Basic Function Introduction
Tailored specifically for dry-type transformers, our PT100 platinum resistance temperature sensor is a professional device built to monitor the real-time temperature of the transformer's three phases during operation. Here's a breakdown of its key functions:
It precisely gathers temperature data from each of the transformer's three phases, giving you a reliable, up-to-the-minute temperature reference to ensure the transformer operates safely.
Each sensor set comes with three separate temperature-sensing elements, one for each phase of the transformer. This lets you measure the temperature of all three phases independently and at the same time.
To make on-site installation, wiring, and identification easier, each of the three temperature-sensing elements in a set is paired with a cable of a different color. This avoids confusion and speeds up construction work.
It performs steadily across a temperature range of 50~200°C, which covers the entire normal operating temperature range of dry-type transformers and works well in various harsh working conditions.
The high-temperature-resistant cable ensures that temperature signals are transmitted steadily, with no interference or attenuation-so you can always count on accurate temperature data.
Structure Introduction
Our sensor features a modular design, broken down into four key components that work together seamlessly: the core temperature-sensing element, high-temperature-resistant cable, color identification markers, and tin-plated tail treatment. This design is not only reasonable but also easy to install and highly durable.
Core Temperature Measuring Element
As the heart of the sensor, the core temperature-sensing component uses imported PT100 thin-film platinum resistance. It's compact, highly accurate, and stable, and it's installed at the transformer's key temperature measurement points to make direct contact with the area being measured and collect real-time temperature data.
High-Temperature-Resistant Cable
Connected to the core temperature-sensing element, this cable is responsible for sending temperature signals to the monitoring system. Made from high-temperature-resistant materials, it can withstand the high temperatures inside dry-type transformers for long periods without aging, cracking, or losing signal. Best of all, we can customize the cable length to match your specific installation needs, making it highly flexible.
Color Identification Mark
Each sensor set includes three cables of different colors, each corresponding to one of the transformer's three phases. The color coding is clear and standardized, making it easy for on-site construction teams to wire and debug the sensor-greatly reducing the chance of installation errors.
Tail Tin-Plated Treatment
We apply tin plating to the end of the cable to boost conductivity, prevent oxidation and corrosion of the cable terminal, and improve the stability and lifespan of the connection. This ensures a reliable link between the sensor and your monitoring equipment.
Material Introduction
Quality and reliability are our top priorities, which is why we carefully select high-quality materials for every part of the sensor. This ensures the sensor's overall performance and long service life.
Core Temperature Measuring Element Material
The core temperature-sensing element uses imported PT100 thin-film platinum resistance. Platinum is an excellent choice here because it has stable temperature coefficient performance, high measurement accuracy, strong anti-interference capabilities, and good corrosion resistance. It maintains stable performance even during long-term high-temperature operation, with minimal measurement error-perfect for meeting the high-precision temperature measurement needs of dry-type transformers.
Cable Material
Our cables are made from high-temperature-resistant materials that can handle temperatures up to 200°C for extended periods. They also offer good insulation, wear resistance, and corrosion resistance, so they won't easily age, deform, or break in harsh working conditions. This ensures stable signal transmission and a long cable lifespan.
Other Auxiliary Materials
The sensor's shell and fixing parts are made from high-temperature-resistant, corrosion-resistant engineering plastics. These materials have good mechanical strength and environmental adaptability, protecting the core components from external damage and ensuring the sensor operates stably in complex industrial environments.
Working Principle
Our dry-type transformer-specific PT100 platinum resistance temperature sensor operates based on a simple but reliable principle: the resistance of platinum changes as temperature changes. Platinum has a stable positive temperature coefficient, meaning its resistance increases in a linear fashion as temperature rises within a specific range.
The core PT100 thin-film platinum resistance is in direct contact with the part of the transformer being measured. When the transformer's temperature changes, the platinum resistance's resistance value changes too. The high-temperature-resistant cable sends this changed resistance signal to the temperature monitoring system, which converts the resistance signal into a corresponding temperature value through calculation and processing. This lets you see the real-time temperature of each transformer phase, enabling real-time monitoring and early warning of transformer temperature.
Since each sensor set comes with three PT100 temperature-sensing elements (one for each transformer phase), you can measure each phase's temperature independently. The color-coded cables ensure that temperature data for each phase is transmitted and identified accurately, eliminating confusion.
Core Advantages
High Measurement Accuracy
By using imported PT100 thin-film platinum resistance as the core temperature-sensing element, our sensor delivers high measurement accuracy with minimal error, accurately reflecting the transformer's actual temperature. It fully meets the high-precision temperature monitoring needs of industrial dry-type transformers, providing reliable data to keep your transformers running safely.
Excellent Consistency
Every set of three temperature-sensing elements undergoes strict consistency testing during production. The three elements have highly consistent resistance values and temperature coefficients, ensuring that the temperature data from the transformer's three phases is comparable and accurate. This avoids deviations caused by inconsistent element performance.
Clear Color Distinction
Each of the three temperature-sensing elements in a set is paired with a cable of a different color, making them easy to tell apart. This simplifies on-site installation, wiring, and debugging, reduces the risk of installation errors, speeds up construction, and makes later maintenance easier.
High Temperature Resistance and Long Service Life
Our cables are made from high-temperature-resistant materials, and the core element uses high-quality platinum-so the entire sensor can operate stably between 50~200°C. It's highly resistant to high temperatures, corrosion, and wear, and it won't easily age or get damaged. Its long service life reduces the frequency of sensor replacement and lowers your maintenance costs.
Flexible Customization
We can customize the cable length to fit your specific installation needs, making the sensor suitable for different dry-type transformer models and installation environments. This solves the problem of standard cable lengths not matching on-site requirements, improving the sensor's applicability.
Reliable Performance
Every sensor goes through strict quality inspections at every stage-from raw material selection and production to final delivery. It has a reasonable structure and stable performance, operating reliably in harsh industrial environments like high temperatures, humidity, and electromagnetic interference. This ensures that temperature monitoring is both reliable and continuous.
Comprehensive Comparison with Traditional Products
|
Comparison Item |
Our Product |
Traditional Temperature Sensor |
|
Core Element |
Imported PT100 thin-film platinum resistance, offering high precision and stable performance |
Common domestic platinum resistance or thermistor, with lower precision and less stability |
|
Consistency |
Rigorous consistency testing ensures the three elements in each set perform uniformly, with comparable data |
No strict consistency control, leading to large differences between elements and incomparable data |
|
Color Distinction |
Three cables of different colors, clearly distinguishable for easy installation and identification |
No color distinction or unclear coding, often leading to wiring confusion |
|
Temperature Resistance |
High-temperature-resistant cable enables stable operation at 50~200°C and a long service life |
Standard cables with poor high-temperature resistance, prone to aging and damage in high-heat environments |
|
Customization |
Cable length can be customized to your needs, ensuring strong applicability |
Fixed cable length with no customization options, resulting in poor applicability |
|
Tail Treatment |
Tin-plated tail for better conductivity, oxidation resistance, and corrosion resistance |
No tin plating or only simple treatment, leading to easy oxidation and poor contact |
|
Measurement Accuracy |
High accuracy with minimal error, ensuring precise temperature measurement |
Low accuracy with large error, failing to reflect the actual temperature accurately |
|
Service Life |
Long service life, typically 5-8 years |
Short service life, usually 2-3 years, requiring frequent replacement |
|
Installation Efficiency |
Color-coded design simplifies wiring and installation, boosting efficiency |
No color distinction, making wiring prone to errors and lowering installation efficiency |
Core Technology Highlights
We use imported PT100 thin-film platinum resistance as the core temperature-sensing element. Thin-film technology gives the element a compact size, high precision, and excellent stability. Compared to traditional thick-film platinum resistance, it offers better temperature coefficient consistency and lower measurement error-letting you achieve more accurate temperature measurement.
To meet the three-phase temperature measurement needs of dry-type transformers, we've designed a three-in-one integrated structure. Each sensor set includes three temperature-sensing elements, each paired with a cable of a different color. This design not only allows independent three-phase temperature measurement but also solves the wiring confusion issue common with traditional sensors, greatly improving installation and maintenance efficiency.
Our sensor's cable uses a special high-temperature-resistant material formula, developed and optimized in-house. It can withstand temperatures up to 200°C for long periods, with good insulation and mechanical strength. This solves the problem of traditional cables aging and breaking easily in high temperatures, ensuring stable temperature signal transmission.
During production, we implement strict consistency control. Each batch of PT100 elements is tested for resistance value and temperature coefficient, and only those that meet our standards are selected for assembly. Additionally, the three elements in each set undergo a second consistency test to ensure they perform uniformly-guaranteeing the accuracy and comparability of three-phase temperature data.
The cable's tail is professionally tin-plated using high-purity tin and advanced tin-plating technology. This treatment not only enhances the conductivity of the cable terminal but also effectively prevents oxidation and corrosion, improving connection stability. It also avoids signal loss and contact failure caused by terminal damage.
Frequently Asked Questions (FAQ)
Q: What is the measurement accuracy of the sensor?
A: With imported PT100 thin-film platinum resistance as its core element, the sensor delivers a measurement accuracy of ±0.1°C within the 50~200°C range-more than meeting the high-precision temperature monitoring needs of dry-type transformers.
Q: Can the cable length be customized? What is the maximum customizable length?
A: Absolutely-we can customize the cable length to match your specific installation needs. The maximum standard customizable length is 10 meters, but we can also provide longer cables for special requirements.
Q: What are the colors of the three cables in one group? Can the colors be customized?
A: Our standard cable colors for each set are red, blue, and yellow-clear and easy to distinguish. If you have specific color preferences, we're happy to provide color customization to meet your unique needs.
Q: What is the service life of the sensor?
A: Under normal operating conditions (50~200°C, no severe corrosion or mechanical damage), the sensor has a service life of 5-8 years-significantly longer than traditional temperature sensors.
Q: Is the sensor compatible with all types of dry-type transformers?
A: Our sensors feature universal specifications, making them compatible with most dry-type transformer models on the market. For specific transformer models or temperature measurement needs, we can also provide customized sensor solutions to ensure perfect compatibility.
Q: How to install the sensor? Is it easy to operate?
A: The sensor is designed for easy installation. You can directly install the core temperature-sensing element at the transformer's key temperature measurement points, then connect the color-coded cables to the monitoring system according to the color marks. No professional installation team is needed-it's simple and quick to operate.
Q: What should I do if the sensor fails during use?
A: We offer comprehensive after-sales service. If the sensor fails within the 1-year warranty period, we'll provide free repair or replacement. We also have a professional technical support team that can offer remote guidance to help you resolve installation and usage issues promptly.
Q: Does the sensor have anti-interference ability?
A: Yes, it does. The core element uses imported PT100 thin-film technology, which offers excellent anti-electromagnetic interference performance. Additionally, the high-temperature-resistant cable is equipped with a shielding layer that effectively blocks external electromagnetic interference, ensuring stable and accurate temperature signal transmission.
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