Iron/Constantan Wire Chromel/Constantan 0.05mm-12mm Thermocouple
Wire Used For Thermocouple Sensor
How many thermocouple wire types are there?
There are several types of thermocouple wires, each identified by a
letter designation. The most common types of thermocouple wires
are:
Type K: Chromel/Alumel - One of the most popular and widely used
thermocouple types. It has a wide temperature range and good
accuracy. It is commonly used in various industries.
Type J: Iron/Constantan - Suitable for general-purpose applications
in the range of -210°C to 1200°C. It has a lower cost compared to
Type K.
Type T: Copper/Constantan - Known for good accuracy and stability
at low temperatures. It is often used in cryogenic applications.
Type E: Chromel/Constantan - Suitable for applications with a
temperature range of -270°C to 1000°C. It has high accuracy and is
commonly used in food industry applications.
Type N: Nicrosil/Nisil - Offers good accuracy and stability,
especially at high temperatures. It is commonly used in aerospace
and nuclear applications.
Type S: Platinum/Rhodium - Known for high accuracy and stability at
high temperatures, up to 1600°C. It is often used in the
pharmaceutical and chemical industries.
Type R: Platinum/Rhodium - Similar to Type S but with a slightly
different temperature range, up to 1600°C. It is commonly used in
high-temperature applications.
Type B: Platinum/Rhodium - Offers excellent accuracy and stability
at very high temperatures, up to 1700°C. It is typically used in
high-temperature applications in industrial settings.
Each type of thermocouple wire has its own unique characteristics,
temperature range, and applications where it is most suitable. The
selection of the appropriate type of thermocouple wire depends on
factors such as the temperature range of the application, accuracy
requirements, environmental conditions, and cost considerations.
K Type Thermocouples
K-type thermocouple wire is a common type of thermocouple composed
of two different metal alloys: nickel/silicon alloy (usually
referred to as KN or KNX) and nickel/chromium alloy (usually
referred to as KP or KPX).
These two alloys have different thermoelectric properties at
different temperatures, which can generate a thermoelectric
potential difference for temperature measurement. The working
temperature range of K-type thermocouple wires is usually between 0
° C and 1200 ° C, and it is one of the commonly used temperature
sensors in many industrial and laboratory applications.
They have good linear characteristics and relatively high accuracy,
and their stability at high temperatures is relatively good, so
they are widely used in some high-temperature environments.
The connectors of K-type thermocouple wires often use standard
K-type plugs, allowing them to be connected to various temperature
measuring devices, control systems, recorders, etc., facilitating
temperature measurement and data acquisition. Due to the
reliability and applicability of K-type thermocouple wires, they
are widely used in various industries such as metallurgy,
petrochemicals, energy production, and food processing
Types of Thermocouples
What differentiates one thermocouple from another is the metals in
its two wires: the positive leg and the negative leg. Because each
thermocouple type has a different pairing, they differ in
temperature limits, process conditions (inert, oxidizing, reducing
atmospheres, heavy vibration), and so on.
Thermocouple Types and Temperature Range
Conductor Name |
Thermocouple Type | Grade |
Temperature range ℃ | Allowable Tolerance /℃ |
| PtRh30-PtRh6 | B | Ⅱ | 600~1700 | ±0.25% t |
| Ⅲ | 600~800 | ±4 |
| 800~1700 | ±0.5%t |
| PtRh13-Pt | R | Ⅰ | 0~1100 | ±1 |
| 1100~1600 | ±[1+(t－1100) ×0.3％] |
| Ⅱ | 0~600 | ±1.5 |
| 600~1600 | ±0.25% t |
| PtRh10-Pt | S |
Ⅰ | 0~1100 | ±1 |
| 1100~1600 | ±[1+(t－1100) ×0.3％] |
Ⅱ | 0~600 | ±1.5 |
| 600~1600 | ±0.25% t |
| NiCr-Ni | K | Ⅰ | -40~1100 | ±1.5℃ or ±0.4%t |
| Ⅱ | -40~1300 | ±2.5℃ or ±0.75%t |
| Ⅲ | -200~40 | ±2.5℃ or ±1.5%t |
| NiCrSi-NiSi | N | Ⅰ | -40~1100 | ±1.5℃ or ±0.4%t |
| Ⅱ | -40~1300 | ±2.5℃ or ±0.75%t |
| Ⅲ | -200~40 | ±2.5℃ or ±1.5%t |
| NiCr-CuNi (Constantan) | E | Ⅰ | -40~1100 | ±1.5℃ or ±0.4%t |
| Ⅱ | -40~1300 | ±2.5℃ or ±0.75%t |
| Ⅲ | -200~40 | ±2.5℃ or ±1.5%t |
| Fe-CuNi (Constantan) | J | Ⅰ | -40~750 | ±1.5℃ or ±0.4%t |
| Ⅱ | -40~750 | ±2.5℃ or ±0.75%t |
| Cu-CuNi (Constantan) | T | Ⅰ | -40~350 | ±0.5℃ or ±0.4%t |
| Ⅱ | -40~350 | ±1.0℃ or ±0.75%t |
| Ⅲ | -200~40 | ±1.0℃ or ±1.5%t |
Application of thermocouple wire:
1. Industrial Process Optimization
2. HVAC Systems Management (Heating, Ventilation, and Air
Conditioning (HVAC))
3. Precision in Food Processing
4. Medical Equipment and Devices
5. Automotive Performance Optimization
6. Aerospace Exploration and Innovation
7. Power Generation and Distribution
8. Laboratory Research and Development
9. Energy Management and Conservation
10. Safety and Security Enhancement.
The Delivery and Packing:
1. Packaging Details: 500m/1000m per roll with plastic film wrapped
and carton package.
2. Delivery Detail: 7 days, as the order quantity.
Thermocouple products shape:
Wire, Rod, bar,
More pictures of thermocouple wire:
Application for thermocouple sensor:
Application for extension cable:
With Insulation
About us
Shanghai Tankii Alloy Material Co., Ltd. specialized in production of thermocouple wire, thermocouple cable, thermocouple connector, and
other thermocouple products.
Based on the principle of “first quality, sincere service”, our
managing ideology is pursuing technology innovation and creating
the top brand in the alloy field. We persist in Quality - the
foundation of the survival. It is our forever ideology to serve you
with full heart and soul. We committed to provide customers all
over the world with high-quality, competitive products and perfect
service.
Our products, such us nichrome wire, nichrome strip, fecral wire,
fecral strip, thermocouple wire, nickel wire, nickel strip have
been exported to Europe, USA, India, Southest Asia, South
America,etc.
We are willing to establish strong and long-time partnership with
our customers
Welcome to call me or email to me for more info on thermocouple wire.
