Specifications Conform to ANSI Color Codes and ISA Published Limits of Error
Wirecraft insulated Thermocouple wires can be made as singles, parallel jacketed pairs or per customer specified special constructions which may include SPC, TPC, NPC or stainless steel braiding.
Insulations available are PTFE, FEP, PFA, ETFE, KAPTON* as well as Glass Braiding. Our Glass Braid insulations can be saturated with PTFE, UV Resin or Silicone.
Thermocouple Wire Accuracy (32°F)
| Limits of Error | |||||
|---|---|---|---|---|---|
| Type | Temperature Range | Ansi Standard | Ansi Special | BS4937 Class 2 | BS4937 Class 1 |
| J | 0° to 293°C (32° to 559°F) 293° to 750°C (559° to 1382°F) |
±2.2°C (4.0°F) ±.75% |
±1.1°C (2.0°F) ±.4% |
||
| -40° to 375°C (-40° to 707°F) 375° to 750°C (707° to 1382°F) |
±1.5°C (2.7°F) ±.4% |
||||
| -40° to 333°C (-40° to 631°F) 333° to 750°C (631° to 1382°F) |
±2.5°C (4.5°F) ±.75% |
||||
| K, N | 0° to 293°C (32° to 559°F) 293° to 1250°C (559° to 2282°F) |
±2.2°C (4.0°F) ±.75% |
±1.1°C (2.0°F) ±.4% |
||
| -40° to 375°C (-40° to 707°F) 375° to 1000°C (707° to 1832°F) |
±1.5°C (2.7°F) ±.4% |
||||
| -40° to 333°C (-40° to 631°F) 333° to 1200°C (631° to 2192°F) |
±2.5°C (4.5°F) ±.75% |
||||
| T | 0° to 133°C (32° to 271°F) 133° to 350°C (271° to 662°F) |
±1°C (1.8°F) ±.75% |
±.5°C (.9°F) ±.4% |
||
| -40° to 125°C (-40°F to 257°F) 125° to 350°C (257° to 662°F) |
±.5°C (.9°F) ±.4% |
||||
| -40° to 133°C (-40°F to 271°F) 133° to 350°C (271° to 662°F) |
±1°C (1.8°F) ±.75% |
||||
| E | 0° to 340°C (32° to 644°F) 340° to 900°C (644° to 1652°F) |
±1.7°C (3.1°F) ±.5% |
±1°C (1.8°F) ±.4% |
||
| 340° to 900°C (644° to 1652°F) -40° to 375°C (-40° to 707°F) |
±1.5°C (2.7°F) ±.4% |
||||
| -40° to 333°C (-40°F to 631°F) 333° to 900°C (631° to 1652°F) |
±2.5°C (4.5°F) ±.75% |
||||
ANSI CALIBRATION AND COLOR CODE
THERMOCOUPLE GRADE
| Calibration Symbol | Positive(+) | Negative(-) | PTFE/FEP Jacket | Glass Jacket |
|---|---|---|---|---|
| J | Iron-White | Constantan-Red | Brown | Brown/Black |
| K | Chromel*-Yellow | Alumel*-Red | Brown | Brown/Yellow |
| T | Copper-Blue | Constantan-Red | Brown | Brown/Blue |
| E | Chromel*-Purple | Constantan-Red | Brown | Brown/Purple |
EXTENSION GRADE
| Calibration Symbol | Positive(+) | Negative(-) | PTFE/FEP Jacket | Glass Jacket |
|---|---|---|---|---|
| JX | Iron-White | Constantan-Red | Black | Black |
| KX | Chromel*-Yellow | Alumel*-Red | Yellow | Yellow |
| TX | Copper-Blue | Constantan-Red | Blue | Blue |
| EX | Chromel*-Purple | Constantan-Red | Purple | Purple |
*KAPTON is a registered trademark of DuPont
* Hoskins Trademark