Your Professional Armored Thermocouple Supplier
Xian Baochen Information Technology Co., Ltd. is located in high-tech Zone, Xi 'an, Shaanxi Province, China, is a focus on sensors, transmitters, inverters, power semiconductor devices and supporting instruments R & D, manufacturing, sales and service enterprises. The company invests in research and development team, cooperates with excellent universities, integrates industry resources, and provides the best quality solutions for domestic and foreign users. Enterprise mission: to meet user needs and create value for customers.
Why choose us
Sales Market
We Products are exported to Europe, America, Southeast Asia, West Asia, Central Asia and other countries around the world. Our products are well received in these markets.
Our Service
Able to quickly respond to customer needs, to provide personalized customization, timely delivery, professional technical support and perfect after-sales service.
Strict Quality Control System
Able to efficiently produce large quantities of products, advanced production processes and stable supply chains, the implementation of strict quality control system. Constantly introduce new technologies and new materials to improve product performance and production efficiency.
Wide Range of Applications
Through the EU CE, RoHs testing, products are widely used in petrochemical, water conservancy and hydrology, machinery and equipment, automobile manufacturing, industrial process control, weighing measurement, people's livelihood applications and other fields.
Armored Thermocouple
Armored thermocouples have the advantages of being able to bend, withstand high pressure, fast response times and ruggedness. Armored thermocouples, like assembled thermocouples, are used as sensors for measuring temperature, usually with armored thermocouples and display instruments, Electronic regulator supporting the use of the same time, armored thermocouple can also be used as assembly thermocouple temperature sensor. Armored thermocouples can directly measure the temperature of liquids, vapors and gaseous media and solid surfaces from 0 ° C to 1100 ° C in various production processes.
|
Technical specification |
|
|
Product name |
Armored thermocouple |
|
International standard scale |
K(default)/E/PT100 |
|
Measuring range |
0-800 degrees (long term)/ Customizable (0-1100 degrees 2520 material, 0-1300 degrees 3039 material) |
|
Probe material |
304 stainless steel (default)/ customizable and corroded 316 or high temperature resistant 2520 and 3039 materials |
|
Probe diameter |
1.5 mm / 2 mm / 3 mm / 4 mm / 5 mm / 6 mn / 8 mm / 10 mm |
|
Probe length |
50mm-100000mm Optional |
|
Installation mode |
Smooth rod without fixed device (default)/ customized welding fixed thread, movable sleeve thread, movable flange, sanitary blind flange, etc |
|
Buyer's notice |
The diameter of the probe is nuclear phase, the temperature resistance core is high, the smaller the diameter of the probe, the more sensitive the reaction. Please try to provide the actual operating temperature range so that we can adapt the appropriate diameter and material |
Features of Armored Thermocouple
High Pressure/Corrosion Resistance
The armored structure can withstand pressures of tens of MPa, making it suitable for corrosive environments (such as chemical reactors).
Fast Response
The probe has a small diameter (typically 1mm to 6mm) and a fast thermal response time (up to 0.1 seconds).
Flexible or Rigid Options
Some models can be bent for installation in complex spaces. Wide Temperature Range: Depending on the thermocouple type (e.g., K, J, T), covers -200°C to 1200°C.
Resistant To Vibration And Shock
The metal sheath and the MI cable protect the conductors from shock and vibration, preventing breakage and making sheathed thermocouples highly resistant to mechanical stresses.
Resistant To Corrosion And Aggressive Media
316 stainless steel has good resistance against aggressive media and the vapor and flue gases in chemical media. The corrosion-resistant properties of Alloy 600 make it particularly well suited for thermocouples that have to deal with high temperatures. It also withstands cracking and pitting in media that contains chlorine, and corrosion produced by hydrogen chloride or ammonia in aqueous solutions.
Small And Flexible
The protective metal sheath allows for finer conductors and a more compact design than those of unsheathed thermocouples. Sheathed thermocouples' diameter can be as small as 0.25 mm (0.010″) without compromising the integrity of the instrument. The metal sheath also gives flexibility, which allows bending without damaging the sensing element.sheathed thermocouples are particularly useful for temperature measurement in small spaces and in tight corners.
Conductivity And High Temperature Limits
The metal sheath tolerates very high air temperatures: Up to 850°C (1,562°F) for 316 stainless steel, and up to 1,200°C (2,192°F) for Alloy 600 – depending on thermocouple type. The sheath also provides better heat conduction than unsheathed thermocouples, thereby decreasing thermal lag time and resulting in even faster responses.

S1 type thermocouple
The S1 type thermocouple belongs to the class of precious metal thermocouples, which makes it ideal for high-temperature applications. It is made of platinum and rhodium alloy wire.
S2-type thermocouple
This is similar to the S1 type in terms of materials but replaces the rhodium with 6% of the second alloy of the S2 type with 94% platinum.
Steel thermocouples
Hypothetical example of an armored thermocouple that is protected in a metal sheath made of steel, which keeps the sensor safe even in harsh environments.
J-type thermocouples
The J-type thermocouple is a versatile temperature sensor that is widely used in many situations. It is one of the more affordable options on the market and features a combination of iron and constantan wires. It generates a millivolt electrical reading that is then converted into a temperature reading.
XG type thermocouples
The XG type thermocouple is a special temperature-sensing device that engineers designed for extreme conditions. It consists of wires made from Inconel X750 and chromel, which are strong and resistant to breakage even when exposed to extremely high temperatures over a long time.
Application of Armored Thermocouple
Industrial Processes
Furnace, pipeline fluid, and steam temperature monitoring.
Laboratory
Accurate temperature measurement of test tube solutions, ovens, and thermostatic baths.
Food and Pharmaceuticals
Temperature verification in sterilization equipment and cold chain logistics.
Energy
Real-time temperature feedback for engines and boilers.
Core Structure and Components of Armored Thermocouple
Thermocouple core
Welded from two dissimilar metals (such as K-type nickel-chromium-nickel-silicon), it generates a temperature differential voltage through the thermoelectric effect.
Armor Protection
A metal sheath (usually stainless steel or Inconel) surrounds the thermocouple wire, filled with magnesium oxide insulating powder to provide mechanical protection and electrical insulation.
Probe Design
Probes with either a pointed or flat tip are easily inserted into the measured medium (such as liquids, solids, or gases).

The working principle of the armored thermocouple: The two ends of two conductors with different compositions are welded to form a loop. The direct temperature measurement end is called the measuring end, and the connecting end is called the reference end. When there is a temperature difference between the measuring end and the reference end, a corresponding temperature value of the thermoelectromotive force will be generated in the loop.
The thermal electromotive force of the armored thermocouple will increase as the temperature of the measuring end increases. The size of the thermal electromotive force is only related to the material of the armored thermocouple conductor and the temperature difference between the two ends, and has nothing to do with the length and diameter of the thermocouple.
The structure of the armored thermocouple is made of conductors, insulating magnesium oxide and 1C18N9Ti stainless steel protective tubes that are drawn multiple times. The armored thermocouple products mainly consist of a junction box, terminal blocks and an armored thermocouple. The basic structure is composed of Composed of various installation fixtures.
Installation and Usage Precautions
Insertion Depth: Must reach the effective heat exchange area of the measured medium (typically ≥5 times the probe diameter).
Avoid stress: The bending radius should not be too small (e.g., armored pipe ≥ 5 times its outer diameter).
Ground interference: In strong electromagnetic environments, choose an insulated or three-wire design for interference resistance.
FAQ
As one of the leading armored thermocouple manufacturers and suppliers in China, we warmly welcome you to wholesale cheap armored thermocouple in stock here from our factory. All customized products are with high quality and competitive price.
armored thermocouple