Products Description

MI thermocouple becomes a small-diameter non-removable flexible entity through repeated drawing and shrinkage. Cut the MIMS Cable into the required length, make a hot end and wiring terminal, and assemble the necessary mounting bracket and wiring components to become an MIMS thermocouple. The products include standard type, connection metal sleeve type, and used-for-assembly-as-core type, etc.

I. Core Parameters

Parameter Category	Specific Specifications / Parameter Values
Type Codes	K, N, E, J, T
MIMS Sheath Materials	Stainless steel, heat-resistant steel, high-temperature alloy, corrosion-resistant alloy, etc.
MIMS Cable Diameters	φ1, 2, 3, 4, 5, 6, 8, 10 (for thermocouple)
Length	Minimum no lesser than 50mm
Wiring Methods	Simple type, plug type, waterproof type, explosion-proof type, etc.
Installation Methods	None, threaded installation, flange installation, etc.
Thermal Response Time	τ0.5≤30s (common range); the smaller the sheath diameter, the shorter the response time
Thermocouple Temperature Ranges	K type: -40~1200℃; N type: -40~1250℃; E type: -40~900℃; J type: -40~750℃; T type: -40~350℃

II. Product Features

Integrated & Flexible Structure: Formed into a small-diameter non-removable flexible entity through repeated drawing and shrinkage. The MIMS structure is easy to bend and use, and cannot be disassembled.

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.

Diverse Type Advantages: Different type codes (K, N, E, J, T) have their own characteristics. For example, K type has good linearity and stability, N type is more stable at high temperatures, E type has high thermoelectric output, J and T types are applicable to reducing atmospheres.

Versatile Application: Can replace assembly thermocouples in most occasions, and can also be used as the core thermocouple wire for assembly type to enhance durability; MIMS cable is suitable for mass production.

Wide Material Compatibility: MIMS sheath is available in stainless steel, heat-resistant steel, high-temperature alloy and other materials, which can adapt to different industrial environment requirements.

III. Related Component Specifications

MIMS Cable:

Diameters: φ1mm, φ2mm, φ3mm, φ4mm, φ5mm, φ6mm, φ8mm, φ10mm for thermocouple applications.

Materials: Stainless steel, heat-resistant steel, high-temperature alloy, corrosion-resistant alloy, etc., with good high-temperature resistance and corrosion resistance.

Processing: Formed by repeated drawing and shrinkage, integrated structure without disassembly.

Thermocouple Core:

Type matching: Corresponding to K (NiCr10-NiSi3), N (NiCrSi-NiSiMg), E (NiCr-Constantan), J (Fe-Constantan), T (Copper-Constantan) thermoelements, ensuring stable thermoelectric signal output.

Accessories:

Wiring components: Simple type, plug type, waterproof type, explosion-proof type wiring terminals, etc.

Mounting parts: Threaded, flange mounting brackets and other accessories to meet different installation needs.

MI thermocouple probes Conductor Combinations And Characteristics

Type	Thermoelement	Temperature range ℃	Function Features
Type	Thermoelement	Temperature range ℃	Advantages	Disadvantages
K	NiCr10-NiSi3	-40~1200	With good thermoelectric EMF linearity, good stability and good oxidation resistance. It's the most widely used thermocouple.	Not suitable for reducing atmosphere.
N	NiCrSi-NiSiMg	-40~1250	With all the advantages as K type thermocouple, more stability in high temperature environment.	Not suitable for reducing atmosphere.
E	NiCr-Constantan	-40~900	Highest thermoelectric output among all thermocouples, the sensitivity is high.	Not suitable for reducing atmosphere, low thermal conductivity.
J	Fe- Constantan	-40~750	Can be used in reducing atmosphere, thermoelectric is higher than K type thermocouple.	Iron rusts easily, thermoelectric drift easily.
T	Copper- Constantan	-40~350	Can be used in reducing atmosphere, with good thermoelectric EMF linear and stability.	Using temperature is not high, the positive copper is easy to oxidize.

IV. Application Scenarios

MI thermocouples are widely used in various industrial temperature measurement scenarios due to their flexible structure and diverse performance, mainly including:

Automotive Industry: Engine temperature monitoring, battery thermal management systems (served BYD Auto and other enterprises).

Aerospace & Aviation: Test chambers, aircraft engine component temperature measurement (served AVIC Industry, AECC, China Aerospace).

Petrochemical Industry: Pipeline and reactor temperature monitoring in high-temperature, corrosive environments.

Power Generation Industry: Boiler, turbine and transformer temperature measurement in power plants.

Metallurgical & Building Materials Industry: Temperature detection in smelting furnaces, cement kilns and other high-temperature equipment.

Research & Education Institutions: Laboratory temperature measurement in Tsinghua University, National University of Defense Technology and other institutions.

V. Product Advantages

Flexible and Easy to Install: The MIMS structure is easy to bend, and supports multiple installation methods such as threaded and flange installation, which is suitable for complex installation spaces.

Stable Performance: Conforms to international standards, with good thermoelectric EMF linearity and stability (e.g., K type has excellent oxidation resistance, N type is more stable at high temperatures).

Strong Adaptability: Various sheath materials and type codes can be selected to adapt to reducing atmosphere, high-temperature oxidation environment, corrosive environment and other different working conditions.

High Cost-Effectiveness: MIMS cable is suitable for mass production, which reduces the production cost; it can replace assembly thermocouples in most cases, saving the cost of customized assembly.

Reliable Quality Assurance: The manufacturer has SIL 2 functional safety certification, ISO 14001 environmental management system certification, and explosion-proof certification, with strict product testing and stable quality.

VI. Frequently Asked Questions (FAQs)

Q:What factors affect the thermal response time of MI thermocouples?

A: The thermal response time is mainly affected by the sheath diameter of the MIMS cable. The smaller the sheath diameter, the shorter the thermal response time. In addition, the material of the sheath and the measured medium will also have a slight impact on the response speed.

Q：How to select the appropriate type code of MI thermocouple?

A: For general high-temperature oxidation environment (-40~1200℃), K type is preferred for its wide application and good stability; for higher temperature stability requirements (-40~1250℃), N type is selected; for scenarios requiring high thermoelectric output (-40~900℃), E type is suitable; J type (-40~750℃) and T type (-40~350℃) are applicable to reducing atmosphere, and T type has better linearity for low-temperature measurement.

Q:Can MI thermocouples be disassembled for maintenance?

A: No. MI thermocouples are formed into a non-removable flexible entity through repeated drawing and shrinkage. If damaged, the whole product needs to be replaced instead of disassembling and repairing internal components.

Q:What should be paid attention to when selecting MIMS sheath materials?

A: For ordinary industrial environments, stainless steel sheath can be selected; for high-temperature working conditions above 800℃, heat-resistant steel or high-temperature alloy sheath is needed; for corrosive environments such as chemical plants, corrosion-resistant alloy sheath should be used to ensure the service life of the product.

Q:Is the MI thermocouple compatible with the existing industrial temperature measurement system?

A: Yes. MI thermocouples support simple type, plug type, waterproof type and other wiring methods, which can be seamlessly integrated with common industrial temperature controllers, PLC and DCS systems, without major modifications to the existing system.