Thermocouple Grade
Thermocouple wire is used in the manufacture of thermocouple sensors and may be calibrated at temperatures above 200°C(392°F). It is exposed to high oven, furnace, and other process temperatures.
Thermocouple Extension Grade
Thermocouple extension vire is used to connect a thermocouple temperature sensor to a measurement or control device such as a transmitter, controller, recorder, or PLC. Extension wire is calibrated for operating temperatures below 200°C(392°F). Runs should not exceed 150 meters (500ft) with consideration for electrical noise pickup and grounding practices.
| ANSI Letter | Conductor Polarity & Material | |
|---|---|---|
| ( + ) | ( - ) | |
| T | Copper | Constantan |
| J | Iron | Constantan |
| E | Chromel | Constantan |
| K | Chromel | Alumel |
| R | Platinum | Platinum, 13% Rhodium |
| S | Platinum | Platinum, 10% Rhodium |
| B | Platinum,30% Rhodium | Platinum, 6% Rhodium |
| N | Nicrosil | Nisil |
| ANSI Letter | Single | Outer Jacket | Magnetic? | ||
|---|---|---|---|---|---|
| ( + ) | ( - ) | Yes | No | ||
| T | Blue | Red | Blue | (+) & (-) | |
| J | White | Red | Black | (+) | (-) |
| E | Purple | Red | Purple | (+) & (-) | |
| K | Yellow | Red | Yellow | (-) | (+) |
| R & S | Black | Red | Green | (+) & (-) | |
| B | Grey | Red | Grey | (+) & (-) | |
| N | Orange | Red | Orange | (+) & (-) |
- Thermocouple grade wire has a brown outer jacket.
- Braided insulations (ie. fibreglass) may have a coloured tracer
- Extruded insulations (ie. PVC) will be a solid colour
- The RED conductor is always of negative polarity.
- ANSI: American National Standards Institute, standard MC96.1
| Material | Cont. Op. Temp Range C&F |
|---|---|
| PVC - Polyvinyl Chloride | -40 to 105 °C (-40 to 221°F) |
| NYL - Nylon | -51 to 149 °C (-60 to 300°F) |
| FEP - Teflon | -68 to 260 °C (-90 to 500°F) |
| TZL - Tefzel | -68 to 260 °C (-90 to 500°F) |
| KAP - Kapton | -20 to 316 °C (-4 to 600°F) |
| FGG - Fibreglass | 0 to 482 °C (32 to 900°F) |
| HFG - High Temp. Fibreglass | 0 to 704 °C (32 to 1300°F) |
| CFR - Ceramic Fibre | 0 to 1204 °C (32 to 2200°F) |
- Kapton (KAP), Nylon (NYL), Teflon (FEP), Tefzel (TZL), Mylar ... Dupont Co
- Nextel (CFR) ... 3M Co.
- Chromel(K+), Alumel (K-) ... Hoskins Co.
- Alloy 11(R & S -) ... Harrison Driver Harris
- Alloy 30-6 ... Carpenter Technology
| ANSI Letter | Standard Limits of Error ( whichever is greater ) | Special Limits of Error ( whichever is greater) |
|---|---|---|
| T | +/- 1.0°C(1.8°F) or +/- 0.75% | +/- 0.5°C(0.9°F) or +/- 0.4% |
| J | +/- 2.0°C(4.0°F) or +/- 0.75% | +/- 1.1°C(2.0°F) or +/- 0.4% |
| E | +/- 1.7°C(3.1°F) or +/- 0.5% | +/- 1.0°C(1.8°F) or +/- 0.4% |
| K | +/- 2.2°C(4.0°F) or +/- 0.75% | +/- 1.1°C(2.0°F) or +/- 0.4% |
| R&S | +/- 1.5°C(2.7°F) or +/- 0.25% | +/- 0.6°C(1.1°F) or +/- 0.1% |
| B | +/- 0.5% | -- |
| N | +/- 2.2°C(4.0°F) or +/- 0.75% | +/- 1.1°C(2.0°F) or +/- 0.4% |
NOTE: Special quarter limits of error available upon request.
| ANSI Letter | Range |
|---|---|
| T | -184°C (-300°F) to 371°C (700°F) |
| J | 0°C (32°F) to 760°C (1400°F) |
| E | 0°C (32°F) to 871°C (1600°F) |
| K&N | 0°C (32°F) to 1260°C (2300°F) |
| R&S | 538°C (1000°F) to 1482°C (2700°F) |
| ANSI Letter | Standard Limits of Error ( whichever is greater ) | Special Limits of Error ( whichever is greater ) |
|---|---|---|
| TX | +/- 1.0°C (1.8°F) | +/- 0.5°C (0.9°F) |
| JX | +/- 2.0°C (4.0°F) | +/- 1.1°C (2.0°F) |
| EX | +/- 1.7°C (3.1°F) | +/- 1.0°C (1.8°F) |
| KX | +/- 2.2°C (4.0°F) | +/- 1.1°C (2.0°F) |
| RX & SX | +/- 5.0°C (9.0°F) | N/A |
| BX | +/- 5.0°C (9.0°F) | N/A |
| NX | +/- 2.2°C (4.0°F) | +/- 1.1°C (2.0°F) |
NOTE: Types R,S & B extension wire for Platinum thermocouples is Copper(+) and an Alloy of Copper (-).
| Conductor Gauge | Ansi Calibration | Ins. & Jacket Material | Options (Wire) | Options (Cable) |
|---|---|---|---|---|
| 16 or 16S | T or TX | PVC | "L" - Spec. Limits | |
| 18 or 18S | J or JX | NYL | of Error | |
| 20 or 20S | K or KX | FEP | "B" - Stainless Steel | |
| 24 or 24S | E or EX | TZL | Overbraid | |
| 30 or 30S | N or NX | KAP | "S" - Shield, Twisted | |
| RX, SX, or BX | FGG | with Drainwire | ||
| HFG | ||||
| CFR | ||||
[1] - "S" - Stranded conductor, otherwise solid
[2] - "X" - Extension Grade, otherwise Thermocouple Grade
MultiPair Thermocouple Extension Cable
Add to Options in above catalogue number as follows:- XPR - "X" No. of twisted pairs (ie. 4PR is 4 pairs), cabled
- OVS - Overall Al mylar shield with drainwire
- IOS - Individual pair and overall Al mylar shield with drainwire
- SIA - Steel (galvanized) interlocked armour, PVC jacket
- AIA - Aluminum interlocked armour, PVC jacket
- UUL - UL Approved for USA
- CUL - UL Approved for Canada
- CSA - CSA Certified
- FT4 - Flame Test 4 rated outer jacket
- CHL - Hazardous Locations rated
- 300 - 300 Volt insulation rating
- 600 - 600 Volt insulation rating
- SPE - Other special features
- #TT16S-K-FGG-B - Specifies #16 gauge stranded conductor, type K calibration, thermocouple grade, fibreglass insulation with stainless steel overbraid, single pair wire
- #TT20-JX-PVC-6PR-IOA-CSA-FT4-300 - Specifies #20 gauge solid conductor, type J calibration, extension grade, PVC insulation, 6 twisted pairs, individual & overall shield, CSA certified, Flame Test 4, 300V insulation rating, multipair cable
Email : sales@tempotechcontrols.com