K-Type Explosion-Proof Thermocouple for Industrial Hazardous Areas
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K-Type Explosion-Proof Thermocouple for Industrial Hazardous Areas

K-Type Explosion-Proof Thermocouple for Industrial Hazardous Areas

K-type thermocouple (NiCr-NiSi) with wide temperature range (-200℃~+1200℃) and high accuracy (±0.5%FS), ideal for harsh industrial environments. Explosion-proof certification (IECEx) for Zone 1/2 & Class I Div. 2 hazardous areas, ensuring safe operation in flammable gas/dust environments. Solid drill protection tube (Stainless Steel 316L/Inconel 600) with high pressure resistance (up to 25MPa) and corrosion resistance, suitable for high-impact working conditions.
Products Description

 

K-type thermocouple (NiCr-NiSi) with wide temperature range (-200℃~+1200℃) and high accuracy (±0.5%FS), ideal for harsh industrial environments

Explosion-proof certification (IECEx) for Zone 1/2 & Class I Div. 2 hazardous areas, ensuring safe operation in flammable gas/dust environments

Solid drill protection tube (Stainless Steel 316L/Inconel 600) with high pressure resistance (up to 25MPa) and corrosion resistance, suitable for high-impact working conditions.

Flange mounting design (ANSI/JIS/DIN standard) for secure installation, preventing leakage in high-pressure pipelines/equipment

CE/RoHS/ISO certified, compatible with PLC/DCS systems, supporting 4-20mA output or direct temperature signal transmission.

 

 

Detailed Description

 

Designed for temperature measurement in high-risk industrial environments, this K-type explosion-proof thermocouple integrates reliable sensing technology, robust solid drill protection, and secure flange mounting to deliver accurate, safe, and durable performance.

 

Crafted with K-type thermocouple elements (NiCr-NiSi), the sensor offers a broad temperature measurement range from -200℃ to +1200℃, with ±0.5%FS measurement accuracy, ensuring precise data collection for critical process control. The explosion-proof enclosure is certified by IECEx, meeting strict safety standards for Zone 1/2 (gas) and Zone 21/22 (dust) hazardous areas, making it suitable for applications in oil & gas, chemical, and pharmaceutical industries where flammable substances are present.

 

The solid drill protection tube is manufactured from high-quality stainless steel 316L or Inconel 600, featuring exceptional mechanical strength, pressure resistance (up to 25MPa), and corrosion resistance to acids, alkalis, and industrial solvents. Unlike hollow tubes, the solid drill design provides superior impact resistance, preventing damage from debris or mechanical collision in harsh working conditions.

 

Equipped with standard flange mounting (ANSI B16.5, DIN EN 1092-1 optional), the thermocouple ensures tight sealing and stable installation on pipelines, reactors, and pressure vessels, eliminating leakage risks in high-pressure systems. It is available with optional extensions such as a terminal box (explosion-proof/weatherproof), 4-20mA transmitter module, or compensating cables, enabling seamless integration with PLC, DCS, or other industrial control systems.

 

Compliant with CE, RoHS, and ISO standards, each thermocouple undergoes rigorous quality testing (including high-temperature calibration, explosion-proof performance verification, and pressure testing) before delivery. We also offer customization services for tube length (100mm~3000mm), flange size, and connection type to meet your specific application requirements.

 

Application Scenarios

 

Oil & Gas: Downhole drilling, refineries, pipeline transportation, and offshore platforms.

Chemical Industry: Reaction kettles, solvent storage tanks, and corrosive medium pipelines.

Power Generation: Boiler systems, turbine exhaust channels, and high-pressure steam pipelines.

Pharmaceutical Industry: Explosion-proof production workshops and high-pressure sterilization equipment.

Mining Industry: Underground mining equipment and flammable gas monitoring systems.

 

Thermocouple limits of error

 

Thermoelement

Type

Limits Of Error(±℃)/Effective Temperature Range(℃)

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

 

Product details

 

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Why Choose Us?

 

1. Industrial-Grade Durability: Solid drill protection tube and explosion-proof enclosure ensure long service life.

2. Global Safety Compliance: Full set of international certifications, supporting customs clearance and on-site safety inspections worldwide.

3. Customization Flexibility: Tailor-made tube length, flange size, and output type to match your equipment specifications.

4. Reliable Support: 24/7 technical consultation, 18-month warranty, and free calibration service for lifetime use.

 

Packaging & Shipping

 

Shipping Methods: International Express (DHL/FedEx/UPS) for samples, Air/Sea Freight for bulk orders (door-to-door service available).

Packaging Customization: Branded packaging with logo printing and anti-collision foam for bulk purchases.

 

FAQ

 

Q: Can the protection tube be replaced if damaged?

A: Yes, the solid drill tube is replaceable; we provide matching replacement tubes and professional installation guidance.

Q: Is the thermocouple compatible with 2-wire/3-wire/4-wire systems?

A: The standard model supports direct temperature signal transmission; the optional 4-20mA transmitter module is compatible with 2-wire systems.

Q: What is the lead time for customized orders?

A: Standard models ship within 7 days; customized orders take 10-15 days, with expedited production available for urgent needs.

Our Customers

 

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Insights into our company

 

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Insights into our production

 

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Manual Welding

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Automatic Welding

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Insulation Testing

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Laser Marking

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Warehouse Managing

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Thermocouple Assemble

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Vacuum Leak Detection

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Surface Polishing

 

Quality Certifications

 

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