Products Description

I. Core Parameters

Parameter Category	Specific Specifications / Parameter Values
Model Codes	K, N, E, J, T
Mineral Insulated Metal Sheath (MIMS) Material	Stainless steel, heat-resistant steel, high-temperature alloy, corrosion-resistant alloy, etc. (including SUS304, 316L, 310S, Inconel 600, etc.)
Mineral Insulated (MIMS) Cable Diameter	φ1, 2, 3, 4, 5, 6, 8, 10mm (for thermocouples only)
Length	Minimum not less than 50mm, customizable
Wiring Methods	Simple type, plug type, waterproof type, explosion-proof type, etc.
Installation Methods	No installation, threaded installation (e.g., 1/2"NPT thread), flange installation, etc.
Thermal Response Time	τ0.5≤30s (common range); the smaller the sheath diameter, the shorter the response time
Thermoelement Material	K type: NiCr10-NiSi3; N type: NiCrSi-NiSiMg; E type: NiCr-Constantan; J type: Fe-Constantan; T type: Copper-Constantan

Mineral insulated thermocouple Limit Of Error

Thermoelement	Type	Limits Of Error(±℃)/Effective Temperature Range(℃)
Thermoelement	Type	1 class	2 class	3 class
NiCr10-NiSi3	K	1.5 or 0.4%t/-40~1000	2.5 or 0.75%t/-40~1200	2.5 or 1.5%t/-40~200
NiCrSi-NiSiMg	N	1.5 or 0.4%t/-40~1000	2.5 or 0.75%t/-40~1200	2.5 or 1.5%t/-40~200
NiCr-Constantan	E	1.5 or 0.4%t/-40~800	2.5 or 0.75%t/-40~900	2.5 or 1.5%t/-40~200
Fe- Constantan	J	1.5 or 0.4%t/-40~750	2.5 or 0.75%t/-40~750	--
Copper- Constantan	T	0.5 or 0.4%t/-40~350	1.0 or 0.75%t/-40~350	1.0 or 1.5%t/-200~40

II. Product Features

Integrated Structure with High Flexibility: Formed into a small-diameter non-removable flexible entity (MIMS cable) through repeated drawing and shrinking. Easy to bend and use, suitable for complex installation spaces.

Fast Thermal Response: The thermal response time is positively correlated with the sheath diameter. The common range of τ0.5≤30s can meet the needs of most dynamic temperature measurement scenarios.

Wide Type Adaptability: Covers five models (K, N, E, J, T). Different models have different error classes and temperature ranges, which can match various environments such as oxidation and reduction, as well as high and low temperature working conditions.

Diversified Application Functions: Can replace assembled thermocouples in most occasions, and can also be used as the core thermocouple wire of assembled thermocouples to improve durability; MIMS cables are suitable for mass production and adapt to large-scale applications.

Excellent Protection Performance: The sheath can be selected from various corrosion-resistant and high-temperature resistant materials such as stainless steel and high-temperature alloy, which can resist the erosion of harsh industrial environments and extend the service life.

III. Related Component Specifications

Mineral Insulated (MIMS) Cable

Diameter: φ1mm, φ2mm, φ3mm, φ4mm, φ5mm, φ6mm, φ8mm, φ10mm for thermocouples only.

Material: Stainless steel (SUS304, 316L, 310S), Inconel 600, heat-resistant steel, high-temperature alloy, corrosion-resistant alloy, etc., with excellent high-temperature resistance and corrosion resistance.

Processing Technology: Formed by repeated drawing and shrinking, integrated non-removable structure.

Thermoelement

Corresponding to K, N, E, J, T type thermoelectric materials, accurately matching the error class and temperature range of each model to ensure stable output of thermoelectric signals.

Connection and Installation Components

Wiring Components: Simple type, plug type, waterproof type, explosion-proof type terminal blocks, equipped with fiberglass wires.

Installation Accessories: Threaded joints (e.g., 1/2"NPT), flange connectors, protective caps, compression fittings, supporting no installation, threaded, flange and other installation methods.

Customized Accessories: Probe size and wire length can be customized according to requirements.

IV. Application Scenarios

With its flexible structure and diversified adaptability, mineral insulated thermocouples are widely used in various industrial temperature measurement scenarios, mainly including:

Automotive Industry: Engine temperature monitoring, battery thermal management systems (serving enterprises such as BYD Auto).

Aerospace Field: Environmental temperature measurement of test chambers, temperature detection of key components of aviation equipment (serving units such as AVIC Industry, AECC, and China Aerospace).

Petrochemical Industry: Temperature monitoring of pipelines and reactors in high-temperature and corrosive environments.

Power Industry: Temperature control and monitoring of power plant boilers, steam turbines, transformers and other equipment.

Metallurgical and Building Materials Industry: Temperature detection of high-temperature equipment such as smelting furnaces and cement kilns, and temperature control in production processes.

Scientific Research and Education Institutions: Temperature measurement experiments in laboratories of institutions such as Tsinghua University and National University of Defense Technology.

General Industrial Scenarios: Temperature measurement of various industrial equipment that requires flexible installation, fast response, corrosion resistance or high-temperature resistance (such as semiconductor manufacturing, chemical reaction kettles, etc.).

V. Product Advantages

Flexible and Convenient Installation: The integrated flexible structure is easy to bend, supports multiple installation methods, adapts to narrow and complex installation spaces, and reduces installation difficulty.

Stable and Reliable Performance: Clear error classes, stable thermoelectric signal transmission, verified by mass production, suitable for long-term industrial use with a long service life.

Strong Environmental Adaptability: A variety of sheath materials and model combinations can cope with harsh working conditions such as high temperature, corrosion and vibration, as well as different environmental requirements such as oxidation and reduction.

Outstanding Cost-Effectiveness: MIMS cables are suitable for mass production, reducing manufacturing costs; can replace assembled thermocouples, saving custom assembly costs, and adapting to large-scale projects.

Guaranteed Quality: The manufacturer has mature manufacturing technology and multiple quality certifications. The products serve many well-known enterprises with rich application cases and stable quality.

VI. Frequently Asked Questions (FAQs)

How to select different models of mineral insulated thermocouples?

Answer: For high-temperature oxidation environments (-40~1200℃), K/N type can be selected, and N type has better high-temperature stability; for scenarios requiring high thermoelectric output (-40~900℃), E type is suitable; J type is adapted to reducing atmospheres (-40~750℃); T type is recommended for low-temperature and high-precision scenarios (-200~350℃), with a Class 1 error of only ±(0.5 or 0.4%t)℃.

What factors affect the thermal response time? How to improve the response speed?

Answer: It is mainly affected by the sheath diameter; the smaller the diameter, the faster the response. In addition, it is related to the sheath material and the measured medium. For fast response, φ1~3mm small-diameter sheath can be selected, combined with a contact method with good thermal conductivity of the measured medium.

Can mineral insulated thermocouples be disassembled for maintenance?

Answer: No. The product has an integrated non-removable structure. If damaged, it needs to be replaced as a whole, and internal components cannot be disassembled for maintenance. It is recommended to regularly check the protection status.

What should be paid attention to when selecting the sheath material?

Answer: SUS304/316L stainless steel can be selected for ordinary industrial environments; 310S stainless steel or Inconel 600 is recommended for high-temperature working conditions above 800℃; corrosion-resistant alloy sheaths are required for corrosive environments such as chemical industry; high-temperature alloy materials with high strength are preferred for scenarios with severe vibration.

Is the product compatible with existing industrial temperature measurement systems?

Answer: Yes. It supports various wiring methods such as simple type and plug type, and can be seamlessly integrated with conventional PLC, DCS and temperature controllers without additional adaptation equipment, resulting in low integration costs.