היצרן של חיישן טמפרטורה סיב אופטי, מערכת ניטור טמפרטורה, מִקצוֹעִי OEM/ODM מִפְעָל, סִיטוֹנַאי, ספק.מותאם אישית.

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5 פתרונות ניטור טמפרטורת חשמל 2026 מדריך השוואה

טייק אווי מפתח: Power Equipment Temperature Monitoring Solutions

  • חיישני טמפרטורה של סיבים אופטיים פלואורסצנטייםThe only solution offering complete high-voltage isolation + חסינות אלקטרומגנטית + lifetime calibration-free operation, making it the preferred choice for transformers and switchgear (★★★★★ Recommended)
  • חישת טמפרטורה מבוזרת (DTS)Continuous monitoring of cable tunnels and long-distance pipelines, with single fiber covering several kilometers
  • PT100 RTD sensorsTraditional solution with high accuracy but requires high-voltage isolation modifications and annual calibration
  • סיבים בראג פומפיה (FBG)Multi-point quasi-distributed sensing with excellent interference resistance
  • גליום ארסניד (GaAs) חיישניםSemiconductor-based with superior low-temperature performance
  • Industry data shows equipment overheating accounts for over 60% of power system failures
  • קוטר בדיקה סיב אופטי: 2.3מ"מ, customizable to smaller sizes for tight spaces

תוֹכֶן הָעִניָנִים

1. Why is Temperature Monitoring Critical for Power Equipment?

Airport dry-type transformer temperature controller

1.1 Power Equipment Overheating Statistics: 60% of Failures Stem from Temperature Anomalies

Temperature-related failures represent the most significant reliability challenge in modern power systems. Industry studies reveal that 60-70% שֶׁל שַׁנַאי fire incidents originate from overheating conditions. באופן דומה, contact overheating in מיתוג accounts for 45% of unexpected trips, while abnormal temperature rises at cable joints result in substantial annual losses.

1.2 Three Critical Temperature Monitoring Locations

יָעִיל power temperature monitoring requires strategic sensor placement at key thermal stress points. Oil-immersed transformers typically operate at winding temperatures between 85-95°C, while dry-type units reach 130-150°C. עֲבוּר ניטור טמפרטורת מתג, busbar connections should remain below 80°C under normal conditions, with alarm thresholds at 90°C and critical warnings above 105°C. Cable joint temperature monitoring focuses on detecting temperature rises exceeding 20K above ambient conditions.

1.3 Three Major Technical Challenges in Power Temperature Sensing

Implementing reliable מערכות ניטור טמפרטורה in power environments presents unique engineering challenges. High-voltage isolation requirements vary from 10kV to 500kV depending on equipment class. The intense electromagnetic interference surrounding transformers can reach tens of kV/m, disrupting conventional electronic sensors. בְּנוֹסַף, power equipment operates for 20-30 שנים, demanding maintenance-free temperature sensing solutions with exceptional long-term stability.

1.4 Consequences of Temperature Monitoring Failures

The failure of חיישני טמפרטורה in critical power equipment can trigger cascading consequences. Equipment damage from undetected overheating events may be severe, power outages disrupt industrial operations significantly, and safety incidents can result in personnel injuries with substantial social impact.

2. Technical Comparison of 5 Temperature Monitoring Solutions

חיישן טמפרטורה בסיבים אופטיים

2.1 Performance Specifications Comparison Table

פָּרָמֶטֶר סיבים פלורסנטיים DTS PT100 FBG GaAs
דִיוּק ±1°C ±1-2 מעלות צלזיוס ±0.15 מעלות צלזיוס (כיתה א') ±0.5 מעלות צלזיוס ±0.5 מעלות צלזיוס
טווח טמפרטורה -40~260°C -40~600°C -200~850°C -40~300°C -200~250°C
בידוד חשמלי >100kV Complete לְהַשְׁלִים Requires External לְהַשְׁלִים לְהַשְׁלִים
חסינות EMI לְהַשְׁלִים לְהַשְׁלִים רָגִישׁ לְהַשְׁלִים לְהַשְׁלִים
כִּיוּל Lifetime-Free Annual Required Annual Required Biennial Annual Required
זמן תגובה <1 שְׁנִיָה 10-60 שניות 3-10 שניות <1 שְׁנִיָה <1 שְׁנִיָה
נקודות ניטור 1-64 channels/system Continuous distributed Single point 10-50 points/fiber Single point
הַתקָנָה פָּשׁוּט לְמַתֵן מוּרכָּב לְמַתֵן פָּשׁוּט
יישומים אופייניים Transformers/Switchgear Cable Tunnels General Industrial Structural Monitoring Low-Temp Equipment

2.2 Comprehensive Performance Rating

Fluorescent fiber optic temperature monitoring systems demonstrate the most balanced performance profile for high-voltage power applications (★★★★★). The technology excels in scenarios requiring absolute electrical isolation, חסינות אלקטרומגנטית, and long-term stability without calibration requirements.

2.3 Application Scenario Quick Reference

Different טכנולוגיות ניטור טמפרטורה suit specific power system applications. חיישני סיבים אופטיים פלואורסצנטיים excel in critical point measurements for transformers and switchgear. Distributed Temperature Sensing serves long-distance cable routes effectively. Selection should consider voltage level, electromagnetic environment, monitoring point quantity, and maintenance capabilities.

3. Whyis the Top Choice for Transformers

מערכת מדידת טמפרטורה בסיבים אופטיים

3.1 Technical Principle: Rare-Earth Fluorescent Materials Enable Intrinsic Safety

ה חיישן טמפרטורה של סיבים אופטיים ניאון operates through rare-earth doped fluorescent materials (such as GaAs with rare-earth ions). When excited by pulsed light, these materials emit fluorescence with decay characteristics exponentially related to temperature. The optical signal transmission contains no electrical current, establishing complete electrical isolation. The probe end contains no metallic or electronic components, allowing direct contact with high-voltage conductors without safety concerns.

3.2 בידוד חשמלי מלא: The Only Technology for Direct High-Voltage Contact

חישת טמפרטורה בסיבים אופטיים provides isolation voltage exceeding 100kV, far surpassing PT100 insulation requirements. This eliminates the need for expensive high-voltage isolation devices, reducing installation complexity significantly. The technology enables direct temperature measurement on 500kV transformer windings and other energized components.

3.3 Lifetime Calibration-Free: Zero Maintenance Over 20 שנים

The fluorescence decay time represents a stable physical property unaffected by light intensity variations, fiber bending, or connector aging. This intrinsic measurement principle eliminates drift, making periodic calibration unnecessary. Fluorescent fiber optic monitoring systems maintain factory accuracy throughout their operational lifetime, contrasting sharply with conventional sensors requiring annual recalibration.

3.4 Complete Electromagnetic Immunity: Stable Measurement in Strong Magnetic Fields

Optical signal transmission remains unaffected by electromagnetic fields, enabling reliable operation in the intense magnetic environments surrounding transformers and switchgear. Transformer leakage flux and switchgear arcing cannot disrupt fiber optic temperature measurements, whereas PT100 sensors may experience errors exceeding ±10°C under identical conditions.

3.5 Compact Fiber Probe Design: 2.3mm Diameter with Custom Miniaturization

תֶקֶן בדיקה סיבים אופטיים diameter measures 2.3mm, with custom miniaturization available for confined installation spaces. The quartz fiber construction provides excellent insulation properties while maintaining mechanical flexibility for routing through complex equipment geometries.

4. חיישני טמפרטורה בסיבים אופטיים in Power System Applications

4.1 Switchgear Online Temperature Monitoring (יישום ראשוני)

High-voltage switchgear temperature monitoring represents the most common application for fluorescent fiber systems. Typical monitoring points include incoming line contacts, חיבורי פס, outgoing line contacts, וסיומי כבלים. Standard configurations deploy 6-9 channels per 12kV panel and 9-12 channels per 40.5kV panel. ה כבלי סיבים אופטיים route from cabinet bases or observation windows, facilitating non-intrusive installation.

4.2 Dry-Type Transformer Winding Temperature Control

עֲבוּר dry-type transformer temperature monitoring, fluorescent fiber probes embed directly within winding structures. The 260°C temperature rating satisfies Class H and Class C insulation requirements. Fiber extraction requires no special sealing, simplifying installation compared to conventional approaches. Multi-point sensing captures hot-spot temperature gradients accurately.

4.3 Oil-Immersed Transformer Multi-Point Sensing

Oil-immersed transformer temperature sensors utilize fiber probes introduced through bushings into the oil tank. Simultaneous monitoring of high-voltage windings, פיתולים במתח נמוך, טמפרטורת שמן עליונה, and bottom oil temperature provides comprehensive thermal mapping. ה טכנולוגיית חישה סיבים אופטיים eliminates concerns about electrical breakdown in oil environments.

4.4 Generator Stator Temperature Monitoring

Generator stator applications employ embedded חיישני טמפרטורת סיבים within slot conductors and end windings. Fiber-optic rotary joints enable signal transmission from rotating components. Large generators typically utilize 18-36 channel configurations for comprehensive thermal surveillance.

4.5 GIS Bus Temperature Sensing

מיתוג מבודד גז (GIS) installations benefit from ניטור טמפרטורה של סיבים אופטיים on enclosed busbars and post insulators. The compact probe diameter facilitates installation through existing ports without compromising SF6 gas integrity.

4.6 Cable Joint and Connection Temperature Monitoring

Critical cable joints and terminations receive dedicated חיישן סיבים אופטיים placement for early overheating detection. This application complements distributed sensing systems by providing precise measurements at known thermal stress points.

5. אֵיך DTS Achieves Comprehensive Cable Monitoring

ניטור סיבים אופטיים מבוזרים

5.1 Raman Scattering Principle: Single Fiber Monitors Kilometers

חישת טמפרטורה מבוזרת (DTS) technology employs Raman scattering physics to achieve continuous temperature profiling along optical fibers. Spatial resolution ranges from 0.5-2 מטרים, with measurement cycles of 10-60 שניות. Single fiber installations extend up to 80 קילומטרים, providing accuracy of ±1-2°C across the entire sensing length.

5.2 תרחישי יישום אופטימליים

Cable tunnel temperature monitoring represents the primary DTS application. Systems monitor 10kV and 35kV power cable routes throughout their length, detecting localized hot spots before they escalate to failures. Long-distance transmission lines benefit from simultaneous temperature distribution and ice loading detection. Submarine cable installations utilize DTS for landing segments and shallow water sections, enabling precise fault localization.

5.3 Complementary Integration with Fluorescent Fiber Systems

DTS monitoring systems excel at continuous spatial coverage over extended distances, בְּעוֹד חיישני סיבים אופטיים ניאון provide superior accuracy and faster response at discrete critical points. Hybrid architectures combining both technologies deliver comprehensive power system thermal management. Critical equipment receives point sensors while cable routes employ distributed sensing for optimal performance and reliability.

6. PT100 Limitations in High-Voltage Environments

בקר טמפרטורה עבור שנאי חשמל

6.1 Three Critical Limitations of Traditional Sensors

גלאי טמפרטורת התנגדות PT100 face significant challenges in high-voltage power applications. The copper wire connections required for resistance measurement create isolation difficulties. Induced currents from electromagnetic fields cause substantial measurement errors in transformer and generator environments. Annual calibration requirements generate recurring operational expenses and necessitate equipment downtime.

6.2 Industry Transition Away from PT100 Technology

Major power utilities increasingly specify ניטור טמפרטורה של סיבים אופטיים for new substation projects. The technology transition reflects superior long-term reliability and total ownership advantages. New installations directly adopt מערכות סיבים ניאון, while legacy equipment retrofits may employ transitional approaches during upgrade cycles.

7. FBG vs Fluorescent Fiber Optic: הבדלים מרכזיים

7.1 FBG Technology Fundamentals

סיבים בראג פומפיה (FBG) חיישני טמפרטורה utilize wavelength-encoded measurements, מאפשר 10-50 sensing points per fiber through wavelength division multiplexing. The technology offers ±0.5°C accuracy and simultaneous strain measurement capability. Primary applications include dam monitoring, bridge structural health assessment, and tunnel deformation tracking.

7.2 Comparative Analysis for Power Applications

בְּעוֹד FBG sensors provide excellent interference resistance, several factors limit power system adoption. Grating inscription increases manufacturing complexity, interrogator equipment costs exceed fluorescent systems, biennial calibration requirements persist, and high-temperature exposure above 300°C causes grating annealing degradation.

7.3 Technology Selection Recommendations

FBG monitoring systems suit applications requiring simultaneous temperature and strain measurement, such as GIS post insulator monitoring. For pure temperature sensing in power equipment, טכנולוגיית סיבים אופטיים ניאון delivers superior value through lower lifecycle costs and simpler maintenance. Budget allocation should consider whether strain data justifies the additional investment.

8. GaAs Sensors for Specialized Power Applications

8.1 Gallium Arsenide Sensor Characteristics

גליום ארסניד (GaAs) חיישני טמפרטורה אופטיים employ semiconductor crystal absorption edge properties for temperature measurement. The technology provides ±0.5°C accuracy with exceptional low-temperature performance extending to -200°C. Compact probe dimensions (1-2קוטר מ"מ) facilitate installation in confined spaces, though maximum operating temperature limits to 250°C.

8.2 Niche Power Sector Applications

Specialized applications include superconducting cable liquid nitrogen temperature zones (-196מעלות צלזיוס), superconducting fault current limiter cryogenic environments, and high-altitude substations experiencing extreme ambient cold. The technology serves custom requirements where standard חיישני סיבים ניאון may be specified but GaAs offers marginal low-temperature accuracy improvements.

8.3 Comparison with Fluorescent Fiber Technology

GaAs optical sensors provide slightly enhanced low-temperature precision and more compact form factors. אוּלָם, the 250°C high-temperature limitation, premium pricing, and limited market availability restrict widespread adoption. Standard power applications favor fluorescent fiber optic monitoring, with GaAs reserved for specialized cryogenic scenarios.

9. Solution Selection Guide by Equipment Type

9.1 Oil-Immersed Transformer Winding Temperature Monitoring

Primary recommendation: Fluorescent fiber optic temperature monitoring system. Fiber probes enter oil tanks through bushings, עִם 3-6 measurement points per winding. Top oil and bottom oil temperatures receive simultaneous monitoring. Systems scale from smaller units to large power transformers with 12-18 תצורות ערוצים.

9.2 Dry-Type Transformer Temperature Control

Exclusive recommendation: מערכות סיבים אופטיים פלואורסצנטיים. Probes embed directly within winding structures, with 260°C ratings satisfying Class H and Class C insulation materials. Fiber extraction requires no special sealing. PT100 technology cannot achieve safe winding integration due to isolation and electromagnetic interference limitations.

9.3 High-Voltage Switchgear Online Temperature Monitoring

Preferred solution: Fluorescent fiber multi-channel monitoring systems. Each panel monitors incoming contacts, מפרקי פסים, outgoing contacts, וסיומי כבלים. Standard 12kV panels employ 6-9 ערוצים, while 40.5kV installations utilize 9-12 ערוצים. Wireless temperature sensing serves as alternative for retrofit projects, though reliability falls below fiber optic solutions.

9.4 Power Cable Joint and Tunnel Monitoring

Long-distance tunnels: חישת טמפרטורה מבוזרת (DTS) מערכות. Single fiber monitors 5-15 kilometers with 1-meter spatial resolution. Critical joints: Fluorescent fiber point sensors for precise measurement. Combined DTS and point sensing architectures provide comprehensive protection.

9.5 Generator Stator Winding Temperature Monitoring

Primary choice: מערכות סיבים אופטיים פלואורסצנטיים. Embedded slot installation with fiber-optic rotary coupling technology enables signal extraction. Large units deploy 18-36 channel configurations for comprehensive coverage. PT100 sensors may suit small generators below 10MW with lower voltage levels.

9.6 GIS Equipment Bus Temperature Monitoring

מוּמלָץ: Fluorescent fiber temperature sensors. Compact probe diameter facilitates installation through existing access ports. Post insulator applications may consider FBG sensors if simultaneous strain measurement provides value. Standard bus monitoring prioritizes fluorescent fiber technology for optimal reliability.

10. 5-Step Quick Selection Process

10.1 שָׁלָב 1: Confirm Voltage Classification

Voltage level fundamentally determines sensor technology selection. Systems rated 10kV and below may accommodate fluorescent, PT100, or wireless options. Installations at 35kV and above require fiber optic solutions due to isolation complexity. Equipment rated 110kV and above exclusively employs ניטור טמפרטורה של סיבים אופטיים ניאון.

10.2 שָׁלָב 2: Evaluate Electromagnetic Environment

Intense magnetic fields surrounding transformers and generators mandate fiber optic sensor technology. Moderate interference environments in switchgear favor מערכות סיבים ניאון. Even in benign electromagnetic conditions, ניטור טמפרטורה של סיבים אופטיים provides superior long-term value despite PT100 technical viability.

10.3 שָׁלָב 3: Define Monitoring Architecture

Critical point precision measurement with fewer than 20 locations: Fluorescent fiber multi-channel systems. Long-distance continuous monitoring for cable tunnels: DTS distributed sensing. Combined requirements: Hybrid fluorescent point sensors plus DTS continuous monitoring for comprehensive coverage.

10.4 שָׁלָב 4: Consider Maintenance Capabilities

Facilities without dedicated calibration personnel: Fluorescent fiber systems (ללא תחזוקה). Organizations with established calibration programs: PT100 remains technically viable though economically questionable. Remote unmanned installations: Fluorescent or wireless temperature monitoring.

10.5 שָׁלָב 5: Apply Decision Matrix

Quick assessment conclusions: 90% of power temperature monitoring applications optimize with טכנולוגיית סיבים אופטיים ניאון. Long-distance cable routes supplement with מערכות DTS. PT100 sensors face industry-wide replacement trends. Wireless monitoring suits temporary or retrofit scenarios exclusively.

11. תיאור מקרה: 500kV Substation Retrofit Project

11.1 רקע הפרויקט

A major utility operated a 500kV substation with PT100 systems experiencing high failure rates after 12 years of service. Annual calibration procedures required substantial resources, while electromagnetic interference generated frequent false alarms averaging six monthly occurrences.

11.2 Fluorescent Fiber Optic Upgrade Implementation

מערכת ניטור טמפרטורה למיתוג

The retrofit deployed FJINNO מערכות ניטור טמפרטורה של סיבים אופטיים פלואורסצנטיים across critical assets. Main transformers received 18 channels each (6 high-voltage winding points + 6 low-voltage winding points + 3 top oil locations + 3 core positions) for three units totaling 54 ערוצים. High-voltage switchgear installations monitored 12 panels with 9 channels per panel, adding 108 ערוצים. The complete 162-channel system included installation and commissioning.

11.3 Operational Results

Installation completed within two weeks compared to two-month PT100 timelines. The system achieved two years of zero-failure, zero-false-alarm operation. Maintenance requirements reduced to routine inspections without calibration needs. Economic benefits included substantial annual savings from eliminated calibration and maintenance expenses. Customer feedback highlighted complete resolution of electromagnetic interference issues and elimination of nuisance alarms.

12. שאלות נפוצות

שאלה 1: What is the expected service life of fluorescent fiber optic temperature sensors?

FJINNO מערכות סיבים אופטיים ניאון feature design life exceeding 25 שנים. Rare-earth fluorescent materials exhibit stable physical properties, quartz fibers resist aging, and probe construction contains no electronic components. Field installations operating 15+ years maintain factory accuracy specifications. Comparatively, PT100 sensors require replacement at 5-8 year intervals, while wireless systems necessitate battery changes every 5-8 שנים.

שאלה 2: How many monitoring points can a single fiber optic system accommodate?

FJINNO offers configurations from 1 אֶל 64 channels per system. Single mainframes support up to 64 ערוצים, with cascade expansion enabling 128-channel architectures. Switchgear panels typically deploy 6-12 ערוצים ליחידה, transformers utilize 12-24 ערוצים, and generators require 18-36 ערוצים. Flexible configuration matches actual requirements without unnecessary capacity.

שאלה 3: Is installation complex? Does it require equipment outages?

Installation procedures are straightforward. בדיקות סיבים אופטיים attach to measurement points with fiber routing to the mainframe, eliminating complex wiring. New equipment accommodates pre-installation during manufacturing. Operating equipment retrofits require brief outages of 2-4 שעות. Compared to PT100 isolation device design and shielded cable installation, implementation time reduces 60-70%.

שאלה 4: What certifications do fluorescent fiber optic systems hold?

FJINNO products maintain CE and RoHS certification, conforming to IEC 61000 electromagnetic compatibility standards. Power sector qualification includes testing for grid integration. Explosion-proof variants carry ATEX/IECEx certification for Zone 1/2 classifications. Products include three-year warranty with lifetime technical support.

שאלה 5: How does FJINNO differ from other fluorescent fiber brands?

FJINNO’s 14-year specialization in טכנולוגיית סיבים אופטיים ניאון delivers distinct advantages. Proprietary rare-earth fluorescent material formulations optimize temperature response characteristics. Large-capacity 64-channel systems exceed industry-standard 32-channel architectures. זמן תגובה מתחת 0.8 seconds outperforms typical 1-2 second industry averages. Experience serving 500+ power customers provides extensive application knowledge. Localized service ensures rapid response with comprehensive spare parts availability.

שאלה 6: Can fiber probes be customized to smaller dimensions?

כֵּן, while standard בדיקה סיבים אופטיים diameter measures 2.3mm, FJINNO provides custom miniaturization for confined installation spaces. Smaller diameter probes maintain performance specifications while accommodating tight geometric constraints in compact equipment designs.

שאלה 7: Are free sample testing programs available?

FJINNO offers complimentary sample evaluation programs for qualified projects. Free sample applications enable performance verification under actual operating conditions before full system procurement. Contact technical teams to discuss sample testing arrangements for your specific application.

Contact Us for Temperature Monitoring Solutions

Whether your project involves new substation construction, equipment retrofits, or emergency repairs, FJINNO delivers optimal פתרונות ניטור טמפרטורה tailored to your requirements.

Comprehensive Support Services

  • ✅ Free Technical Consultation: Senior engineers analyze your specific requirements
  • ✅ Custom Solution Design: Tailored systems based on voltage class, נקודות ניטור, and operational parameters
  • ✅ Detailed Proposal Documentation: Complete technical specifications and implementation plans
  • ✅ Reference Case Studies: Access to 500+ successful power customer installations
  • ✅ Free Sample Testing: Evaluation units available for performance validation

FJINNO Fluorescent Fiber Optic System Product Lines

  • Economy Series: 1-8 channel systems for small switchgear applications
  • Standard Series: 8-32 channel configurations for typical transformers and switchgear
  • Premium Series: 32-64 channel flagship systems for large substations and power plants
  • Custom OEM/ODM: Specialized probes, explosion-proof variants, communication protocol customization

מידע ליצירת קשר

📧 אימייל: web@fjinno.net (24-תגובה של שעה)
📱 WhatsApp/WeChat: +86-135-9907-0393
🌐 Website: www.fjinno.net/power-temperature-monitoring
🏢 כתובת: Building 12, U-Valley IoT Industrial Park, כביש Xingye West, פוז'ו, מחוז פוג'יאן, סִין

Free Sample and Technical Support Programs

  • 🎁 Complimentary site survey services
  • 🎁 No-charge solution design engineering
  • 🎁 Free sample evaluation units for qualified projects
  • 🎁 Technical training and commissioning assistance

Don’t let outdated temperature monitoring technology compromise power system safety. Upgrade to fluorescent fiber optic solutions today!

כתב ויתור

The technical parameters, performance comparisons, and application case studies presented in this article serve as general reference information. Actual product performance and project specifications may vary based on specific configurations, operating environments, and application conditions. Temperature ranges, accuracy specifications, and service life data reflect standard laboratory testing conditions; field applications require site-specific evaluation considering environmental factors and equipment status.

All solution selection recommendations address typical application scenarios. Specific project implementations require professional engineering assessment and custom design consultation before deployment. Product performance varies among manufacturers; comparison data represents industry-average benchmarks without targeting specific brands.

Referenced industry statistics, incident data, and performance metrics derive from publicly available sources and industry reports. Specific figures may differ based on statistical methodology and temporal scope. Project implementation results and operational outcomes depend on multiple variables; case studies provide reference examples without constituting performance guarantees.

For accurate technical solutions and specifications tailored to your specific project requirements, contact FJINNO technical teams for site assessment and customized system design.

עודכן לאחרונה: December 2025 | FJINNO – מערכות ניטור טמפרטורה של סיבים אופטיים פלואורסצנטיים

חֲקִירָה

חיישן טמפרטורה בסיבים אופטיים, מערכת ניטור חכמה, יצרן סיבים אופטיים מבוזרים בסין

מדידת טמפרטורה של סיבים אופטיים פלואורסצנטיים מכשיר למדידת טמפרטורה של סיבים אופטיים פלואורסצנטיים מערכת מדידת טמפרטורה של סיבים אופטיים פלואורסצנטית מבוזרת

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