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The WRN-130 wear-resistant thermocouple is specially designed for severe wear and high-temperature working conditions such as cement plants and fluidized bed boilers. It adopts a high-hardness wear-resistant alloy protection tube, has a fast thermal response speed, and a measurement accuracy of ±0.75%│t│. It can stably measure the temperature of gas and dust media in the range of 800-1200℃, effectively extending the service life and reducing maintenance costs.
Product details
WRN-130 Abrasion-Resistant Thermocouple
Wear-Resistant Alloy Tube · High Temp & Pressure · Anti-Erosion
🔥 0~1100℃ · K-Type · IP65 · Designed for High-Wear Applications
🔍 Overview
The WRN-130 abrasion-resistant thermocouple is specifically designed for harsh industrial environments with high wear, high velocity, and high temperature. It features a specially formulated wear-resistant alloy protection tube with high surface hardness, excellent erosion resistance, and thermal shock resistance. Paired with a K-type (NiCr-NiSi) thermocouple, it provides long-term stable measurement from 0 to 1100℃ in applications such as kilns, pipelines, and fluidized beds.
⚡ Core Advantages
🛡️
Wear-Resistant Alloy Tube
Made of high-temperature wear-resistant alloy (e.g. Cr25Ni20Si2) with surface hardness HRC 45-50. Resists particle erosion, lifespan 5-8 times longer than standard 304 stainless steel.
Extreme Wear Resistance
🌡️
K-Type Thermocouple Element
High-quality NiCr-NiSi wires, accuracy meets IEC 60584 Class I. Excellent long-term stability, covering 0~1100℃ full range.
0~1100℃
⚙️
Fast Response
Optimized tube wall thickness for thermal response time τ0.5 ≤ 90 seconds (fast-response versions available on request).
Fast Response
❓ Why is an abrasion-resistant thermocouple essential for high-wear applications?
In circulating fluidized bed boilers, cement rotary kilns, pulverized coal pipelines, and similar environments, gas flows carry high concentrations of solid particles that cause intense erosion of the protection tube. Standard 304 or 316 stainless steel tubes can be worn through in weeks or even days, leading to thermocouple failure and unplanned downtime.
WRN-130 employs a wear-resistant alloy that forms a hardened surface layer, dramatically improving wear resistance and ensuring reliable long-term operation while reducing replacement frequency.
📋 Technical Specifications
| Model | WRN-130 (non-fixed) / WRN2-130 (dual element) |
|---|---|
| Calibration | K (NiCr-NiSi) |
| Temperature Range | 0℃ ~ 1100℃ (short-term up to 1200℃) |
| Accuracy Class | Class I (±1.5℃ or ±0.004|t|) / Class II |
| Protection Tube Material | Wear-resistant alloy (Cr25Ni20Si2 / 3YC52 / custom) |
| Tube Diameter | φ16 / φ20 / φ25 (optional) |
| Insertion Length | 200mm / 300mm / 400mm / 500mm or custom |
| Connection Head | Waterproof (IP65) / Explosion-proof (dⅡCT6) |
| Thermal Response Time | τ0.5 ≤ 90 seconds (at temperature step change) |
| Insulation Resistance | ≥ 100MΩ at room temperature (500V DC) |
| Mounting Style | Non-fixed / Threaded / Flanged (depending on model suffix) |
🏭 Typical Applications
Circulating Fluidized Bed (CFB) Boiler
Cement Rotary Kiln Preheater
Pulverized Coal Burner Pipeline
Waste Incinerator
Fluidized Bed / Roaster
Blast Furnace Hot Stove
FCC Unit
Submerged Arc Furnace Off-Gas
📌 Case Study: CFB Boiler Bed Temperature Monitoring
Customer: A thermal power plant in Shanxi, China (2×240t/h CFB boiler)
Conditions: Dense bed temperature 900~950℃, high bed material velocity, severe particle erosion. Standard K-type thermocouples lasted only 2 months on average, causing frequent shutdowns.
Solution: Replaced with WRN-130 abrasion-resistant thermocouples, φ20 protection tube, wear-resistant alloy, 300mm insertion length.
Result: Continuous operation for 14 months without damage, stable temperature measurement, and elimination of unplanned outages. Annual maintenance cost savings of approximately ¥120,000.
✅ "Since switching to WRN-130, we haven't worried about bed temperature points." – Boiler Specialist
🔧 Model Selection Guide
WRN-130
Non-fixed, suitable for furnace wall openings with mounting brackets.
WRN-230
Threaded connection (M27×2), for pipes or equipment with threads.
WRN-430
Flanged connection (DN25/40/50), for pressure vessels or high-pressure pipelines.
👉 Often used with SBW-K temperature transmitter to output 4-20mA signals to DCS.
📥 Technical Documents
WRN-130 datasheet · Wear-resistant material report · Dimensional drawings
🔗 Related Products: SBW-K Thermocouple Transmitter | WZP Abrasion-Resistant RTD | High-Temperature Compensating Cable
Anhui Chuchen Technology Co., Ltd. · 18-month warranty · lifetime support
📞 +86 15212084600 | ✉️ 394821307@qq.com
Address: No.8, Talent Science and Technology Innovation City, Jingjiu Road, Tianchang City, Anhui, China
