The standard insulated thermocouple extension wires generally available for base and noble metal thermocouple installations. By using the tabulated wire insulation data below, one can select a wire suitable for most process applications. When process conditions require the use of a special construction wire, please provide complete process requirements and specifications with your request for quotation. Minimums of 2,000 feet are generally required for special constructions.
| Items |
 155 ServTex Insulator |
157 ServTex Insulator |
303 Fiberglass Insulator |
502 Polyvinyl Insulator |
503 Polyvinyl Insulator |
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| Description | The standard insulated thermocouple extension wires generally available for base and noble metal thermocouple installations. By using the tabulated wire insulation data below, one can select a wire suitable for most process applications. When process conditions require the use of a special construction wire, please provide complete process requirements and specifications with your request for quotation. Minimums of 2,000 feet are generally required for special constructions. | |||||||||
| Brands | Pyromation® | |||||||||
| Insulation Type | ServTex | ServTex | ||||||||
| Materials | Fiberglass | Fiberglass | Fiberglass | Polyvinyl | Polyvinyl | |||||
| Single Conductor Insulation | Heavy Fiberglass Braid Single Insulation | Tetrafluoroethylene (TFE) Tape (not fused). Heavy Fiberglass Braid Single Insulation | Enamel/Glass Braid 0.006 in. | Polyvinyl Extrusion 0.012 in. to #20; #16 to 0.018 in. | Polyvinyl Extrusion 0.015 in. | |||||
| Single Conductor Impregnation | Moisture Resistant Impregnation | Modified Resin | Modified Resin | None | None | |||||
| Duplex Conductor Insulation | ServTex Braid | ServTex Braid | Glass Braid 0.006 In. | Polyvinyl Extrusion, 0.016 in. | Twisted with Cotton Filler; Polyvinyl Chloride (PVC) 0.030 in. | |||||
| Duplex Conductor Impregnation | Ceramic-like Impregnation | Moisture Resistant Compound | Modified Resin | None | None | |||||
| Continuous Temperature Rating | 288 ºC550 ºF | 288 ºC550 ºF | 482 ºC900 ºF | -29 to 105 ºC-20 to 221 ºF | -29 to 105 ºC-20 to 221 ºF | |||||
| Temperature Rating (ASTM/ANSI SQL Reading) | 343 ºC650 ºF | 343 ºC650 ºF | 538 ºC650 ºF | |||||||
| Color Code | Yes | |||||||||
| Abrasion Resistance | Good | |||||||||
| Moisture Resistance | Fair | Fair | Fair | Excellent | Excellent | |||||
| Note | Impregnation retained to 200 ºC (400 ºF) | Impregnation retained to 204 ºC 400 ºF]: Tetrafluoroethylene (TFE) good to 260 ºC 500 ºF] | Impregnation retained to (204 ºC 400 ºF) | Stranded conductors only | ||||||
| Note for Temperature Rating | Thermocouple extension grade wire is only calibrated up to 204 ºC (400 ºF) | |||||||||
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