coils1166 0.010 inch +0.001 9 inch 0.019 <0.02 <0.02

–0.00051177 0.011 inch +0.001 9 inch 0.022 <0.02 <0.02

–0.00051188 0.0126 inch +0.001 9 inch 0.029 <0.02 <0.02

–0.00051199 0.025 inch +0.001 9 inch 0.13 <0.02 0.05

–0.00055511 0.5 mm ±0.02 23 cm 0.08 <0.02 0.035522 1.0 mm ±0.02 23 cm 0.32 0.04 0.135533 1.5 mm ±0.02 61 cm 0.65 <0.15 0.355544 2.0 mm ±0.03 61 cm 1.13 0.25 0.555555 3.0 mm ±0.03 61 cm 2.60 0.40 0.905566 4.5 mm ±0.03 61 cm 6.00 0.95 2.005577 6.0 mm ±0.05 61 cm 10.50 2.00 3.505588 8.0 mm ±0.05 61 cm 19.65 5.00 7.005599 9.0 mm ±0.05 61 cm 25.00 7.50 10.00

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*Note: First order response time 63.2%.

XACTPAK CableSheath O.D.

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Single Element

440011//22110011 0.020 Alloy 600 K 99.4% MgO 38 0.003 100 871 (1600)440022//22110011 0.020 304 SS K 99.4% MgO 38 0.003 100 871 (1600)440011//22110022 0.032 Alloy 600 K 99.4% MgO 34 0.004 150 871 (1600)440011//11110033 0.040 Alloy 600 J 99.4% MgO 32 0.006 250 816 (1500)440011//22110033 0.040 Alloy 600 K 99.4% MgO 32 0.006 250 871 (1600)440022//11110033 0.040 304 SS J 99.4% MgO 32 0.006 250 816 (1500)440044//22110033 0.040 316 SS K 99.4% MgO 32 0.006 250 871 (1600)440011//22110044 0.063 Alloy 600 K 99.4% MgO 28 0.009 1000 1093 (2000)440011//22110077 0.125 Alloy 600 K 99.4% MgO 22 0.017 900 1177 (2150)440011//22550077 0.125 Alloy 600 K 96% MgO 22 0.017 900 1093 (2000)440011//88110077 0.125 Alloy 600 N 99.4% MgO 22 0.017 900 1177 (2150)440022//11550077 0.125 304 SS J 96% MgO 22 0.017 900 816 (1500)440022//22110077 0.125 304 SS K 99.4% MgO 22 0.017 900 871 (1600)

440022//22550077 0.125 304 SS K 96% MgO 22 0.017 900 871 (1600)440022//33550077 0.125 304 SS T 96% MgO 22 0.017 500 350 (662)440033//22550077 0.125 310 SS K 96% MgO 22 0.017 900 1093 (2000)440044//22550077 0.125 316 SS K 96% MgO 22 0.017 900 871 (1600)440044//33550077 0.125 316 SS T 96% MgO 22 0.017 500 350 (662)

440044//44550077 0.125 316 SS E 96% MgO 22 0.017 900 871 (1600)441188//22110077 0.125 Hastelloy® X K 99.4% MgO 22 0.014 125 1204 (2200)440011//22110088 0.188 Alloy 600 K 99.4% MgO 19 0.025 350 1177 (2150)440011//22550088 0.188 Alloy 600 K 96% MgO 19 0.025 350 1093 (2000)440022//11550088 0.188 304 SS J 96% MgO 19 0.025 350 816 (1500)440022//22550088 0.188 304 SS K 96% MgO 19 0.025 350 871 (1600)440033//22550088 0.188 310 SS K 96% MgO 19 0.025 350 1093 (2000)440044//11550088 0.188 316 SS J 96% MgO 19 0.025 350 816 (1500)

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*To specify special limits add to code number: /SP



XACTPAK CableVariation/Limits of Error

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440011//22550077//005500 0.125 Alloy 600 K 96% MgO 24 0.017 900 1093 (2000)440044//11550077//005500 0.125 316SS J 96% MgO 24 0.017 900 816 (1500)440022//11550088//005500 0.188 304 SS J 96% MgO 21 0.025 350 816 (1500)440011//22551111//005500 0.188 Alloy 600 K 96% MgO 18 0.033 220 1093 (2000)440011//44551111//005500 0.250 Alloy 600 E 96% MgO 18 0.033 220 871 (1600)440044//11551111//005500 0.250 316 SS J 96% MgO 18 0.033 220 816 (1500)


8010 4 oz dispenser can

Code No. Description

XACTSEAL Watlow developed a premiumsealant for sealing the exposedends of XACTPAK sheathed typematerial against moisture penetra-tion. At room temperature, thin lay-ers of the sealant air-dry inapproximately one hour. It may bebaked at up to 120°C (250°F) toaccelerate drying. The sealant

comes ready to use from its owncontainer; use G.E. #1500 or equiva-lent should a thinner be needed.XACTSEAL is a temporary sealant.For long term storage we recom-mend that the ends of the cable beseal welded.

440044//22550088 0.188 316 SS K 96% MgO 19 0.025 350 871 (1600)440011//11551111 0.250 Alloy 600 J 96% MgO 16 0.033 220 816 (1500)440011//22111111 0.250 Alloy 600 K 99.4% MgO 16 0.033 220 1177 (2150)440011//22551111 0.250 Alloy 600 K 96% MgO 16 0.033 220 1093 (2000)440022//11551111 0.250 304 SS J 96% MgO 16 0.033 220 816 (1500)440022//22551111 0.250 304 SS K 96% MgO 16 0.033 220 871 (1600)440033//22551111 0.250 310 SS K 96% MgO 16 0.033 220 1093 (2000)440044//11551111 0.250 316 SS J 96% MgO 16 0.033 220 816 (1500)440044//22551111 0.250 316 SS K 96% MgO 16 0.033 220 871 (1600)440011//22551122 0.313 Alloy 600 K 96% MgO 14 0.041 150 1093 (2000)440011//22551133 0.375 Alloy 600 K 96% MgO 13 0.052 100 1093 (2000)



XACTPAK CableSingle ElementContinued


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226

“F” .Dim.

“G” .Dim.

“D” .Dim.“E”

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“C” Dia.

“B” Dim.

“A” .Dia.

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0.125 +0.002 0.015 ± 0.002 0.014 ± 0.002 0.022 0.045 0.025 0.050-0.001

0.188 +0.002 0.023 ± 0.002 0.020 ± 0.002 0.034 0.068 0.037 0.074-0.001

0.250 +0.003 0.030 ± 0.005 0.027 ± 0.003 0.045 0.090 0.050 0.100-0.001

0.313 +0.003 0.038 ± 0.005 0.032 ± 0.003 0.056 0.112 0.062 0.124-0.001

AA BB WWaallll CC SSppaacciinngg NNoommiinnaallDDiiaammeetteerr TThhiicckknneessss DDiiaammeetteerr DD DDiimm.. EE DDiimm.. FF DDiimm.. GG DDiimm..

66 CCoonndduuccttoorr RRTTDD MMIIMMSS CCaabbllee

0.125 +0.002 0.015 ± 0.002 0.014 ± 0.002 0.022 0.045 0.025 0.050 0.034 0.068-0.001

0.188 +0.002 0.023 ± 0.002 0.020 ± 0.002 0.034 0.068 0.037 0.074 0.052 0.104-0.001

0.250 +0.003 0.030 ± 0.005 0.027 ± 0.003 0.045 0.090 0.050 0.100 0.068 0.137-0.001

0.313 +0.003 0.038 ± 0.005 0.032 ± 0.003 0.056 0.112 0.062 0.124 0.085 0.170-0.001

DD EE FF GG HH JJAA DDiimm.. BB DDiimm.. CC DDiimm.. DDiimm.. DDiimm.. DDiimm.. DDiimm.. DDiimm.. DDiimm..

2-3. Sheath Material01 = Alloy 60004 = 316 SS

4. Wire9 = Nickel 201

5. Wire Insulation 1 = 99.4% MgO5 = 96% MgO

6-7. Sheath O.D.07 = 0.125 inch diameter08 = 0.188 inch diameter11 = 0.250 inch diameter12 = 0.313 inch diameter8-10. Variation001 = 6-Wire003 = 4-Wire

4411 22 33 44 55 66 77 88 99 1100

// //99

“F” Dim.

“G” Dim.

“D” Dim.“E”

Dim.

“B” Dim.

“A” Dim.

MI Cable 252

“H” Dim.

“J” Dim.

“C” Dim.


XACTPAK CableMineral Insulated Metal-Sheathed RTD CableThis cable is used for makingrugged RTD probes. Special spac-ing allows room for elements to beplaced between conductors.Dimensions are shown below.

MMiinn

eerraall IInnssuu

llaatteeddMM

eettaall--SShh

eeaatthheedd

CCaabb

llee

227

W A T L O W

22--33.. SShheeaatthh MMaatteerriiaall01 = Alloy 600 18 = Hastelloy® X02 = 304 SS 19 = Inconel® 60103 = 310 SS 25 = Inconel® 62504 = 316 SS 32 = Haynes® Alloy 23005 = 347 SS 38 = Alloy HR-16013 = 446 SS 42 = Alloy 71816 = 321 SS 99 = Miscellaneous

44.. CCaalliibbrraattiioonn1 = J 4 = E 2 = K 8 = N 3 = T 9 = Misc.

55.. IInnssuullaattiioonn

0 = Unused 7 = Hafnia oxide1 = Magnesium oxide 99.4% 8 = Unassigned2 = Alumina oxide 99.6% 9 = Miscellaneous5 = Magnesium oxide 96%

66--77.. SShheeaatthh OO..DD.. [[iinncchh ((mmmm))]]01 = 0.020 11 = 0.250 19 = 0.025 58 = (8.0 ± 0.05)02 = 0.032 12 = 0.313 51 = (0.5 ± 0.02) 59 = (9.0 ± 0.05)03 = 0.040 13 = 0.375 52 = (1.0 ± 0.02) 99 = Miscellaneous04 = 0.063 14 = 0.430 53 = (1.5 ± 0.02)05 = 0.090 15 = 0.500 54 = (2.0 ± 0.03)06 = 0.114 16 = 0.010 55 = (3.0 ± 0.03)07 = 0.125 17 = 0.011 56 = (4.5 ± 0.03)08 = 0.188 18 = 0.0126 57 = (6.0 ± 0.05)

88--1100.. VVaarriiaattiioonnLeave blank = No variation EExxaammpplleess001 = Dual diagonal 401/2107050 = Dual adjacent 401/2107/SP051 = Triple element 402/1511/050/SP

1111--1122.. LLiimmiittss ooff EErrrroorrStandard = Leave blankSpecial limits = SP

4411 22 33 44 55 66 77 88 99 1100 1111 1122

Mineral Insulated,Metal-Sheathed Cable

In addition to our full line of metal-sheathed, mineral-insulated (MI) thermocouple cable, we will alsomanufacture metal-sheathed, mineral-insulated signal cable withcopper, stainless steel or other conductor materials to meet manyspecialized requirements. MI cableincorporating one or more conduc-tors can be made from a large variety of sheath and insulation materials. Properly selected combinations of materials provideMI cable with these outstanding performance features:• It is totally impervious to moisture.• It can withstand extremes of

temperature and pressure.• It can endure highly oxidizing or

corrosive conditions.• It adapts well to nuclear applica-

tions because of its low neutroncapture cross section which isunaffected by radiation heating.(Selected sheaths andcalibrations.)

• It can be easily formed to a radiusequal to approximately twice itsdiameter without insulation break-down. It maintains its shape afterforming.

// // //XACTPAK CableMade-to-order MineralInsulated (MI) Cable

Mineral Insulated Metal Sheathed Cable -

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