Product Introduction
The Compensating Wire Type Armored Thermocouple is a robust and highly reliable temperature sensor designed for industrial applications that demand both precision and durability. It combines the benefits of armored construction for harsh environments with compensating wires for long-distance signal transmission without compromising measurement accuracy.
Structure & Working Principle
This thermocouple consists of the following key components:
- Sensing Element: Typically made of standard thermocouple materials (such as K, J, T types) based on the application.
- Armored Sheath: A flexible stainless steel protective tube that shields the thermocouple from mechanical damage, corrosion, and vibration.
- Compensating Wire: Special extension wire made from materials compatible with the thermocouple type. It transmits thermoelectric voltage from the sensor to the instrumentation over long distances without introducing additional error.
The thermocouple operates by generating a millivolt signal corresponding to the temperature difference between the measuring junction and the reference junction. The compensating wire ensures that the signal maintains integrity across extended runs to control or display systems.
Key Features
- Durable & Flexible: Armored sheath protects against physical and chemical wear, while maintaining bendability for complex routing.
- Error-Free Transmission: The use of compensating wire eliminates temperature-induced EMF errors during long cable runs.
- Quick Thermal Response: Ideal for real-time temperature tracking in high-speed industrial processes.
- Customizable: Available in a range of diameters, thermocouple types, probe lengths, and termination styles to suit any installation.
- Wide Temperature Range: Depending on the type, suitable for measuring temperatures from -200°C to +1250°C.
- High Compatibility: Easily integrates with PLCs, DCS systems, digital indicators, and recorders.
Application Scenarios
This product is widely used in:
- Petrochemical plants
- Steel and metallurgy
- Power generation
- Food and pharmaceutical industries
- Heat treatment and furnaces
- Boilers and pressure vessels
- Reactor temperature monitoring
Specifications (Example)
| Parameter | Value / Option |
|---|---|
| Thermocouple Types | K, J, T, E, N |
| Probe Diameter | 3mm ~ 12mm |
| Probe Length | Customizable |
| Sheath Material | SS304, SS316, Inconel, etc. |
| Compensating Wire Type | Matched to thermocouple (KX, JX, TX) |
| Output Signal | Millivolt signal (mV) |
| Accuracy | Class I / Class II (IEC 60584) |
| Temperature Range | -200°C to +1250°C (based on type) |
| Installation Options | Threaded fittings, flange, bayonet |
Benefits Summary
- Increased measurement distance without accuracy loss
- Resistance to vibration and corrosive environments
- High adaptability across industries and systems
- Low maintenance and long operational life