Principal 10 fabricantes de sensores de temperatura de fibra óptica

This article introduces the principle of fiber optic temperature sensors, the top 10 manufacturers of fiber optic temperature sensors in temperature measurement, and a list of the best fiber optic temperature sensor products.

The temperature measurement principle of fiber optic temperature sensors

The fluorescence temperature measurement device manufactured based on the functional relationship between fluorescence afterglow lifetime and temperature has advantages that traditional temperature measurement methods cannot compare with.

The basic principle of fluorescence temperature measurement

When a substance is excited, such as by short wavelength visible or ultraviolet light, electric field excitation, or chemical reactions, it will absorb and store energy, e transição para um estado excitado com um certo nível de energia vibracional através do estado fundamental. Mas o estado excitado não é estável e pode retornar ao equilíbrio, e quando a fonte de excitação externa para de funcionar, o fenômeno da luminescência continuará por um período de tempo, que é chamado de brilho. Além disso, durante o processo de desativação de moléculas fluorescentes, moléculas de estado excitado instáveis ​​​​farão a transição de níveis de alta energia para níveis de baixa energia por meio de transições de nível de energia, e o excesso de energia emitirá luz na forma de radiação eletromagnética. Portanto, de acordo com os diferentes métodos de excitação, pode ser dividido em fotoluminescência, eletroluminescência, quimioluminescência, e bioluminescência.

De acordo com a lei de Planck, when the energy of the incident light is received by the luminescent material, it will excite electrons in the material to produce electron level transitions, and this process will produce outgoing light with a wavelength of λ. The formula for the energy difference between high and low energy levels is:

E2-E1=k λ v=kf

Na fórmula: E1- the energy of the electron at a lower energy level;

E2- Energy of electrons at higher energy levels;

K – Constante de Planck;

V – the propagation speed of light in vacuum;

F – frequency of light;

λ – The wavelength of the emitted light.

Due to E1 and E2 being in different energy bands, they represent light in a certain band, while the energy in the molecule includes rotational energy generated by electrons and vibrational energy caused by axial elastic vibrations between nuclei. Portanto, quando as moléculas absorvem a radiação luminosa, após transições quânticas, a energia do elétron aumentará do estado fundamental para um nível de energia mais alto, e a energia rotacional e a energia vibracional mudarão simultaneamente, fazendo com que as três energias interajam entre si. Depois que a luz incidente desaparece, o material luminescente continuará a emitir luz por um período de tempo, e a luz emitida é fluorescência; A energia luminosa de alta frequência e de onda curta excitará a luz de onda longa e de baixa frequência, e siga Stokes’ lei.

A base teórica básica do método de medição de fluorescência é que quando a intensidade do espectro linear de fluorescência mostra monotonicidade com a temperatura, e a temperatura da substância fluorescente determina o tempo do processo de extinção de luz, fluorescence temperature measurement can be carried out. Portanto, it is generally divided into fluorescence intensity temperature measurement method, fluorescence lifetime temperature measurement method, and laser induced fluorescence method. Entre eles, the fluorescence lifetime temperature measurement method is not easily affected by the intensity of the excitation light source, coupling degree, and fiber transmission efficiency in the temperature measurement process, and has more obvious advantages in use. The temperature measurement principle is that after the excitation light source is removed, the time for the fluorescent substance to continuously emit fluorescence is called the fluorescence lifetime, which depends on the lifetime of the excited state. The fluorescence lifetime of fluorescent substances is related to the corresponding temperature within a certain temperature range. Fluorescence lifetime refers to the time it takes for the fluorescence intensity to decay to 1/e of its original intensity when the excitation light source is cut off, and its relationship with temperature can be expressed as:

t (T)=1+e – Δ E/(KT) Rs+RTe – Δ E/(KT)

Na fórmula: Rs, RT, K, Δ E – constant;

T – thermodynamic temperature.

From this, it can be seen that the time constant of fluorescence afterglow decay is a single valued function of temperature and is only related to temperature.

Principal 10 fabricantes de sensores de temperatura de fibra óptica

1、Ciência Eletrônica de Inovação de Fuzhou&Companhia de tecnologia., Ltda.

3、Luna Inovações

Luna Innovations is proud of our rich tradition of working in close collaboration with customers to develop the products that meet and exceed our clients’ needs for sensing, teste & medição, monitoramento, and control solutions. This heritage stems from a series of in-house technology innovations and acquisitions.

Fiber optic temperature sensors are immune to the many environmental effects that compromise other measurement technologies, can be embedded and installed in locations traditional temperature sensors cannot and deliver an unprecedented level of spatial detail and data without sacrificing precision and sensitivity.

4、Opsens Soluções

Opsens Solutions’ fiber optic temperature sensors provide second to none performance to various industries.

Our applications include monitoring in Nuclear Magnetic Resonance imaging (RMN) e Radiofrequência (RF) ambientes energéticos.

These sensors are perfectly tailored for energy related applications with high voltage and Electromagnetic disturbances (EMI). They can also survive radiated environment and are immune to microwave energy.

These sensors may be used in broad range of applications: from cryogenic environment (such as superconducting magnet), to high temperature applications up to 350 Celsius.

5、Ômega Engenharia, Inc..

6、Yokogawa

Yokogawa Electric Corporation announces that it will release the DTSX^®3000 distributed temperature sensor on August 12. With a one meter spatial resolution, this distributed temperature sensor can measure the temperature along fiber-optic cables up to 50 km in length, eight times the distance possible with our previous model. Em termos de distância de medição e resolução de temperatura, este é um dos sensores de temperatura distribuídos de melhor desempenho do setor.

O DTSX3000 é adequado para aplicações de manutenção de instalações e infraestruturas que necessitam de monitoramento de temperatura em longas distâncias ou em áreas amplas. Aplicações específicas incluem a detecção de vazamentos de gases e líquidos em tanques e outras grandes instalações de produção, e a detecção de níveis anormais de calor em linhas de energia.

7、Sensores de temperatura de fibra óptica FISO

Os sensores de temperatura de fibra óptica da FISO fornecem, estável, e medições repetíveis. Essas medições são baseadas em variações da luz refletida — quando comparada com a luz emitida — devido à expansão térmica do vidro altamente estável usado no sensor.. The fiber optic lead cable can be up to several meters long without affecting the quality or the accuracy of the results.

8、Althen Sensors and Controls

Sensores de temperatura de fibra óptica

Fiber optic temperature sensors use the properties of optical fibers to measure changes in temperature. These sensors offer several advantages over traditional electronic temperature sensors and are often used in environments with high temperatures, interferência eletromagnética (EMI) or explosion hazards.

9、 Qualitrol

QUALITROL manufactures monitoring and protection devices for high value electrical assets and OEM manufacturing companies. Estabelecido em 1945, QUALITROL produces thousands of different types of products on demand, customized to meet unique requirements.
The Neoptix product line includes fiber optic temperature sensors for transformer windings temperature monitoring and for laboratory, industrial, e aplicações médicas.

10、Energia Avançada

Advanced Energy offers highly reliable and precise fiber optic sensors for temperature measurement and sensing applications. The Luxtron® patented FluorOptic® technology allows for accurate temperature sensing in harsh environments where conventional sensors would fail, such as in semiconductor manufacturing, eletrônica de potência, and aerospace industries. With a variety of options to meet different application needs, these fiber optic sensors provide an ideal solution for monitoring temperature and ensuring process efficiency and product quality. Adicionalmente, Advanced Energy’s WaveCaptureTM Fiber Bragg Grating (FBG) sensing solutions offer a reliable and cost-effective way to monitor strain and temperature in structures and materials. With the ability to measure strain with high accuracy, these FBG sensors are used in a variety of applications including aerospace, civil engineering, and oil and gas industries.

Ranking of the Best Fiber Optic Temperature Sensor Products

1、Sondas fluorescentes de sensor de temperatura de fibra óptica

Fluorescent fiber optic temperature probe has good electrical insulation, interferência anti-eletromagnética, resistência à corrosão química, no pollution and many other traditional temperature sensors can not be compared with the advantages.

2、Cabo óptico de detecção de temperatura blindado de fibra óptica para medição de temperatura distribuída

Sensor de temperatura por fibra óptica, FOTS is a temperature measurement technology based on optical fiber transmission signals, which utilizes the physical properties of optical fibers to achieve the transmission and measurement of temperature signals. The temperature sensing fiber optic sensor consists of a fiber optic transmission module and a temperature sensing head, which can measure temperature at any position and in any environment.

3、Sensor de temperatura de grade de fibra Bragg

The IF-FBG fiber optic grating temperature sensor is a new type of temperature sensor developed specifically for temperature measurement of power switchgear, utilizing the inherent temperature sensing characteristics of fiber optic gratings. It is suitable for temperature monitoring and fire alarm at high-voltage power switchgear, juntas de cabos de alta tensão, etc.. in power plants, subestações, e outros lugares. It has many advantages such as high temperature measurement accuracy, resistência de alta tensão, anti creep, resistência à corrosão, strong lightning resistance, e nenhuma forte interferência eletromagnética.

Sensor de temperatura de fibra óptica, Sistema de monitoramento inteligente, Fabricante distribuído de fibra óptica na China