Thermocouple Wire & Cable

Transcription

1 Thermocouple Wire & Cable TRM Ltd & MICC Ltd Temperature House 21 Sedling Road Wear Industrial Estate Washington Tyne & Wear NE38 9BZ

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3 PVC Extruded Example Applications: Permanent Sensor Fabrication, Laboratories, Test Facilties, Short-run Extension Leads = Available as a UL construction. Prefix construction code with a U = Also available as a multi-pair construction 1 = Two singles twisted together without a jacket 2 = In multi-pair construction, outer shield only 3 = This construction code applies only to multi-pair cable PP: The least expensive jacketed extension wire insulation available. The PVC individual color-coded conductors are insulated with 15 mils (nominal) of PVC, then parallel conductors are given a 20 mil PVC jacket (35 mils for UL). The Jacket is easily stripped for separation of insulated conductors for assembly. PTW:The least expensive extension wire insulation available. The PVC individual color-coded conductors are insulated with 15 mils (nominal) of PVC, then twisted together. PTWP: The least expensive jacketed extension wire insulation available. The PVC individual color-coded conductors are insulated with 15 mils (nominal) of PVC, twisted together, then conductor pair(s) are given a 20 mil PVC jacket (35 mils for UL). The jacket is easily stripped for separation of insulated conductors for asembly. PAP: Single & Multipair cables with an overall shield are constructed by insulating the single conductors with PVC. One conductor of each pair is numbered and twisted with its counterpart. The twisted pairs are cabled with an insulated copper communications wire and the entire construction is wrapped with an aluminum/mylar tape shield. A copper drain wire is applied under the extruded PVC jacket. PAAP: This construction is the same as the PAP construction, with the addition of an aluminum/mylar tape and drain wire over each single pair in the construction in addition to the overall shield. This provides isolation for each separate pair in the construction and eliminates internal and external noise in the circuit

4 Teflon Extruded Example Applications: Power Generating Plants, Petroleum Plants, Field Heat Treating = Available as a UL construction. Prefix construction code with a U = PFA Teflon also available - substitute PF for T in code = Also available as a multi-pair construction 1 = Two singles twisted together without a jacket 2 = In multi-pair construction, outer shield only 3 = This construction code applies only to multi-pair cable = Teflon is a registered trademark of E.I. DuPont TT: Color-coded FEP Teflon is extruded over each single conductor. The single insulated conductors are laid parallel and insulated with an extruded jacket of FEP Teflon TTW:Color-coded FEP Teflon is extruded over each single conductor. Insulated conductors are twisted together. TTWT: Color-coded FEP Teflon is extruded over each single conductor. The single insulated conductors are twisted and insulated with an extruded jacket of FEP Teflon. TAT: Color-coded FEP Teflon is extruded over each single conductor. Insulated conductors are twisted with a stranded drain wire, and the twisted construction is covered with an aluminum/mylar tape. A FEP Teflon jacket is extruded over the shielded pairs or triads.

5 TAAT: Color-coded FEP Teflon is extruded over each single conductor. Insulated conductors are twisted with a stranded drain wire and shielded.the pairs are cabled together and the entire construction is wrapped with an aluminum / Mylar tape shield. A copper drain wire is applied under the shield. A FEP¹ Teflon jacket is extruded over the shielded pairs or triads.

6 Fiberglass Braided Example Applications: Heat Treating, Glass & Ceramic Kilns, Foundries, Extensive applications in aluminum processing, Preheating & Stress Relieving of Forgings, Heat Treating for annealing, aging, or hardening, Homogenizing furnaces for billet preheating, Furnace Temperature Surveys = All fiberglass is impregnated with a hightemperaure resin to increase durability and reduce fraying. GG: Most popular and widely applied of all glass insulations. A colorcoded fiberglass braid saturated with a high-performance resin is used for insulation of the single conductors and jacket. Abrasion Resistance - Fair HGHG: A high-temperature, high tensile strength fiberglass, either colorcoded or with tracer yarn, is braided on both the single conductors and the overall jacket. Both are impregnated with a 500ºF modified resin saturant. Abrasion Resistance - Fair Relative Cost - Medium STW: A high temperature, high tensile strength, extra heavy fiberglass yarn is braided over each conductor. The insulated, color-coded conductors are impregnated with a high-temperature modified resin and twisted to form a pair. This product construction does not include an overall jacket. Abrasion Resistance - Fair

7 Synthetic Braided Example Applications: Replacement for beaded thermocouples, heat treating, coke ovens, soaking pits, furnace survey thermocouples, brick & tile kilns, closed tubes or protective atmospheres, glass and ceramic manufacturing, metalworking plants = This product has a saturant on the singles and jacket = This product has a light saturant on the jacket to help prevent fraying CFCF: Highest temperature flexible insulation available. The braided yarn is a composition of the oxides of alumina, boric and silicone. Each conductor as well as the overall jacket are braided with this high temperature yarn to provide maximum flexibility at extremely high temperatures. Abrasion Resistance - Poor Moisture Resistance - Poor MCFCF:This construction has a mica barrier tape applied to each single conductor prior to being insulated with the ceramic fiber yarns. The construction is identical to the CFCF construction except for the addition of a light jacket saturant and the mica tape, which protects against potential shorting from the black carbon residue which forms when the product is used in applications where the air supply is limited, such as thermocouples in protection tubes. The mica may also provide moisture protection during temperature cycling. RR: High temperature silica fibers are braided on the single conductors as well as the overall jacket. Because saturant is not used, this product is not recommended for abrasive applications. Each conductor as well as the overall jacket are braided with this high temperature yarn to provide maximum flexibility at extremely high temperatures. A tracer is braided into insulation for polarity and calibration identification. Abrasion Resistance - Poor SFSF: Tough, heavy insulation for use where abrasion resistance on braided insulation is required. Conductors are insulated with a braided composite synthetic yarn* & impregnated with a color-coded moisture resistant saturant. The insulated conductors are laid parallel & insulated with a heavy yarn composite synthetic fiber jacket which is then coated with the same saturant. Relative Cost - Medium

8 Taped Products Example Applications: Power Plants, Kilns, Petroleum Plants, Aerospace Industry, Cryogenic Applications, Aircraft Bonding, Glass, Ceramic & Brick Applications = Available as a UL construction. Prefix construction code with a U = PFA Teflon also availiable - substitute PF for T in code 1 = Singles and jacket are each double-wrapped = Kapton and Teflon are registered trademarks of E.I. DuPont KK: Very tough, durable double wrap of heat-fused polyimide tape is applied over each conductor. Each insulated single conductor is coated with an ANSI color-coded polyimide varnish. The jacket consists of a double-wrapped heat-fused polyimide tape. Chemical Resistance - Good KAK: Very tough, durable double wrap of heat-fused polyimide tape is applied over each conductor. Insulated conductors are twisted with a stranded drain wire and the twisted construction is covered with aluminum / Kapton tape. The outer jacket consists of a doublewrapped heat-fused polyimide tape. Chemical Resistance - Good TFTF: A double wrap of heat-fused TFE tape is spirally applied over each single conductor and as an overall jacket. Duplex construction. Chemical Resistance - Good TFATF: Very tough, durable double wrap of heat-fused TFE tape is applied over each conductor. Insulated conductors are twisted with a stranded drain wire and the twisted construction is covered with aluminum / Kapton tape. The outer jacket consists of a doublewrapped heat-fused TFE tape. Chemical Resistance - Good

9 Protective Overbraid Information Most wire types can be strengthened by addition of a protective Overbraid. S: General Purpose Stainless Steel, subject to carbide precipitation between 900ºF and 1600ºF To order, use suffix -S after part number (Example: J-20-GG becomes J-20-GGS) Cu: Shields against external electrostatic interference. To order, use suffix -TC after part number (Example: J-20-GG becomes J-20-GGTC) I600: Excellent for severely corrosive applications and has high resistance to oxidizing and reducing atmospheres. To order, use suffix -IB after part number (Example: J-20-GG becomes J-20-GGIB) X: Better resistance to crushing and cutting than braided coatings To order, use suffix -X after part number (Example: J-20-GG becomes J-20-GGX)