#FBG interrogators

[optromix]

Fiber Bragg Grating (FBG) Sensors for Railways

Fiber optic solutions for monitoring systems in the railway industryFiber Bragg grating sensors characteristicsFiber Bragg grating sensors in field projects

Fiber Bragg grating (FBG) sensors have already been applied in various applications and still arouse great production interest. They are commonly used in structural health monitoring for aerospace, civil engineering, oil & gas, etc.

As for the railway industry, fiber optic technology has made a substantial contribution to its development. It is anticipated that within a few years the number of goods that will be transported by railways will be increased, as well as the number of passengers. This, in turn, will lead to the growth of the axle load and trains' faster speeds operating.

That's why there is a great need for a full understanding of the rails' structural and operating conditions as well as for providing safe and reliable operating conditions. So modern innovative technologies are required. Fiber optic solutions for monitoring systems in the railway industry

In railways, common monitoring systems use strain gauge sensors. The sensors constantly measure resistance caused by the stress transmitted by the rail when the train runs through it. This fiber optic technology is already prominent due to its effectiveness. However, it still has several shortcomings. For example, it is expensive, huge and has difficulties in usage, in comparison with modern FBG sensors. Moreover, the most important disadvantage is that they can be affected by electromagnetic interference. FBG sensors are immune to the external interference such as electromagnetic interference, lightning and many other external disturbances.

Because of this, fiber Bragg grating sensors are getting more and more applications in high-speed railway networks. Applications are train weight estimation, measurement of train speed for real time, wheel imbalance detection, etc. It is clear from experiments that FBG sensors are more appropriate as railway monitoring systems compared to electrical ones. Fiber Bragg grating sensors characteristics

FBG sensors provide many crucial features for unique operational conditions in railways. In comparison with usual electrical sensors, fiber Bragg grating sensors have EMI/RFI immunity, multiplexing capability and can offer interrogation for long distances. In FBGs the data is wavelength-encoded, which makes the signals less susceptible to intensity fluctuations. Moreover, the fiber optic cable can be interrogated from either end, offering redundancy to FBG sensing networks. Plus, FBGs have a self-calibration capability. The strain and temperature measured findings is an absolute parameter. So there is no dependency on the measurement value and losses between the interrogation unit and the FBGs. To fabricate FBG sensors, FBGs are packaged and transformed into different types of transducers. That makes it possible to install them on the rail track fasteners, clips, bogie, train body, chassis, and axle boxes of a train to provide ongoing inspection for health checking.

In addition to that, FBG sensors can be interrogated at very high-speeds.

Providing reliable operational conditions, fiber optic designs can measure a wide range of other parameters such as inclination and acceleration through the modulation of light in reaction to the environment. Therefore, one FBG interrogator can work with a lot of FBG sensors to measure many options at the same time at different locations over the vast territory. The sensing signals can be read at distances more than 100 km away.

These features are especially useful for the railway industry because they allow simplifying the installations a lot and reducing costs. Fiber Bragg grating sensors in field projects

Over the past few years, specialists have safely held a number of field trial railway projects involving FBG sensors. For example, in 2007, about fifty FBG-based vibration sensors were installed along the East Rail Link that connects Hong Kong and Mainland China. Then fiber optic solutions were applied in metro lines of Hong Kong, part of the Beijing-Shanghai High-speed Rail Link, and in Delhi Airport Metro Express Line.

In Hong Kong this fiber optic technology was applied on a passenger rail system as a structural health monitoring system. The FBG sensors were attached to the bottom of the carriages. The goal was temperature and strain measurement. The fiber optic system supplied all the necessary data including rail tracks' and carriages' deformation. The acquired information helped to assess the rates of the corrosion and bearing wear.

According to the results, due to FBG sensors, costs of maintenance were greatly reduced. Moreover, it helped to avoid or prevent problems at early stages due to the early detection of excessive vibrations. All these works showed that FBG sensors are superior in comparison with conventional sensors in many essential aspects.

Nowadays, fiber optic solutions are regarded as one the most cost-effective technology that helps in monitoring the condition and structural health of the carriages, tracks, and under frame equipment in railway systems. There are still some parameters that need to be improved, like the lack of proprietary and custom specifications. However, in the future major railway operators can apply modern FBG sensors, gaining more field experience.

Optromix is a fast-growing vendor of fiber Bragg grating (FBG) product line such as fiber Bragg grating sensors, for example, fbg strain sensors, FBG interrogators and multiplexers, Distributed Acoustic Sensing (DAS) systems, Distributed Temperature Sensing (DTS) systems. The company creates and supplies a broad variety of fiber optic solutions for monitoring worldwide. If you are interested in structural health monitoring systems and want to learn more, please contact us at info@optromix.com

[fiberstrike]

FiberStrike

The leader in FBG Sensors and Fiber Optic Sensors. The CEL Advanced Technologies Group pioneers the development of innovative Fiber Optic sensors and sensing systems for different applications. Our various fiber optic sensors, manhole switches, intrusion detection systems, and more offer unique solutions to monitoring challenges.

Address: 361 S. 52nd Street, Tempe, Arizona, 85281, United States

Phone : (480) 967-2501

Business Email : sales@cel-atg.com

Website : https://fiberstrike.com/

[crispyperfectiondeer]

FBG Interrogator Price: What You Need to Know Before You Buy

Our comprehensive guide covers features, benefits and cost of FBG interrogators. Find out what you need before your purchase of a fiber optic interrogator. Are you considering purchasing an FBG interrogator but unsure of the price? It’s important to do your research and understand what you’re getting into before making any investment. In this blog post, we’ll explore everything you need to know…

[super-excell-reports-things]

FBG Interrogator Market Potential Growth, Share, Demand and Analysis of Key Players- Research Forecasts to 2018-2019

Excell Reports announces the addition of new study based research report on FBG Interrogator Market to their suite of offerings. The report provides key statistics on the market status of the FBG Interrogator manufacturers and is a valuable source of guidance and direction for companies and individuals interested in the industry. Firstly, the report provides a basic overview of the industry including its definition, applications and manufacturing technology. Then, the report explores the international major industry players in detail. In this part, the report presents the company profile, product specifications, capacity, production value, and 2013-2018 market shares for each company. 

The total market is further divided by company, by country, and by application/type for the competitive landscape analysis. The report then estimates 2018-2023 market development trends of FBG Interrogator industry. Analysis of upstream raw materials, downstream demand, and current market dynamics is also carried out. In the end, the report makes some important proposals for a new project of FBG Interrogator Industry before evaluating its feasibility. Overall, the report provides an in-depth insight of 2013-2023 global FBG Interrogator industry covering all important parameters.

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The report features in-depth analysis of the global market with a focus on factors that influence the market, such as drivers, restraints, and key trends. The report will let you discover the future market prospects along with the most lucrative areas in the industry. This research based study lets you assess forecasted sales at overall world market and regional level with the interviews, financial results, and revenue predictions. It also analyses the import and export and draws a market comparison focused upon the Development Trend.

The report features:

Overview of the industry, including definitions, classification and segmentation on the basis of application, product, geography and competitive market share

All-inclusive assessment of the market

Industry validated and statistically-supported market data

Facts and statistics

Business outlook and developments

Market forecasts for the projected time frame

Qualitative analyses (including SWOT analysis), product profiles and commercial developments.

Key participants, company profiles, market trends, and business strategies

To view the table of contents and know more details please visit: https://www.excellreports.com/product/technology-media-telecommunications/semiconductor-electronics/global-fbg-interrogator-market-report-2019-history-present-and-future/

Regional Insights:

The report lets you have an edge across the targeted regions with the comprehensive competitive framework. It analyzes the market on the basis of segmentation at a regional level coupled with price rate, profit, forecast, and estimates. The report studies the use of FBG Interrogator across several sectors to study and projects the future growth prospects. The report covers regional analysis of the market with respect to the existing market size and future prospects. It features historical stats, data and revenue estimation of the market segments and sub-segments in accordance with the top geographic regions and their countries. It discusses the current scenario of the FBG Interrogator market across major geographic segments, Europe, Southeast Asia and North America along with analysis of various country level United States, China, Japan and India markets for the demand of FBG Interrogator across each of these regions.

Competitive Landscape:

The FBG Interrogator market is characterized by the presence of a significant number of market participants. The research report lets you identify key organizations holding the greatest potential. Is also helps you stay ahead by figuring out capabilities, commercial prospects and progress of the key players. It also analyzes latest advancements in technology along with major industry participants profiled in the report. A review of macro and micro factors vital for the present market participants and new companies lets you evaluate competitive dynamics. 

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[atgrating01]

FBG Temperature Sensor

The sensitivity of the FBG temperature sensor is sometimes referred to as the resolution or temperature sensitivity of the sensor, that is, the minimum temperature change that the sensor can measure.

To be precise, the sensitivity of each FBG temperature sensor is different, mainly determined by the reflection wavelength of the FBG and the natural characteristics of the glass filament used in the fiber, and sometimes it is also related to the sensor packaging method. The method can sensitize or desensitize the FBG.

Types of FBG Temperature Sensor

FBG Temperature Sensor CT-01

Ceramic housed temperature sensor CT-01, high temperature and electric power resistance, makes it perfectly suitable for the temperature sensing in power station, oil & gas industries.

FBG Temperature Sensor ST-01

Stainless Steel tube housed temperature sensor ST-01, waterproof, commonly used in long-time harsh environmental temperature sensing in railway, bridge, dam, tunnel, etc.

What Is Fbg Temperature Sensor's Sensitivity?

The FBG temperature sensor from AtGrating, in the vicinity of our common 1550nm C-band, the sensitivity (resolution) of the FBG temperature sensor is about 11pm/℃, which means that the measured object or the measured environment is for every 0.1℃ change in temperature, the reflected wavelength of the fiber grating temperature sensor changes by 1pm. At this point we can say that the sensitivity (resolution) of the fiber grating temperature sensor is 0.1℃.

It should be further pointed out that the sensitivity or resolution of the FBG temperature sensor we are talking about is 0.1℃. This statement is more from or limited by the fiber grating interrogator (not limited by the sensor itself), if a interrogator with higher resolution is used, so that it can detect wavelength changes below picometers, the sensitivity or resolution of the fiber grating temperature sensor we define here will also be correspondingly improved.

[baphoton]

C Band ASE Optical Source

The ASE (Amplified spontaneous emission) optical source module is designed for optical sensor systems, such as FBG Sensor Interrogator, Optical Fiber Gyroscope. The main parts are Erbium-doped fiber and a high-quality pump laser. The unique ATC and APC circuit path ensure the output stability.

Enter our official website to learn more.

[fumpkins]

A fresh sensation in sensing technology

Fig1 An interrogator includes 2 core components: a fiber optics sensing unit and a spectrometer. One of the most pre-owned optical sensing units is the fiber Bragg grating (FBG), which shows a wavelength of light that alters in action to variations in temperature level and/or stress. A spectroscopic instrument in the interrogator finds these modifications. Credit: SPIE.

TheInternet of Things (IoT) is a technology category that consists of house devices and other products embedded with electronic devices, software application, sensing units, and actuators that link and exchange information. One essential IoT technology is fiber opticssensing

An interrogator for fiber optics sensing evaluates modifications in temperature level and/or pressure from information sent out from sensing units. In this gadget, a spectrometer, a crucial part for signal analysis, is utilized for determining the spectrum of light. (Figure 1)

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Previously, fiber optics sensing was carried out just by gadgets geared up with a costly spectrometer with a sub-nanometer scale high resolution due to a theoretical limitation of the resolution of the sensing unit.

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Scientists at Osaka University presented a brand-new very spectral resolution technique for multi-channel spectrometers to standard interrogators for fiber opticssensing As an outcome, they carried out fiber optics temperature level sensing on the sub-nanometer scale with less-expensive spectrometers. (Figure 2)

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Their research study outcomes existed at the global conference “Photonics West 2018” held by The International Society for Optical Engineering (SPIE) on January 31, 2018.

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“Use of this technology will allow for high-speed, real-time optical fiber temperature sensing at performance levels typical in conventional devices at a low price. This will promote applications of this technology in a wide range of fields, including temperature sensing and strain sensing, which have attracted attention as IoT technologies,” lead author Tsuyoshi Konishi stated.

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The market for fiber optics sensing is anticipated to reach over $300 million in the next couple of years. (Figure 3) This group’s accomplishments will have the ability to decrease expenses, a significant obstacle in broadening fiber optics sensing technology.

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Fig2 Fiber Bragg Grating (FBG) technology- based temperature level sensing units extremely Improved level of sensitivity, revealing modifications in temperature level in a thermostatic chamber within a variety of 0 ~ 50 ° C(************************************************************************************************************************************************** )increments of 10 ° C. Use of an FBG temperature level sensing unit boosted the spectral resolution of commercially readily available spectrometers in increments of 10 ° C. Credit: SPIE.

Fig3 Fiber Optic Sensor/Sensing(DFOS) Market Analysis dispersed by Grand ViewResearch Credit: Grand ViewResearch

Explore even more: Researchers produce microlaser that flies along hollow fiber optics.

. More info: YuYamasaki et al. Compact and affordable multi-channel optical spectrometer for great FBG sensing in IoT technology, OpticalData Science: Trends Shaping the Future of Photonics(2018). DOI: 10.1117/122297230

Provided by: OsakaUniversity.

New post published on: https://livescience.tech/2018/06/04/a-fresh-sensation-in-sensing-technology/

[jobsaggregation]

[Full time] Sales engineer at Jobisite

We are looking for a sales engineer who is experienced in the fiber optic field to provide technical support and advice on a range of products and perform technical sales. Job requirements: - 25 to 45 years old; - Education in engineering, applied science, or physics; - Experience in a field of fiber optics, fiber optic sensor installation or DTS system installation; - Able to travel around the USA to attend trade shows and conferences; - Fluent English (knowledge of Spanish and French is desirable); - Good presentation skills; - Analytical and problem-solving skills; - The ability to build relationships with clients quickly; - Based in the Northeastern United States. Job duties and responsibilities: - Working with clients; Search for new clients, managing and interpreting customer requirements; persuade clients that a product or service will best satisfy their needs; develop long-term relationships with clients, through managing and interpreting their requirements. - Presenting the technology & Marketing; Provide pre-sales technical assistance and product education; support marketing activities by attending trade shows, conferences, and other marketing events; make technical presentations and demonstrate how a product meets client needs; prepare reports for head office and keep customer records. - Working with the equipment; Work on after-sales support services and provide technical back up as required; help in the design of custom-made products; determine improvements by analyzing cost-benefit ratios of equipment, supplies, or service applications in a customer environment. This position is part-time at the moment, but we offer an ability to work full time later on. Salary: $50.000-60.000/year How to apply Please contact Miss Lisa Kucherova at lisa.kucherova @ optromix.com to apply. Make sure to include a CV with your application. About us Optromix, Inc. is a U.S. manufacturer of innovative fiber optic products for global market, based in Cambridge, MA. We offer a wide range of fiber Bragg grating products: FBG sensors, FBG interrogators, and multiplexers, distributed temperature sensing systems, as well as our own cutting-edge customized fiber optic Bragg grating product line and fiber Bragg grating sensor systems. Our core value is to create unique and innovative technologies that bring the most value to our customers. We are an international team of scientists, engineers, and managers who are experienced in the field of fiber optics and are passionate about developing new technologies. We are continually expanding, offering exciting opportunities to talented people. You can look forward to working with highly skilled professionals who have significant experience in fiber optic technology development and production. People are our greatest asset. We invest heavily in every employee and provide a personal approach to all our workers. Reference : Sales engineer jobs Apply from jobsaggregation.com http://jobsaggregation.com/job/3970/sales-engineer-at-jobisite/

[jobrealtime]

[Full time] Sales engineer at Jobisite

We are looking for a sales engineer who is experienced in the fiber optic field to provide technical support and advice on a range of products and perform technical sales. Job requirements: - 25 to 45 years old; - Education in engineering, applied science, or physics; - Experience in a field of fiber optics, fiber optic sensor installation or DTS system installation; - Able to travel around the USA to attend trade shows and conferences; - Fluent English (knowledge of Spanish and French is desirable); - Good presentation skills; - Analytical and problem-solving skills; - The ability to build relationships with clients quickly; - Based in the Northeastern United States. Job duties and responsibilities: - Working with clients; Search for new clients, managing and interpreting customer requirements; persuade clients that a product or service will best satisfy their needs; develop long-term relationships with clients, through managing and interpreting their requirements. - Presenting the technology & Marketing; Provide pre-sales technical assistance and product education; support marketing activities by attending trade shows, conferences, and other marketing events; make technical presentations and demonstrate how a product meets client needs; prepare reports for head office and keep customer records. - Working with the equipment; Work on after-sales support services and provide technical back up as required; help in the design of custom-made products; determine improvements by analyzing cost-benefit ratios of equipment, supplies, or service applications in a customer environment. This position is part-time at the moment, but we offer an ability to work full time later on. Salary: $50.000-60.000/year How to apply Please contact Miss Lisa Kucherova at lisa.kucherova @ optromix.com to apply. Make sure to include a CV with your application. About us Optromix, Inc. is a U.S. manufacturer of innovative fiber optic products for global market, based in Cambridge, MA. We offer a wide range of fiber Bragg grating products: FBG sensors, FBG interrogators, and multiplexers, distributed temperature sensing systems, as well as our own cutting-edge customized fiber optic Bragg grating product line and fiber Bragg grating sensor systems. Our core value is to create unique and innovative technologies that bring the most value to our customers. We are an international team of scientists, engineers, and managers who are experienced in the field of fiber optics and are passionate about developing new technologies. We are continually expanding, offering exciting opportunities to talented people. You can look forward to working with highly skilled professionals who have significant experience in fiber optic technology development and production. People are our greatest asset. We invest heavily in every employee and provide a personal approach to all our workers. Reference : Sales engineer jobs Apply from JobRealtime.com http://jobrealtime.com/job/4012/sales-engineer-at-jobisite/

[qoholicusa]

[Full time] Sales engineer at Jobisite

We are looking for a sales engineer who is experienced in the fiber optic field to provide technical support and advice on a range of products and perform technical sales. Job requirements: - 25 to 45 years old; - Education in engineering, applied science, or physics; - Experience in a field of fiber optics, fiber optic sensor installation or DTS system installation; - Able to travel around the USA to attend trade shows and conferences; - Fluent English (knowledge of Spanish and French is desirable); - Good presentation skills; - Analytical and problem-solving skills; - The ability to build relationships with clients quickly; - Based in the Northeastern United States. Job duties and responsibilities: - Working with clients; Search for new clients, managing and interpreting customer requirements; persuade clients that a product or service will best satisfy their needs; develop long-term relationships with clients, through managing and interpreting their requirements. - Presenting the technology & Marketing; Provide pre-sales technical assistance and product education; support marketing activities by attending trade shows, conferences, and other marketing events; make technical presentations and demonstrate how a product meets client needs; prepare reports for head office and keep customer records. - Working with the equipment; Work on after-sales support services and provide technical back up as required; help in the design of custom-made products; determine improvements by analyzing cost-benefit ratios of equipment, supplies, or service applications in a customer environment. This position is part-time at the moment, but we offer an ability to work full time later on. Salary: $50.000-60.000/year How to apply Please contact Miss Lisa Kucherova at lisa.kucherova @ optromix.com to apply. Make sure to include a CV with your application. About us Optromix, Inc. is a U.S. manufacturer of innovative fiber optic products for global market, based in Cambridge, MA. We offer a wide range of fiber Bragg grating products: FBG sensors, FBG interrogators, and multiplexers, distributed temperature sensing systems, as well as our own cutting-edge customized fiber optic Bragg grating product line and fiber Bragg grating sensor systems. Our core value is to create unique and innovative technologies that bring the most value to our customers. We are an international team of scientists, engineers, and managers who are experienced in the field of fiber optics and are passionate about developing new technologies. We are continually expanding, offering exciting opportunities to talented people. You can look forward to working with highly skilled professionals who have significant experience in fiber optic technology development and production. People are our greatest asset. We invest heavily in every employee and provide a personal approach to all our workers. Reference : Sales engineer jobs Apply from qoholic.com http://qoholic.com/job/4121/sales-engineer-at-jobisite/

[optromix]

Fiber optic sensing solutions for extreme conditions

Electrical sensing systems (strain sensors, string-based, potentiometric, etc.) have been the main method of measuring physical and mechanical phenomena for decades. Despite their widespread application, electric sensing systems have a number of disadvantages, such as loss of signal transmission, susceptibility to electromagnetic interference, the need to organize an intrinsically safe electrical circuit (if there is a danger of explosion). 

These inherent limitations make electrical sensors unsuitable or difficult to use for a number of tasks. The application of fiber optic sensing solutions is an excellent way to overcome these problems. The signal in fiber optic sensors is light in the optical fiber used instead of electricity in the copper wire of standard electrical sensors.

Over the past twenty years, a huge number of innovations in optoelectronics and in the field of fiber optic telecommunications have led to a significant reduction in the price of fiber sensor components and to a significant improvement in the quality of fiber optic systems. These improvements allow fiber optic sensors to move from the category of experimental laboratory devices to the category of widely used devices in such areas as monitoring of buildings and structures, etc.

One of the most commonly used fiber optic sensors is considered to be fiber Bragg grating sensors (FBG). The fiber Bragg gratings in these sensors reflect a light signal whose spectral characteristic (wavelength) shifts along with changes in the measured parameter (temperature and/or deformation). During the manufacture of gratings, a region with a periodic change in the refractive index is created inside the optical fiber core, herewith, this region is directly called the FBG.

Optical fibers and fiber sensors are non-conductive, electrically passive, and immune to EM interference. The interrogation using a tunable high-power laser allows measurements to be made over long distances with virtually no signal loss. Additionally, in contrast to the electrical sensing system, each optical fiber channel can interrogate a variety of FBG sensors, which significantly reduces the size and complexity of such a fiber optic system.

Fiber optic sensing solutions are ideal for applications where conventional electrical sensors (strain gauges, strings, thermoresistors, etc.) have proved difficult to use due to extreme conditions (long distances, EM fields, explosion protection, etc.). Since the installation and operation of fiber sensors are similar to conventional electrical sensors, it is easy to switch to fiber optic solutions. Understanding how such fiber optic systems work and the benefits of using them can greatly facilitate various measurement tasks (for example, structural health monitoring).

In short, the main advantages of FBG sensors include:

● high sensitivity and performance;

● relatively large range of measured deformations;

● the best weight and overall dimensions, small size;

● high noise immunity, insensitivity to electromagnetic interference, such as microwave field, spark discharge, magnetic fields, electromagnetic pulses of various nature and any intensity;

● absolute electrical safety due to the absence of electrical circuits between the fiber optic sensor and the recording module;

● full electrical, explosion and fire safety, high chemical resistance of sensor elements.

The conditions of the environment and controlled conditions in which one or more external factors — radiation, temperature, electromagnetic field, aggressiveness, humidity, pressure, and deformation — have the maximum possible constant values are regarded as extreme. 

In such conditions, primary converters of control systems for dangerous technological processes (oil production, transportation, and processing of oil and gas, nuclear power generation, storage of radioactive waste), monitoring and diagnostics systems for complex construction and engineering structures (dams, bridges, mines, etc.), and military and emergency management systems operate.

Currently, fiber optic technologies are widely used in various fields of science and technology. One of the main applications of fiber optics is the creation of portable high-sensitivity sensors. Pressure, strain, vibration, tilt, linear motion, and temperature sensors are widely applied in the industries of structural health monitoring pipelines, heating lines, power cables, mines, etc.

Radiation

Compared to fiber sensors, the lack of power supply at the location of electrical sensing systems does not prevent continuous remote monitoring of dangerous objects, such as nuclear power plants, in an emergency beyond design situations. For instance, the well-known events at the Japanese nuclear power plant "Fukushima-1" in 2011 were characterized by the fact that during the two weeks when the nuclear power plant was completely de-energized, there was no information from electronic sensors, which was extremely important for monitoring the technical condition of the emergency station.

Temperature

Problems of standard sensing systems control of tightness of tanks with liquid hydrogen, which is the fuel of modern rocket engines, has a temperature of -253 °C and very high fluidity, due to the fact that at such temperatures, most materials become very fragile, and the sensitivity of palladium sensors quickly decreases. 

It is problematic to measure the pressure and dryness of superheated steam in gas generators and superheated gas in jet engine nozzles at temperatures up to + 600 °C since piezoelectric sensors quickly degrade at temperatures above + 300 °C. Modern FBG sensors of physical quantities are heat-resistant (up to +2300 °C) and cold-resistant (up to -270 °C). This provides reliable and long-term monitoring of the technical condition of high-temperature and cryogenic objects.

Electromagnetic interference

Measurements of physical quantities using electrical sensing systems in conditions of high-power electromagnetic interference, including guidance on coaxial electrical cables and sensors from lightning discharges, in conditions of monitoring the patient's pulse in a medical nuclear magnetic resonance facility, as well as measurements of high voltages and high currents in electrical engineering, are highly problematic.

Fiber Bragg grating sensors are completely immune to electromagnetic interference and are stable insulators. This makes it possible to measure high voltages up to 800 kV and high currents up to 200 kA with high accuracy (class 02s) by fiber optic sensing technology.

Aggressive environment

Measurements of physical quantities of chemically aggressive media, long — term measurements of deformation of dynamically loaded objects and structures, as well as multi-sensor measurements-with the number of control points in several hundred and thousands, are also problematic for electrical sensing systems since the volume of measuring electrical cables is unacceptably increasing.

Distributed fiber optic sensors are multi-sensors: up to 10 thousand consecutive intra-fiber sensors can be used in one optical fiber (fiber optic cable) to measure physical quantities (temperature, strain, seismoacoustics, pressure, radiation, etc.). Multimode fiber optic cables allow performing remote measurements with high accuracy using borehole video cameras, and temperature fields — using pyrometers and thermal imagers.

Metrological calibration

A serious problem of electrical sensing systems embedded in objects (in the concrete of hydraulic dams and bridges, in the pylons and walls of high-rise buildings, etc.) presents the practical difficulty of their periodic calibration (metrological verification).

Modern fiber sensors have the function of metrological self-monitoring (FMSM) due to the multimodality of the optical signal, which allows for self-calibration of fiber optic sensors in real-time without stopping the controlled processes and without verification standards.

In the last decade, there were implemented many similar applications of modern fiber sensors and systems in extreme environments of nuclear, oil and gas and aerospace industries, shipbuilding, hydraulic engineering, energy, construction, military, and natural emergencies.

Moreover, the durability of FBG sensors in these extreme conditions creates an obvious advantage of their use in the energy, oil and gas, aerospace, construction, and transport industries in comparison with non-optical types of measuring systems.

Thus, the extreme operating conditions of fiber Bragg grating sensors, for example in wells (extreme parameters, flammable, aggressive and abrasive environments) or power plants (ultra-high currents and discharges, voltages and fields, significant ionizing radiation), actually belong to the usual operating conditions of fiber optic sensors.

If you are looking for reliable fiber optic sensing solutions for structural health monitoring, you should choose the Optromix company. Optromix is a fast-growing vendor of fiber Bragg grating (FBG) product line such as fiber Bragg grating sensors, FBG interrogators and multiplexers, Distributed Acoustic Sensing (DAS) systems, Distributed Temperature Sensing (DTS) systems. The company creates and supplies a broad variety of fiber optic solutions for monitoring worldwide. If you are interested in structural health monitoring systems and want to learn more, please contact us at info@optromix.com 

[qoholic]

[Full time] Sales engineer at Jobisite

We are looking for a sales engineer who is experienced in the fiber optic field to provide technical support and advice on a range of products and perform technical sales. Job requirements: - 25 to 45 years old; - Education in engineering, applied science, or physics; - Experience in a field of fiber optics, fiber optic sensor installation or DTS system installation; - Able to travel around the USA to attend trade shows and conferences; - Fluent English (knowledge of Spanish and French is desirable); - Good presentation skills; - Analytical and problem-solving skills; - The ability to build relationships with clients quickly; - Based in the Northeastern United States. Job duties and responsibilities: - Working with clients; Search for new clients, managing and interpreting customer requirements; persuade clients that a product or service will best satisfy their needs; develop long-term relationships with clients, through managing and interpreting their requirements. - Presenting the technology & Marketing; Provide pre-sales technical assistance and product education; support marketing activities by attending trade shows, conferences, and other marketing events; make technical presentations and demonstrate how a product meets client needs; prepare reports for head office and keep customer records. - Working with the equipment; Work on after-sales support services and provide technical back up as required; help in the design of custom-made products; determine improvements by analyzing cost-benefit ratios of equipment, supplies, or service applications in a customer environment. This position is part-time at the moment, but we offer an ability to work full time later on. Salary: $50.000-60.000/year How to apply Please contact Miss Lisa Kucherova at lisa.kucherova @ optromix.com to apply. Make sure to include a CV with your application. About us Optromix, Inc. is a U.S. manufacturer of innovative fiber optic products for global market, based in Cambridge, MA. We offer a wide range of fiber Bragg grating products: FBG sensors, FBG interrogators, and multiplexers, distributed temperature sensing systems, as well as our own cutting-edge customized fiber optic Bragg grating product line and fiber Bragg grating sensor systems. Our core value is to create unique and innovative technologies that bring the most value to our customers. We are an international team of scientists, engineers, and managers who are experienced in the field of fiber optics and are passionate about developing new technologies. We are continually expanding, offering exciting opportunities to talented people. You can look forward to working with highly skilled professionals who have significant experience in fiber optic technology development and production. People are our greatest asset. We invest heavily in every employee and provide a personal approach to all our workers. Reference : Sales engineer jobs Apply from qoholic.com http://qoholic.com/job/4121/sales-engineer-at-jobisite/

[jobsaggregation1]

[Full time] Sales engineer at Jobisite

We are looking for a sales engineer who is experienced in the fiber optic field to provide technical support and advice on a range of products and perform technical sales. Job requirements: - 25 to 45 years old; - Education in engineering, applied science, or physics; - Experience in a field of fiber optics, fiber optic sensor installation or DTS system installation; - Able to travel around the USA to attend trade shows and conferences; - Fluent English (knowledge of Spanish and French is desirable); - Good presentation skills; - Analytical and problem-solving skills; - The ability to build relationships with clients quickly; - Based in the Northeastern United States. Job duties and responsibilities: - Working with clients; Search for new clients, managing and interpreting customer requirements; persuade clients that a product or service will best satisfy their needs; develop long-term relationships with clients, through managing and interpreting their requirements. - Presenting the technology & Marketing; Provide pre-sales technical assistance and product education; support marketing activities by attending trade shows, conferences, and other marketing events; make technical presentations and demonstrate how a product meets client needs; prepare reports for head office and keep customer records. - Working with the equipment; Work on after-sales support services and provide technical back up as required; help in the design of custom-made products; determine improvements by analyzing cost-benefit ratios of equipment, supplies, or service applications in a customer environment. This position is part-time at the moment, but we offer an ability to work full time later on. Salary: $50.000-60.000/year How to apply Please contact Miss Lisa Kucherova at lisa.kucherova @ optromix.com to apply. Make sure to include a CV with your application. About us Optromix, Inc. is a U.S. manufacturer of innovative fiber optic products for global market, based in Cambridge, MA. We offer a wide range of fiber Bragg grating products: FBG sensors, FBG interrogators, and multiplexers, distributed temperature sensing systems, as well as our own cutting-edge customized fiber optic Bragg grating product line and fiber Bragg grating sensor systems. Our core value is to create unique and innovative technologies that bring the most value to our customers. We are an international team of scientists, engineers, and managers who are experienced in the field of fiber optics and are passionate about developing new technologies. We are continually expanding, offering exciting opportunities to talented people. You can look forward to working with highly skilled professionals who have significant experience in fiber optic technology development and production. People are our greatest asset. We invest heavily in every employee and provide a personal approach to all our workers. Reference : Sales engineer jobs Apply from http://jobsaggregation.com/job/3970/sales-engineer-at-jobisite/

[jobrealtimecom]

[Full time] Sales engineer at Jobisite

We are looking for a sales engineer who is experienced in the fiber optic field to provide technical support and advice on a range of products and perform technical sales. Job requirements: - 25 to 45 years old; - Education in engineering, applied science, or physics; - Experience in a field of fiber optics, fiber optic sensor installation or DTS system installation; - Able to travel around the USA to attend trade shows and conferences; - Fluent English (knowledge of Spanish and French is desirable); - Good presentation skills; - Analytical and problem-solving skills; - The ability to build relationships with clients quickly; - Based in the Northeastern United States. Job duties and responsibilities: - Working with clients; Search for new clients, managing and interpreting customer requirements; persuade clients that a product or service will best satisfy their needs; develop long-term relationships with clients, through managing and interpreting their requirements. - Presenting the technology & Marketing; Provide pre-sales technical assistance and product education; support marketing activities by attending trade shows, conferences, and other marketing events; make technical presentations and demonstrate how a product meets client needs; prepare reports for head office and keep customer records. - Working with the equipment; Work on after-sales support services and provide technical back up as required; help in the design of custom-made products; determine improvements by analyzing cost-benefit ratios of equipment, supplies, or service applications in a customer environment. This position is part-time at the moment, but we offer an ability to work full time later on. Salary: $50.000-60.000/year How to apply Please contact Miss Lisa Kucherova at lisa.kucherova @ optromix.com to apply. Make sure to include a CV with your application. About us Optromix, Inc. is a U.S. manufacturer of innovative fiber optic products for global market, based in Cambridge, MA. We offer a wide range of fiber Bragg grating products: FBG sensors, FBG interrogators, and multiplexers, distributed temperature sensing systems, as well as our own cutting-edge customized fiber optic Bragg grating product line and fiber Bragg grating sensor systems. Our core value is to create unique and innovative technologies that bring the most value to our customers. We are an international team of scientists, engineers, and managers who are experienced in the field of fiber optics and are passionate about developing new technologies. We are continually expanding, offering exciting opportunities to talented people. You can look forward to working with highly skilled professionals who have significant experience in fiber optic technology development and production. People are our greatest asset. We invest heavily in every employee and provide a personal approach to all our workers. Reference : Sales engineer jobs Apply from JobRealtime.com http://jobrealtime.com/job/4012/sales-engineer-at-jobisite/

[fmcaldas]

[Full time] Sales engineer at Jobisite

We are looking for a sales engineer who is experienced in the fiber optic field to provide technical support and advice on a range of products and perform technical sales. Job requirements: - 25 to 45 years old; - Education in engineering, applied science, or physics; - Experience in a field of fiber optics, fiber optic sensor installation or DTS system installation; - Able to travel around the USA to attend trade shows and conferences; - Fluent English (knowledge of Spanish and French is desirable); - Good presentation skills; - Analytical and problem-solving skills; - The ability to build relationships with clients quickly; - Based in the Northeastern United States. Job duties and responsibilities: - Working with clients; Search for new clients, managing and interpreting customer requirements; persuade clients that a product or service will best satisfy their needs; develop long-term relationships with clients, through managing and interpreting their requirements. - Presenting the technology & Marketing; Provide pre-sales technical assistance and product education; support marketing activities by attending trade shows, conferences, and other marketing events; make technical presentations and demonstrate how a product meets client needs; prepare reports for head office and keep customer records. - Working with the equipment; Work on after-sales support services and provide technical back up as required; help in the design of custom-made products; determine improvements by analyzing cost-benefit ratios of equipment, supplies, or service applications in a customer environment. This position is part-time at the moment, but we offer an ability to work full time later on. Salary: $50.000-60.000/year How to apply Please contact Miss Lisa Kucherova at lisa.kucherova @ optromix.com to apply. Make sure to include a CV with your application. About us Optromix, Inc. is a U.S. manufacturer of innovative fiber optic products for global market, based in Cambridge, MA. We offer a wide range of fiber Bragg grating products: FBG sensors, FBG interrogators, and multiplexers, distributed temperature sensing systems, as well as our own cutting-edge customized fiber optic Bragg grating product line and fiber Bragg grating sensor systems. Our core value is to create unique and innovative technologies that bring the most value to our customers. We are an international team of scientists, engineers, and managers who are experienced in the field of fiber optics and are passionate about developing new technologies. We are continually expanding, offering exciting opportunities to talented people. You can look forward to working with highly skilled professionals who have significant experience in fiber optic technology development and production. People are our greatest asset. We invest heavily in every employee and provide a personal approach to all our workers. Reference : Sales engineer jobs Apply Source: http://qoholic.com/job/4121/sales-engineer-at-jobisite/

[optromix]

Distributed temperature sensors promote warning systems

If you are interested in DTS systems and want to learn more, please contact us at info@optromix.com

Temperature is a key safety indicator in any industry. The technology of distributed temperature sensors using optical fiber allows measuring the temperature at any point in the fiber, with an interval of 1 meter, resulting in the detailed temperature dependence of all required areas. The data obtained by this technique makes it possible to develop intelligent warning systems based on it, therefore, replacing outdated point-based monitoring systems.

The optical fiber itself acts like a fiber optic sensor, and the distributed nature of the DTS technology enables us to determine the temperature change at an arbitrary point, spreading many kilometers from it. Moreover, the measurement quality is not affected by electromagnetic radiation, thus, the distributed temperature technology is free from false alarms.

To be more precise, distributed temperature sensors (DTS) allow measuring the characteristics of an object along a fiber optic cable, while the fiber cable is a linear sensor, which is a continuously distributed sensing element throughout its entire length.

The operating principle is based on the reflectivity of stimulated Raman scattering of light (Raman effect). A semiconductor laser is also used to determine the location of temperature changes in a fiber optic cable. The fact is that the structure of the optical fiber changes when the temperature changes. 

When laser beam light from the laser system enters the area of temperature change, it interacts with the changed structure of the optical fiber and in addition to direct light scattering, reflected light appears.

The main advantages of fiber optic sensors in comparison with classical analogs are the following:

• Compact size;

• Very fast response to parameter changes in the environment;

• Low weight;

• Multiple parameters can be registered simultaneously by a single distributed sensor;

• Reliability;

• Very wide operating temperature range of DTS;

• Small price per unit length of the sensing system;

• High sensitivity;

• Long operating time;

• The high spatial resolution of temperature sensors;

• Resistance to chemicals and aggressive environments;

• DTS is not affected by electromagnetic disturbances;

• The sensitive part of the fiber sensor does not require connection to power lines.

The processing unit measures the propagation speed and power of both direct and reflected light and determines where the temperature changes. For instance, at a wavelength of 1550 nm, a pulsed generation mode is used with a laser power limit of 10 mW.

There are several types of optical fibers, each of which meets certain requirements for its properties, depending on the application due to the fact that the properties of the optical fiber can be varied over a wide range. 

Physical effects on the optical fiber, such as pressure, deformation, temperature change, affect the properties of the fiber at the point of exposure and it is possible to measure the environmental parameters by measuring the change in the properties of the fiber at a given point.

In general, a fiber optic sensor consists of two concentric layers: fiber core and optical coating. The fiber optic light guide part can be protected by a layer of acrylate, plastic, reinforced sheath, etc., depending on the application of this fiber cable.

Thus, distributed fiber optic sensors are perfect for industries related to combustible and explosive materials, such as coal, oil and gas production, etc. for use in fire alarm systems of various structures.

Application of distributed temperature sensors includes:

• fire alarm systems in the road, rail or service tunnels;

• thermal monitoring of power cables and overhead transmission lines to optimize production processes;

• improving the efficiency of oil and gas wells;

• ensuring the safe working condition of industrial induction melting furnaces;

• monitoring the tightness of containers with liquefied natural gas on ships in unloading terminals;

• detection of leaks in dams;

• temperature control in chemical processes;

• leak detection in pipelines.

In addition, DTS systems combined with other tools open completely new areas of application. For example, it is possible to design a specialized device - a fire detector based on a distributed fiber optic temperature sensor.

Detecting a fire in an industrial environment is not an easy task because of the large number of disturbing factors, many of which can be considered by detectors as carriers of fire signs. In addition, dust deposited on the DTS' sensitive elements makes it difficult to operate and it can disable them.

It is also necessary to take into account the possible smoldering of the deposited dust, which can also lead to false alarms. The presence of fumes and aerosols makes it impossible to operate smoke optical-electronic fire detectors. The presence of carbon monoxide will trigger gas fire detectors.

Industrial facilities and production are characterized by large volumes of premises, high ceilings, the presence of long tunnels, collectors, mines, inaccessible areas and premises with a complex configuration and geometry. And in these conditions, it is certainly possible to protect using traditional fire alarm systems, but this involves the use of a large number of detectors, and therefore they have high costs, including installation and maintenance of alarm systems and automation.

It is difficult to select detectors for explosive zones, especially for use in underground operations and mines. Aggressive media are often present in chemical industries. There are also objects of sea and river transport, characterized by the aggressive salt fog.

The use of non-electric sensing devices, the use of fiber optic cable allows the DTS to be applied in enterprises of the oil and gas complex, mines, underground operations, chemical industries (including those with aggressive environments), and metallurgy and energy enterprises.

As for oil companies, the active development of high-viscosity oil fields, which imposes strict requirements on the production equipment, and the severe depletion of most oil and gas fields require mining organizations to conduct prospecting and exploration operations, change production technologies and control the technical condition of wells.

The main task for mining companies to increase the well's production capacity in real-time is to track information about the processes occurring in wells and fields. Solutions based on standard temperature sensors suggest well logging using point measuring instruments, which leads to the inaccuracy of the data obtained. 

The disadvantages of such sensing devices include the inability to fix the distribution of one of the most important parameters of the well – the temperature profile in real-time, as well as the need for power supply, the impact on the measurement results of external electromagnetic fields, labor and time costs required for the departure of the team and performing various operations, including the immersion of the fiber sensor element and its movement along the well, data processing, etc.

The fiber optic sensing system consists of distributed temperature sensors designed to measure temperature along the borehole, and point-to-point fiber pressure sensor. Optical fibers of a distributed temperature sensing system and pressure sensors can be structurally installed in a single fiber cable.

The fiber optic cable is resistant to mechanical damage. Additional fiber optic cable protection is not required during descent and lifting operations, but the protection of the fiber cable from mechanical damage during descent and lifting operations can be provided by the use of protective coatings.

If you want to obtain a highly efficient distributed temperature sensing system, you should choose the Optromix company. Optromix is a manufacturer of innovative fiber optic products for the global market. The company provides the most technologically advanced fiber optic solutions for monitoring worldwide. Optromix is a fast-growing vendor of fiber Bragg grating (FBG) products line such as fiber Bragg grating sensors, FBG interrogators and multiplexers, distributed acoustic sensing (DAS) systems, distributed temperature sensing (DTS) systems. 

Distributed temperature system provides continuous underground power lines monitoring of temperatures, detecting hot spots, delivering operational status, condition assessment, and power circuit rating data. This helps operators to optimize the transmission and distribution networks, and reduce the cost of operation and capital.

Usually, the DTS systems can detect the temperature to a spatial resolution of 1 m with precision to within ±1°C at a resolution of 0.01°C. Measurement distances of greater than 30 km can be monitored and some specialized systems can provide even tighter spatial resolutions. The advantages of working with Optromix:

Our DTS system has the superior quality, however, its price is one of the lowest in the market;

Optromix is ready to develop DTS systems based on customer’s specifications.