PT100 Platinum Resistance Thermometer (RTD)

I. Core Product Details

This PT100 platinum resistance thermometer (RTD) is tailor-made for reactor and transformer temperature monitoring. Its core structure and parameters are fully adapted to the high-temperature, strong electromagnetic interference, and special installation space conditions of power equipment.

Core Sensing Element: PT100 platinum RTD — platinum offers inherently high measurement accuracy, strong stability, and a wide temperature range (−200 °C to 650 °C), perfectly matching the operating temperature range of reactors and transformers (40 °C–150 °C in normal operation, up to 200 °C+ in extreme conditions), ensuring reliable temperature data from the source.

Encapsulation Technology (Key Highlight): The PT100 sensing element is encapsulated with red epoxy resin inside a ceramic tube. The ceramic tube offers high-temperature resistance, strong insulation, and excellent chemical stability, effectively isolating the element from high voltage, oil, and dust inside reactors/transformers. The red epoxy resin provides strong adhesion and excellent sealing — firmly securing the sensing element to prevent measurement deviation from loosening or displacement, while enhancing heat and moisture resistance to extend service life.

Cable Configuration: Equipped with PTFE (Teflon) high-temperature shielded cables — PTFE withstands up to 260 °C, fully tolerating the high-temperature environment of reactor/transformer operation, while offering resistance to acids, alkalis, oil, and aging. The shielding layer effectively counters strong electromagnetic interference generated during equipment operation, preventing signal distortion and ensuring accurate temperature data transmission.

Key Performance: High accuracy (IEC 60751 compliant — Class A: ±0.15 °C, Class B: ±0.3 °C); fast response (thermal response time ≤5 s) to quickly capture temperature changes in windings and cores, enabling timely fault early-warning.

Application Scenarios: Temperature monitoring for power transformers, dry-type transformers, series reactors, shunt reactors, and various other power equipment. Can be installed directly at key measurement points (windings, cores, oil tanks). Compatible with various temperature control instruments and PLC systems.

II. Core Product Advantages

Our product advantages lie not in leading a single parameter, but in "precise workload adaptation + solving real pain points + reducing overall customer costs" — each advantage corresponds to a core B2B customer need.

1. Strong Workload Adaptability, Extremely Low Failure Rate: Ceramic tube encapsulation + PTFE cable combination enables long-term stable operation in high-temperature, strong-interference environments. Avoids frequent damage and measurement failure caused by ordinary RTD encapsulations with poor heat resistance, cable aging, and signal interference — reducing replacement labor costs, material costs, and downtime risk from temperature monitoring failures.

2. Accurate and Reliable Temperature Measurement — Supporting Safe O&M: High precision of PT100 combined with the stability of ceramic encapsulation ensures minimal data error. Fast thermal response enables real-time capture of temperature anomalies — e.g., winding overheating or excessive core loss — enabling early fault warning and preventing severe accidents like equipment burnout or fires. This safeguards safe and stable operation of power equipment and reduces safety risks and O&M costs.

3. Easy Installation, Strong Compatibility: The compact ceramic tube encapsulation fits into the narrow installation spaces inside reactors and transformers without major equipment modifications. PTFE cables are flexible for easy routing; the shielded design connects directly to existing temperature control instruments, PLCs, and monitoring systems without additional anti-interference equipment, reducing installation and system upgrade costs.

4. Long Service Life, High Overall Cost-Effectiveness: Double protection from red epoxy resin + ceramic tube extends the service life of the sensing element to 5–8 years (vs. 3–5 years for ordinary RTDs). PTFE cables resist aging and wear, reducing cable replacement frequency. Long-term use significantly lowers consumable and maintenance costs — far superior overall cost-effectiveness to standard general-purpose platinum RTDs.

5. Standardized Production, Controllable Quality: Strictly produced per IEC 60751 international standards. Every unit undergoes factory accuracy calibration, high-temperature testing, anti-interference testing. Complete quality inspection reports and certificates of conformity are available — meeting B2B customers' tender and quality acceptance requirements, and reducing the risk of purchasing substandard products.

III. Key Differentiators vs. Competing Products

Most PT100 RTDs on the market are general-purpose, suited for ordinary temperature monitoring. Our product is purpose-built for reactors and transformers — the core differences lie in workload adaptation and pain point resolution:

IV. Product Key Points Summary

Core Positioning: Reactor/transformer-dedicated PT100 RTD — centered on workload adaptation + precision stability — delivering device temperature monitoring solutions

Core Structure: PT100 sensing element + red epoxy resin + ceramic tube encapsulation + PTFE high-temperature shielded cable

Core Advantages: High accuracy, fast response, high-temp resistance, EMI immunity, long service life, easy installation, strong compatibility

Core Value: Resolves B2B customer pain points of insufficient accuracy, element damage, signal interference, and high O&M costs — ensuring equipment safe operation and reducing total costs

Core Differentiator: Purpose-built for power equipment; workload adaptability far exceeds general-purpose products; install and use directly without additional adaptation

V. FAQ

Q: What accuracy can your product achieve? Does it meet our reactor/transformer measurement requirements?

A: Our products strictly comply with IEC 60751, offering Class A (±0.15 °C) and Class B (±0.3 °C) accuracy options — far exceeding industry standards. The error tolerance for reactors/transformers in normal operation is within ±1 °C, so our product precisely captures subtle temperature changes in windings and cores, providing reliable data for fault early-warning. Every unit is factory-calibrated with a calibration report provided.

Q: What is the maximum operating temperature? Can it run long-term in a reactor/transformer's high-temperature environment?

A: The overall temperature limit of the product is 260 °C; the ceramic-encapsulated sensing element tolerates up to 650 °C — fully compatible with reactor/transformer conditions (40 °C–150 °C normal, up to 200 °C+ extreme). PTFE cables rated at 260 °C can be used long-term without aging, cracking, or short-circuits. Red epoxy resin sealing prevents de-bonding or element loosening at high temperatures, ensuring stable long-term operation with a service life of 5–8 years.

Q: Our equipment generates strong electromagnetic interference during operation. Can your product prevent signal distortion?

A: Absolutely. Our product is equipped with PTFE high-temperature shielded cables. The shielding layer effectively isolates the strong EMI generated by power equipment in operation, preventing signal interference and distortion, and ensuring accurate temperature data transmission to control instruments and PLC systems. Terminal insulation design further enhances anti-interference performance — no additional anti-interference equipment is needed, reducing system upgrade costs.

Q: Is installation complicated? Can it adapt to our existing installation space and system?

A: Installation is very straightforward and fully compatible with your existing space and system. The compact ceramic tube encapsulation (customizable dimensions) can be installed directly at key measurement points — windings, cores, oil tanks — without major equipment modifications. Flexible PTFE cables simplify routing (length customizable). The standard PT100 output signal connects directly to your existing temperature control instruments, PLCs, and monitoring systems with no interface modifications required.

Q: What after-sales support do you provide? How do you ensure our O&M efficiency?

A: We provide comprehensive B2B after-sales support: ① 1-year warranty — free replacement/repair for non-man-made defects during the warranty period; ② 7×24-hour technical consultation — professional engineers respond promptly to installation, commissioning, and troubleshooting questions; ③ Customized batch ordering services (dimensions, cable length, accuracy class); ④ Post-warranty lifetime repair service at reasonable rates, with adequate spare parts inventory to prevent downtime from product failures.

Q: Your product is priced higher than standard general-purpose RTDs. Why is it worth purchasing?

A: Although our product is priced slightly higher, its overall cost-effectiveness far exceeds standard products, significantly reducing total long-term costs: ① Longer service life (5–8 years vs. 3–5 years for ordinary products) reduces material and labor replacement costs; ② Extremely low failure rate avoids equipment failures and downtime losses from temperature monitoring failures (one hour of power equipment downtime far exceeds the price difference); ③ No need for additional anti-interference or high-temperature equipment, reducing system upgrade costs; ④ High accuracy and fast response enable early fault warning, preventing severe accidents like equipment burnout and reducing safety risks and financial losses. For B2B customers, "stable, reliable, low-cost O&M" delivers far greater value than "lowest unit price."

Q: Can you provide relevant quality inspection reports and certificates of conformity? Do they meet tender requirements?

A: Yes. Our products are manufactured strictly in accordance with international and industry standards. Every unit undergoes factory inspection (accuracy calibration, high-temperature testing, anti-interference testing, sealing testing). We can provide complete quality inspection reports, certificates of conformity, and calibration reports — fully meeting B2B customer tender and quality acceptance requirements, reducing the risk of purchasing substandard products, and enhancing customers' competitiveness in bidding.

VI. Summary

We understand that for B2B customers, temperature monitoring of reactors and transformers is not just about "a platinum RTD" — it is about "a precise, stable, and reliable temperature monitoring solution" that forms the core support for "reducing O&M costs, mitigating equipment risks, and ensuring safe equipment operation."

This product is purpose-built for reactors and transformers. With the PT100 high-precision sensing element as the core, combined with ceramic tube + red epoxy resin encapsulation and PTFE high-temperature shielded cables, it comprehensively adapts to the demanding conditions of power equipment in both structure and performance — resolving the pain points of insufficient accuracy, slow response, easy damage, and poor EMI resistance of ordinary RTDs.

We not only provide high-quality products but also offer customized selection guidance, professional technical support, and comprehensive after-sales assurance — fully safeguarding customers' equipment temperature monitoring needs, helping customers reduce total O&M costs, improve equipment operational safety, and achieve mutual success.