The Best Fiber Optic Temperature Sensor Manufacturer

Welcome to FJINNO, a leading global manufacturer and supplier of advanced fiber optic temperature sensors. We provide robust, reliable, and precise temperature monitoring solutions for the world's most demanding industries.

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Your Trusted Partner and Solution Provider

Expert Manufacturer & Factory

As a dedicated factory, we control the entire production process, ensuring the highest quality for every optical temperature sensor. We are a premier exporter and distributor, providing superior OEM / ODM services.

Custom & Private Label Solutions

We offer a comprehensive custom solution. Partner with us for your private label needs to bring a customized, high-performance fiber optic transducer to market under your own brand.

Wholesale & Dealer Network

Looking for a reliable wholesale partner or dealer? We provide competitive pricing and dedicated support for bulk orders of our advanced fiber optic monitoring systems, ensuring your success.

Our Core Products

Fluorescent Fiber Optic Temperature Sensor

This is our flagship optical fiber temperature sensor. Based on the principle of fluorescence decay, this fluorescence sensor offers unparalleled precision and immunity to electromagnetic interference. It is a device that is responsive to ambient temperature conditions, making it perfect for challenging environments where traditional sensors fail.

Fiber Optic Temperature Monitoring Device

The central unit of our fiber optic sensor systems. This device, often called a monitor temperatury or fiber optic thermometer, interprets the optical signals from multiple sensors, providing real-time data and alarm outputs. It forms the core of any complete online condition monitoring systems.

Fiber Optic Temperature Transmitter

A crucial component for system integration, this transmitter converts the sensor's optical signal into standard industrial formats (e.g., 4-20mA, Modbus, IEC 61850). This allows our fiber optics sensors to seamlessly connect with your existing SCADA, PLC, or substation monitoring infrastructure.

Fiber Optic Temperature Measurement Software System

Our powerful software provides a user-friendly interface for the condition monitoring for electrical systems. It enables advanced data logging, trend analysis, alarm management, and reporting, helping you predict maintenance needs and extend asset life, as highlighted in concepts like "doble life of a transformer 2025".

Oil-immersed Transformer Winding Fiber Optic Sensor

Specifically engineered for direct transformer hot spot monitoring, this winding sensor is designed to be placed directly on the windings inside a tank in transformer. It's completely resistant to transformer oil and high voltage, making it the ultimate tool for measuring winding temperature in a hot transformer.

Temperature Measurement Fiber Optic Extension Cable

Our high-quality, rugged extension cables ensure signal integrity between the fiber optic probe and the monitoring device over long distances. They are essential for applications like wind turbine operation and maintenance or large-scale industrial plants, and include options for a robust fiber optic feedthrough.

How to Apply Our Fiber Optic Measurement Technology

Oil & Dry Type Transformers

Advanced Power Transformer Monitoring

Our core application focuses on condition monitoring of transformer assets. We provide the complete solution for transformer temperature monitoring.

  • Direct transformer winding temperature measurement.
  • Precise hot spot monitoring with our winding temperature sensor.
  • Functions as a modern winding temperature indicator.
  • Monitors transformer bushing and transformer monitor connections.

High Voltage Switchgear

Critical Component Monitoring

Enhance the safety and reliability of your power distribution network with our solutions for high voltage switchgear condition monitoring.

  • Monitors critical switchgear components and bus bars.
  • Prevents failures by detecting overheating in electrical switchgear components.
  • Integrates with any electrical switchgear diagram.
  • A must-have for modernizing switchgear parts.

Generators & Motors

Rotating Equipment Condition Monitoring

Ideal for monitoring the health of large rotating machines, from power generation to industrial motors. Our systems monitor key health indicators.

  • Winding sensor for stator hot spots in hydro generators.
  • Wind turbine condition monitoring for gearbox and generator health.
  • Monitors ose generators and other large motors.
  • Key part of any wind power monitoring strategy.

Semiconductor Processing

Precision Wafer & Process Control

Our wafer sensor technology offers the accuracy needed for advanced semiconductor process control in RF-heavy environments.

  • Accurate wafer temperature measurement during plasma etch.
  • Immune to RF and microwave fields (sensing microwave).
  • Enables tight semiconductor temperature control.
  • The definitive semiconductor temperature sensor.

Medical (MRI / RF Ablation)

Safe & Immune Medical Sensing

The non-metallic nature of our sensor fiber optik makes it the only choice for temperature measurement inside high-field medical devices.

  • Used as an MRI monitor for patient or equipment safety.
  • Provides accurate mr temperature readings.
  • Critical for gb3 application and RF ablation therapies.
  • A trusted breaker monitoring system for medical devices.

Research & Development Labs

Versatile & High-Performance R&D Tool

From cryogenics to materials science, our optical fiber sensor technology provides reliable data for researchers and scientists.

  • High-temperature optical fiber solutions for furnaces.
  • Thermal monitoring in novel experiments.
  • Used in testing advanced power technology.
  • Ideal for power cable monitoring studies.