About FJINNO Fuzhou Innovation Electronic Sci&Tech Co., Ltd. (branded as FJINNO) is a high-tech enterprise founded in 2011, headquartered in Fuzhou, Fujian Province, China. With a team of 100+ professionals and a 3,000+㎡ manufacturing base, FJINNO has dedicated over 20 years to the R&D and production of intelligent monitoring systems, emerging as a trusted provider of integrated sensing solutions for global industrial clients . Core Technology & R&D Strength FJINNO’s competitive edge lies in its independently developed fluorescent fiber optic temperature sensing technology, a breakthrough achieved through industry-academia-research collaboration with institutions like Fuzhou University . This core technology features: Complete electrical insulation: Utilizing all-dielectric materials to ensure safety in high-voltage environments. EMI immunity: Resistant to electromagnetic interference, ideal for complex industrial scenarios. Maintenance-free performance: No recalibration required, reducing operational costs . The R&D team focuses on integrating multi-physical parameter monitoring (temperature, vibration, pressure) into intelligent systems, holding independent intellectual property rights for key technologies . Product Portfolio FJINNO offers a comprehensive range of monitoring products tailored to diverse industrial needs: Fluorescent Fiber Optic Temperature Measurement Systems: For real-time hot-spot monitoring of transformer windings and high-voltage equipment. Oil-Immersed Transformer Online Monitoring Systems: Detect winding temperature anomalies to prevent equipment failure. PHM (Prognostics and Health Management) Systems: Enable predictive maintenance for critical infrastructure. Temperature Controllers: Including rail transit fiber optic temperature controllers and dry-type transformer temperature controllers . All products comply with international quality standards and have passed ISO 9001:2015 certification . Application Fields FJINNO’s solutions serve 8+ core industries, providing end-to-end monitoring services: Power Industry: Transformer, switchgear, and cable joint temperature monitoring for State Grid and China Southern Power Grid projects. New Energy & Nuclear Power: Battery storage cabinet temperature control and nuclear facility environmental monitoring. Infrastructure: Comprehensive pipe galleries, oil & gas pipelines, and rail transit systems. Chemical & Municipal: Corrosion-resistant temperature/pressure monitoring for harsh environments . Industry Impact & Vision As a participant in major industry events (e.g., the 102nd China Electronics Exhibition ), FJINNO is committed to advancing basic electronic component technology. Its cost-effective solutions and customizable OEM/ODM services have gained recognition in both domestic and global markets . Looking ahead, FJINNO aims to leverage IoT and AI integration to become a global leader in intelligent temperature measurement and predictive maintenance solutions, supporting high-quality development of the manufacturing industry . For more information: www.fjinno.net
[embed]https://youtu.be/N9c4Z17WOOM[/embed] By utilizing the single value correspondence between the afterglow lifetime and temperature of rare earth fluorescent materials, the temperature signal is converted into an optical lifetime signal for measurement. After being irradiated with light of a specific wavelength, fluorescent substances emit fluorescence when electrons transition from a low energy level to an excited state at a high energy level, and then return to a low energy level. After the excitation stops, the fluorescence decays exponentially, and its decay time constant is temperature dependent. By measuring the decay time, i.e. the fluorescence lifetime, the temperature at the measurement point can be obtained. system composition Fluorescent fiber optic (including sensing head): converts the temperature information of the monitoring part of the temperature probe into an optical signal and transmits it to the fiber optic temperature transmitter. The probe size is small and can be directly installed on the measured point, with accurate temperature measurement and rapid response. Tail fiber is soft and sturdy, with advantages such as high transmission bandwidth, stable signal, anti electromagnetic interference, anti bending, high impact strength, and fast connection. The tail fiber sheath material is usually polytetrafluoroethylene, which can adapt to harsh environments such as high pressure, high temperature, and strong electromagnetic fields. Power equipment switchgear, ring main unit monitoring system, fluorescent fiber temperature measurement device, fluorescent fiber Fiber optic temperature transmitter: Connected to fluorescent fiber optic through an ST connector, it receives real-time optical signals carrying temperature information from fiber optic sensors and demodulates them into temperature values to achieve temperature measurement of the monitored area. Each fiber optic transmitter can be connected to multiple fluorescent fibers. Communication software and header: Fluorescent fiber optic communication software is used to achieve communication with the upper computer, and can perform functions such as data transmission, storage, and analysis. The head of the fiber optic temperature measurement system collects temperature information transmitted by the transmitter through RS485, and displays the temperature of each probe in real time. It is generally embedded and has a user-friendly human-machine interface interaction. advantage Strong anti-interference ability: pure optical sensing, suitable for substations MRI、 The microwave cavity and other strong electromagnetic fields have natural immunity, no zero drift, no false alarms, and can work stably in high voltage and strong electromagnetic environments. Good high-voltage insulation performance: Quartz fiber optic can withstand voltage>100kV and can be directly tied to the surface of 500kV transformer windings, GIS contacts or busbars to achieve "live zero distance" hot spot monitoring without reducing the insulation level of the equipment. Calibration free, long-term stability: Temperature is only related to fluorescence lifetime and is not related to light intensity, connector attenuation, or fiber bending. It does not require recalibration after 10-25 years of installation, reducing maintenance costs and workload. Miniature size, easy to embed: The probe has a small diameter and can be inserted into narrow areas such as switch cabinet plum blossom contact fingers, cable joint gaps, dry-type transformer air ducts, etc. It does not disturb the thermal field of ...
Fiber optic temperature measurement systems offer high accuracy and immunity to electromagnetic interference. Integrating RS485 interface allows for reliable industrial data transmission. Custom development ensures compatibility with various automation and monitoring platforms. Proper protocol design and interface customization are key for seamless integration. Tailored solutions maximize system flexibility and future scalability. Fiber optic temperature measurement systems are increasingly used in industrial environments that demand precision and real-time monitoring. These systems excel in harsh conditions, offering accurate readings with immunity to electromagnetic interference, making them ideal for power plants, steel mills, and substations. However, integrating these systems into existing industrial networks often requires a robust communication interface such as RS485. [embed]https://youtu.be/G3EoPUtLVnc[/embed] The RS485 interface is widely adopted in industry due to its long-distance transmission capability and resilience to electrical noise. For fiber optic temperature measurement solutions, uploading data over RS485 allows seamless communication with programmable logic controllers (PLCs), distributed control systems (DCS), and supervisory control and data acquisition (SCADA) systems. This integration ensures that temperature data can be accessed and analyzed alongside other key process variables. Custom development of the RS485 upload interface involves designing hardware and software modules that translate fiber optic sensor data into standard communication protocols, such as Modbus RTU. This customization may include protocol conversion, data formatting, and the implementation of device addressing schemes. Properly developed interfaces guarantee compatibility with a wide range of automation equipment and simplify on-site deployment. In addition to hardware adaptation, flexible software configuration is essential for system integration. User-defined parameter settings, alarm thresholds, and data reporting intervals can be supported through a customized interface. This ensures the fiber optic temperature measurement system can be tailored to specific application requirements and evolving operational needs. By investing in customized RS485 interface development for fiber optic temperature measurement systems, businesses benefit from improved process reliability, streamlined data integration, and future scalability. Such solutions not only enhance system compatibility but also provide a foundation for expanding monitoring functions as industrial needs grow. Frequently Asked Questions 1. Why use fiber optic temperature measurement in industrial applications? Fiber optic sensors are immune to electromagnetic interference and offer high accuracy in extreme environments. 2. What advantages does RS485 offer for data transmission? RS485 supports long-distance, stable, and noise-resistant communication, making it ideal for industrial settings. 3. How does custom interface development benefit integration? Custom interfaces ensure compatibility with existing control systems, enable user-specific functions, and support future upgrades. 4. Can the RS485 interface support multiple devices? Yes, RS485 allows for multidrop communication, enabling multiple devices to share the same bus line. 5. What protocols are commonly used with RS485 in temperature measurement? Modbus RTU is a common protocol, but custom or proprietary protocols can also be implemented based on requirements.
[embed]https://youtu.be/kLBOxbpd5ko[/embed] In the medical field, fluorescent fiber optic temperature measurement has become the ideal choice for precisely monitoring human core body temperature and critical temperatures of medical equipment due to its characteristics of precision, safety, and anti-interference. It plays a particularly important role in scenarios with extremely high temperature monitoring requirements, such as surgery and intensive care. Precise Monitoring of Human Core Body Temperature, Supporting Critical Care and Surgical Management Human core body temperature (such as intracranial and intra-abdominal temperatures) is an important indicator reflecting vital signs. Minor changes may indicate disease deterioration or surgical risks. Traditional temperature measurement methods (such as axillary and oral temperature measurement) are easily affected by environmental factors with limited accuracy, while fluorescent fiber optic temperature measurement can overcome these limitations. Invasive Precise Temperature Measurement Fluorescent fiber optic probes can have diameters as small as 0.1mm, enabling minimally invasive implantation into deep human tissues (such as brain tissue, intravascular, and abdominal cavity) for direct core temperature measurement. The error can be controlled within ±0.1℃, far superior to traditional surface temperature measurement accuracy (errors often exceed ±0.5℃). For example, in neurosurgery, strict monitoring of brain tissue temperature is required to avoid ischemic injury. Fluorescent fiber optics can provide real-time precise data feedback, guiding doctors to adjust surgical plans. Electromagnetic Interference Resistance Advantages ICU and operating rooms contain numerous electronic devices (such as ventilators, electrocautery units, and MRI machines). Traditional electronic temperature measurement devices are susceptible to electromagnetic interference, causing data distortion. Fluorescent fiber optics transmit through optical signals, completely unaffected by electromagnetic environments. They can work stably in strong magnetic field environments such as Magnetic Resonance Imaging (MRI), ensuring the reliability of temperature measurement data. Ensuring Safe Operation of Medical Equipment, Preventing Potential Risks The stable operation of medical equipment directly relates to patient safety. Abnormal temperatures in critical components of some equipment may cause failures or even safety accidents. Fluorescent fiber optic temperature measurement can provide reliable monitoring in such scenarios. Extracorporeal Circulation Equipment Monitoring In cardiac surgery, the heat exchanger of extracorporeal circulation machines requires precise control of blood temperature. Fluorescent fiber optics can be embedded inside heat exchangers to monitor the temperature at the interface between water and blood contact in real-time, ensuring smooth blood heating or cooling processes and avoiding red blood cell destruction due to sudden temperature changes. High-Frequency Electrocautery and Laser Equipment Temperature Measurement High-frequency electrocautery units and laser treatment devices generate localized high temperatures during operation. Excessive temperatures may burn patient tissues or damage the equipment itself. Fluorescent fiber optic probes can be installed near treatment heads to monitor output temperature in real-time. Once safety thresholds are exceeded, they can trigger equipment protection mechanisms to stop operation promptly, reducing medical risks. Temperature Monitoring in Special Environments, Expanding Application Scenarios In some special medical scenarios, higher safety and adaptability requirements are placed on temperature measurement equipment. The characteristics of fluorescent fiber optic temperature measurement enable it to excel in these applications. Hypothermia Therapy Monitoring In the treatment of brain injury ...
[embed]https://youtu.be/NiQoFOoTOA0[/embed] The safe and stable operation of dry-type transformers highly depends on precise temperature monitoring. Fluorescent fiber optic temperature measurement technology has become the ideal choice in this field due to its characteristics of anti-interference, high safety, and high precision. It can effectively address challenges such as strong electromagnetic environments and complex structures during transformer operation, providing critical protection for reliable equipment operation. Why is Fluorescent Fiber Optic Temperature Measurement Suitable for Dry-Type Transformers? Dry-type transformers, due to the absence of insulating oil, are widely used in high-rise buildings, subways, hospitals, and other locations with extremely high safety requirements. The winding temperature directly relates to insulation life and operational safety. Traditional temperature measurement methods (such as thermocouples and infrared sensors) have obvious shortcomings in terms of electromagnetic interference resistance, installation flexibility, and measurement accuracy, while fluorescent fiber optic temperature measurement perfectly addresses these deficiencies. The core principle of fluorescent fiber optic temperature measurement is: utilizing the temperature effect of fluorescent materials (temperature changes alter fluorescence lifetime or intensity), transmitting fluorescent signals through optical fibers, and then converting them to temperature data through demodulation modules. The optical fiber itself is non-conductive and corrosion-resistant, fundamentally avoiding the inherent defects of traditional electrical temperature measurement. Core Advantages Analysis of Fluorescent Fiber Optic Temperature Measurement 1. Superior Electromagnetic Interference Resistance, Adapting to Complex Electrical Environments Dry-type transformers generate strong electromagnetic fields and high-frequency interference during operation. Traditional electrical signal temperature measurement components (such as thermocouples and thermal resistors) are susceptible to interference, causing data drift or even measurement failure. Fluorescent fiber optics transmit data through optical signals, and the fiber itself is an insulator, unaffected by electromagnetic induction, ground loops, etc. It can maintain measurement stability in 10kV-35kV high-voltage environments. Compared to infrared temperature measurement (easily affected by dust and water vapor causing signal attenuation), optical fibers can be directly embedded inside windings, unaffected by external environmental interference, providing higher data reliability. 2. High Safety, Eliminating Potential Electrical Risks The windings and core of dry-type transformers are at high voltage potential. If temperature measurement components contain conductive parts, they may cause insulation breakdown or short-circuit risks. The sensor probes and transmission optical fibers of the fluorescent fiber optic temperature measurement system are all made of non-metallic materials with no conductive paths, eliminating electrical safety hazards from the source. Even in extreme cases where winding overheating causes insulation aging, optical fiber materials will not burn or release harmful substances, meeting the fire safety requirements of high-security locations. 3. High Precision + Wide Range, Covering Critical Temperature Measurement Points The winding hot spot temperature of dry-type transformers is a key indicator for judging insulation aging (such as the maximum allowable temperature of 155℃ for Class F insulation), requiring temperature measurement error ≤±1℃. Fluorescent fiber optic temperature measurement can achieve accuracy of ±0.5℃ with a range covering -50℃~200℃, fully meeting the full operating condition temperature monitoring needs of dry-type transformers from startup to overload. Traditional infrared temperature measurement, due to non-contact measurement requirements, cannot accurately capture ...
FJINNO Electronic Technology stands as the premier fiber optic temperature measurement device manufacturer, delivering cutting-edge monitoring solutions for transformers and switchgear applications worldwide. Our advanced factory combines innovative engineering with precision manufacturing to produce high-accuracy fluorescent fiber optic sensors that set industry standards for reliability and performance. [embed]https://youtu.be/hFNTBUmKIhs[/embed] About FJINNO: Industry-Leading Manufacturer As a leading fiber optic temperature measurement device manufacturer, FJINNO's state-of-the-art factory produces high-precision monitoring solutions for industrial applications worldwide. We serve as a trusted wholesale and bulk supplier, offering competitive pricing for large-scale projects through our extensive distributor and dealer networks. Our experienced wholesaler partnerships ensure global market coverage while providing local technical support and service capabilities. As a premier exporter, we deliver cutting-edge fiber optic temperature sensors to over 50 countries, maintaining strict quality standards throughout our international supply chain. We specialize in private label services, enabling partners to market our advanced technology under their own brand identity. Our comprehensive OEM/ODM capabilities provide tailored solution development for specific customer requirements, from initial concept through full-scale production. FJINNO Factory: Advanced Manufacturing Excellence FJINNO's modern manufacturing facility incorporates the latest automation technology and quality control systems to ensure consistent production of superior fiber optic temperature measurement devices. Our factory maintains ISO 9001 certification and implements rigorous testing protocols throughout the manufacturing process. Production Capabilities Annual production capacity exceeding 100,000 sensor units Cleanroom environments for optical component assembly Automated calibration and testing systems Environmental stress testing facilities Complete quality traceability from raw materials to finished products Quality Assurance Systems 100% functional testing of every manufactured unit Temperature cycling and environmental validation Electromagnetic compatibility verification Long-term stability testing programs Statistical process control monitoring Wholesale and Bulk Supply Solutions FJINNO serves as a comprehensive wholesale supplier for fiber optic temperature measurement systems, offering volume pricing and dedicated support for large-scale transformer and switchgear monitoring projects. Our bulk supply capabilities accommodate utility companies, industrial facilities, and system integrators requiring multiple monitoring systems. Wholesale Benefits Competitive volume pricing structures Flexible delivery scheduling to match project timelines Technical support throughout implementation Custom packaging and labeling options Extended warranty programs for bulk orders Bulk Order Capabilities Minimum order quantities starting from 10 units Dedicated account management for large projects Custom configuration options for specific applications Priority production scheduling for urgent requirements Comprehensive documentation and certification packages Global Distribution Network FJINNO maintains an extensive network of authorized distributors and dealers worldwide, ensuring local availability and support for our fiber optic temperature measurement solutions. Our distribution partners provide regional expertise while maintaining global quality standards. Distributor Services Regional inventory management and rapid delivery Local technical support and training programs Application engineering assistance Installation and commissioning services Ongoing maintenance and calibration support Dealer Network Benefits Comprehensive product training and certification Marketing support and sales tools Technical documentation in local languages Competitive pricing and margin structures Regular product updates and technology briefings International Export Excellence As a leading exporter of fiber optic temperature measurement technology, FJINNO delivers advanced monitoring solutions to customers in over 50 countries. Our export operations ...
Functions and advantages Real time online monitoring: capable of 24-hour uninterrupted real-time temperature monitoring of heating pipelines, capturing small changes in pipeline temperature in a timely manner, and achieving dynamic tracking of pipeline operation status. Distributed measurement: It can achieve continuous distributed temperature measurement along the entire heating pipeline distributed along the optical fiber, comprehensively and accurately reflecting the temperature distribution along the pipeline, avoiding the monitoring blind spot problem of traditional point based temperature measurement methods, and is of great significance for early detection of local overheating, leakage and other abnormal situations in the pipeline. Accurate positioning: Once a temperature anomaly is detected, the system can quickly and accurately determine the location of the anomaly, making it easier for maintenance personnel to quickly locate the fault location for repair, shorten repair time, reduce repair costs, and minimize the impact on the surrounding environment. Long measurement distance: It can achieve long-distance temperature monitoring, generally up to several kilometers or even tens of kilometers, which can meet the monitoring needs of large-scale heating pipelines and reduce the number and cost of monitoring equipment deployment. Strong anti electromagnetic interference capability: Optical fibers themselves have good electrical insulation and anti electromagnetic interference performance, are not affected by external electromagnetic fields, and can work stably and reliably in complex industrial environments, ensuring the accuracy and reliability of temperature measurement data. High precision temperature measurement: It has a high temperature measurement accuracy, generally up to ± 1 ℃, which can meet the temperature monitoring accuracy requirements of heating pipelines and effectively monitor the temperature changes of pipelines. High safety: There is no need to install invasive temperature sensors on the pipeline, which will not have any impact on the structure and operation of the pipeline, nor will it change the stress state and insulation performance of the pipeline, ensuring high safety. Long service life: the optical fiber has good corrosion resistance and aging resistance, and its service life is long, usually more than 20 years, reducing the cost of system maintenance and replacement. High degree of intelligence: It can be combined with computer control systems, data communication systems, etc. to achieve remote monitoring, data storage, data analysis, fault alarm and other functions, improving the management level and operational efficiency of heating pipelines. [embed]https://youtu.be/VQBC9bAYhVU[/embed]
[embed]https://youtu.be/itauRaqItZ4[/embed] Fiber optic temperature measurement of oil immersed transformer windings is an advanced temperature monitoring technology. The following is a related introduction: Principle of Temperature Measurement Fluorescent fiber temperature measurement: using the sensitivity of fluorescent substances in the fiber to temperature changes to measure temperature. When the fiber optic thermometer sends an inquiry light pulse to the sensor, the fluorescent substance absorbs the light energy and emits fluorescence. The intensity and lifetime of fluorescence are related to temperature, and the thermometer calculates the temperature value by detecting these characteristics. Distributed fiber optic temperature measurement: Based on the principles of optical time domain reflection technology and Raman scattering effect, laser transmission in the fiber will generate backward Raman scattering light, whose intensity changes with the temperature of the fiber. By measuring the intensity of backward Raman scattering and using optical time domain positioning technology, distributed measurement of temperature along the fiber optic line can be achieved. Composition of temperature measurement system Fiber optic sensors: are key components for temperature measurement, such as fluorescent fiber optic sensors or distributed fiber optic sensors, used to sense changes in winding temperature. Temperature measurement host: responsible for sending inquiry light signals or lasers to fiber optic sensors, and receiving light signals returned from sensors, analyzing and processing them to calculate temperature values. Fiber optic transmission: Connect the fiber optic sensor to the temperature measurement host for transmitting optical signals. Backend monitoring system: Receive temperature data sent by the temperature measurement host, and perform functions such as display, storage, analysis, and alarm to facilitate operation and maintenance personnel to grasp the temperature status of transformer windings in real time. Installation method Pre embedded installation: During the manufacturing process of transformers, fiber optic sensors are pre embedded in designated positions inside the winding to ensure close contact between the sensor and the winding, and to more accurately measure the temperature distribution inside the winding. However, this method cannot be used for transformers that have already been put into operation. Post installation: For in-service transformers, the internal body of the transformer can be lifted out using a hanging cover, and fiber optic temperature sensors can be installed on the winding surface or other locations where temperature measurement is required. After installation, the transformer can be reassembled. In addition, there is also a magnetic installation method, but its temperature measurement accuracy is relatively low and may be affected by external magnetic fields. advantage Strong anti-interference ability: Optical fibers themselves have electromagnetic insulation, are not affected by electromagnetic interference, and are not afraid of the impact of harsh environments such as high voltage, high temperature, lightning strikes, etc. They can work stably in strong electromagnetic fields, ensuring the accuracy and reliability of temperature measurement data. High temperature measurement accuracy: The temperature measurement accuracy of fluorescent fiber optic sensors can usually reach ± 1 ℃ or higher, and the accuracy of distributed fiber optic temperature measurement systems can also reach around ± 1 ℃, which can accurately reflect the actual temperature ...
Optical fiber distributed temperature sensing (DTS) is widely regarded as the most advanced and reliable technology for real-time oil pipeline temperature monitoring. DTS systems provide continuous, long-range, and multi-point temperature profiles along the entire pipeline length, surpassing traditional point sensors in safety and resolution. Fiber optic-based pipeline monitoring supports key technologies such as DTS (Distributed Temperature Sensing), DVS (Distributed Vibration Sensing), and DAS (Distributed Acoustic Sensing), enabling early detection of leaks, intrusion, or abnormal heating. Modern pipeline temperature monitoring systems using optical fiber sensors can operate over distances exceeding 50 km per channel, with spatial resolution as fine as 1 meter, making them ideal for large-scale oil & gas infrastructure. DTS pipeline monitoring solutions are designed for seamless integration with SCADA and pipeline integrity management systems, supporting industries such as oil & gas, petrochemical, and energy transportation. Reputable global suppliers and technology manufacturers recommend fiber optic DTS systems for pipeline safety, regulatory compliance, and asset protection, especially in critical and remote environments. Table of Contents What is DTS Pipeline Temperature Monitoring? Advantages of Fiber Optic DTS, DVS, and DAS in Pipeline Monitoring Top 10 Oil Pipeline Temperature Monitoring System Suppliers (2025 Ranking) Application Scenarios and Industry Compliance Conclusion and Recommendation What is DTS Pipeline Temperature Monitoring? Distributed Temperature Sensing (DTS) is a state-of-the-art fiber optic technology applied widely for real-time temperature monitoring in oil and gas pipelines. Unlike traditional point sensors, DTS provides continuous temperature data along the entire length of the pipeline, often covering distances of 50 km or more per channel. The fiber optic cable, installed alongside or within the pipeline, detects even small variations in temperature with high spatial resolution, typically down to 1 meter. This allows for immediate detection of leaks, hotspots, or abnormal thermal events that could threaten pipeline safety and integrity. DTS pipeline monitoring systems are essential for early leak detection, thermal profiling, and regulatory compliance in the oil and gas industry. Integrated with SCADA and pipeline integrity management platforms, these systems are now the industry standard for long-distance, harsh environment, and high-stakes energy infrastructure. Advantages of Fiber Optic DTS, DVS, and DAS in Pipeline Monitoring Continuous Monitoring: Provides a complete and uninterrupted temperature map along the entire pipeline, vastly improving detection of leaks or insulation failures compared to traditional sensors. Long-Range Capability: One DTS system can monitor up to 50 km or more per channel, reducing installation and maintenance costs for long pipelines. Multi-Parameter Sensing: Fiber optic systems can simultaneously support DTS (temperature), DVS (vibration), and DAS (acoustic) sensing, enabling integrated solutions for leak, intrusion, and third-party interference detection. High Sensitivity and Resolution: Detects small leaks and temperature changes with spatial resolution as fine as 1 meter and temperature accuracy of ±1°C or better. Robustness: Immune to electromagnetic interference, resistant to harsh environmental conditions, and suitable for hazardous areas. Compliance and Safety: Supports regulatory requirements for leak detection and environmental monitoring in the oil and gas sector. Easy Integration: Compatible with SCADA, DCS, and remote monitoring platforms for real-time data visualization, alarming, and ...
advantages of transformer fiber optic sensors: High insulation performance: Optical fibers have good electrical insulation properties, can withstand high voltages, avoid faults caused by insufficient insulation, and ensure the safe operation of transformers. Strong anti electromagnetic interference capability: Optical fibers are not easily affected by electromagnetic interference and can work stably in strong electromagnetic field environments, ensuring accurate and reliable temperature measurement. Wide temperature measurement range: It can cover the temperature range from -30 ℃ to 240 ℃, meeting the temperature measurement needs of different transformer working environments. Quick response: With the ability to quickly detect temperature, it can capture instantaneous changes in transformer temperature in a timely manner, providing real-time monitoring data for transformer operation. Corrosion and wear resistance characteristics: Fiber optic materials are corrosion-resistant and wear-resistant, and can work stably for a long time in complex environments such as acidic, alkaline, and humid conditions, extending the service life of sensors. Easy to install and maintain: The sensor has a small size, light weight, simple installation process, and low maintenance cost, reducing the overall cost of ownership of the transformer monitoring system. Miniaturization and multi-point measurement: The sensor size is small, making it easy to install at different positions inside the transformer, achieving multi-point measurement and obtaining more comprehensive temperature distribution information. Remote monitoring and automation: It can be connected to remote monitoring systems to achieve automatic data collection, analysis, and transmission, facilitating timely detection of anomalies and taking measures to improve the safety of transformer operation. Reliability and safety: With stable and reliable performance, it can effectively improve the operational safety of transformers, reduce the risk of accidents caused by temperature monitoring issues, and minimize economic losses. Strong environmental adaptability: able to maintain stable performance in harsh environments, adapt to various complex working conditions, and provide reliable monitoring support for transformers. High precision temperature measurement: It can accurately measure the temperature changes inside the transformer, with high temperature measurement accuracy, and can effectively reflect the actual temperature situation inside the transformer. Passive measurement: The sensor itself does not require power supply, is inherently safe, and has higher safety when used in flammable and explosive environments, with no risk of electric sparks. Strong anti-aging capability: the optical fiber material has good anti-aging performance, which can maintain stable performance under long-term use, and ensure the accuracy and reliability of monitoring data. High signal transmission quality: Fiber optic signal transmission has low attenuation and good confidentiality, ensuring lossless transmission of monitoring data over long distances and providing high-quality data support for remote monitoring. Strong compatibility: It can be integrated with multiple monitoring systems to achieve data sharing and collaborative work, improving the overall monitoring level and intelligence of transformers. Below are the top 10 manufacturers of transformer monitoring sensors: 1、FJINNO Established in 2011, FJINNO is a high-tech enterprise with strong R&D capabilities. Collaborating with universities like Fuzhou University, it has developed fluorescent fiber optic temperature sensors with independent intellectual property rights. Its main products include fluorescent fiber optic temperature measurement ...
[embed]https://youtu.be/gIOAJnoqdjs[/embed] Fiber optic temperature measurement for switchgear contacts is an important technology for monitoring electrical equipment temperatures. There are primarily two types of fiber optic temperature sensors: Fluorescence Fiber Optic Temperature Measurement This method utilizes the temperature characteristics of fluorescent materials. Fluorescence fiber optic probes are installed at heat-prone areas such as switchgear contacts. Light from an excitation source is absorbed by the fluorescent material, which then emits fluorescence carrying temperature information. The fiber optic transmission unit transmits the excitation light to the probe and returns the fluorescence signal to the signal processing unit. After processing through photodetectors, amplifiers, filters, analog-to-digital converters, and other circuits, temperature characteristic information is extracted, enabling precise temperature calculation. Fiber Bragg Grating Temperature Measurement This method is based on the Bragg gratings principle in optical fibers. When temperature changes, the period and effective refractive index of the fiber Bragg grating change, causing a shift in the Bragg wavelength. By measuring this wavelength shift, the temperature value can be determined. This approach enables distributed temperature measurement of switchgear contacts with high accuracy and stability. System Components Temperature Transmitter/Demodulator Main Unit This is the core control unit of the entire fiber optic temperature measurement system, responsible for controlling signal emission, reception, and processing. It typically includes light source drive circuits, photodetectors, signal processing circuits, data processors, and communication interfaces. These systems offer temperature resolution of 0.1°C, measurement accuracy of ±1°C, and rapid scanning across all channels. Fluorescence Optical Fiber (with Sensing Head) The fluorescence optical fiber serves as the temperature-sensitive element. Its probe is encapsulated with fluorescent material used to sense the temperature of the measured object and convert temperature information into optical signals transmitted to the temperature measurement main unit. The fiber offers excellent insulation properties and electromagnetic interference resistance, ensuring stable signal transmission in the complex electromagnetic environment of switchgear. Optical Fiber Transmission Unit This unit connects the temperature measurement main unit and the fluorescence fiber optic sensing head, transmitting optical signals between them. It must possess good optical performance and mechanical stability to ensure the quality and reliability of optical signal transmission. Monitoring and Display Unit This unit displays processed temperature data in real-time, allowing maintenance personnel to intuitively understand the temperature conditions at various measurement points within the switchgear. It also includes alarm functionality, issuing audio-visual alarm signals when temperatures exceed preset thresholds, alerting maintenance personnel to take action. Additionally, some monitoring systems support data storage, historical data queries, and analysis functions. Advantages Electromagnetic Interference Resistance Strong electromagnetic fields exist around switchgear. Fiber optic temperature measurement systems are not affected by electromagnetic interference, ensuring accurate and reliable temperature data. High Insulation and Safety Fluorescence optical fibers possess excellent insulation properties with no risk of current leakage. When used in high-voltage switchgear environments, they ensure measurement safety without interfering with equipment operation. Real-time Monitoring These systems can monitor temperature changes at critical locations within switchgear in real-time, promptly detecting abnormal temperature rises, preventing overheating-induced failures, and improving switchgear operational reliability. Long-term Stability Once installed, ...
INNO fibre optic temperature sensors ,temperature monitoring systems.
