Thermocouple Wire Types, Construction and Characteristics
(Order by Catalog Number, shown on pages 5 and 6)
| Type | Single Conductor | Overall | Temperature Rating | ANSI Color Coded | Insulation Properties | Remarks | ||||
| Insulation | Impregnation | Insulation | Impregnation | Continuous | Single
Reading |
Abrasion
Resistence |
Moisture
Resistence |
|||
| HtHt | Vitreous Silica Fiber .020″ | – | Vitreous Silica Fiber .020″ | – | 871°C
1600°F |
1093°C
2000°F |
No | Fair | Fair | |
| GgG | Double Glass Braid .012″ Wall | Modified Silicone | Glass Braid .006″ | Modified Silicone | 482°C
900°F |
538°C
1000°F |
Yes | Good | Good | Impregnation retained to 204°C (400°F) |
| GG | Glass Braid .006″ | Modified Silicone | Glass Braid .006″ | Modified Silicone | 482°C
900°F |
538°C
1000°F |
Yes | Fair | Good | Impregnation retained to 204°C (400°F) |
| TtGt | Fused Telfon Tape (TFE) .004″ | – | (TFE) Coated Glass Braid .006″ | – | 260°C
500°F |
316°C
600°F |
Yes | Fair | Very Good | |
| HgHg | High Temp Glass Braid .012″ | – | High Temp Glass Braid .012″ | Light Lacquer Coating | 704°C
1300°F |
871°C
1600°F |
No | Fair | Fair | Coating is retained to 149°C (300°F) |
| CfCf | Ceramic Fiber .015″ | – | Ceramic Fiber .020″ | – | 1204°C
2200°F |
1316°C
2400°F |
No | Good | Fair | |
| P | Polyvinyl .012″-.014″ | – | Rip Cord construction | – | -29 to +105°C
-20 to +221°F |
– | Yes | Good | Excellent | |
| TxTx | (FEP) Extr. .008″ | – | (FEP) Extr. .010″ | – | 204°C
400°F |
316°C
600°F |
Yes | Very Good | Excellent | |
| TfTf | (TFE) Tape Fused .008″ | – | (FEP) Tape Fused .008″ | – | 260°C
500°F |
316°C
600°F |
Yes | Good | Excellent | |
| TxTxZS | (FEP) Extr. .009″ | – | (FEP) Extruded .010″ Twisted; Alum.-Mylar Shield w/ Drain Wire | – | 204°C
400°F |
316°C
600°F |
Yes | Very Good | Excellent | |
| KZ | Fused Kapton Tape .004″ | – | None Twisted | – | 316°C
600°F |
427°C
800°F |
Yes (Tracers) | Excellent | Excellent | FEP binder melts at approx. 260°C (500°F) |
| KK | Fused Kapton
.006″ on 24 ga. .004″ on 20 ga. |
– | Fused Kapton
.006″ on 24 ga. .004″ on 20 ga. |
– | 316°C
600°F |
427°C
800°F |
Yes (Tracers) | Excellent | Excellent | FEP binder melts at approx. 260°C (500°F) |
| *Mylar, FEP, Kapton – Trade names of E. I. du Pont de Nemours & Co. | ||||||||||
