I Fiber Temperature Sensor

TEMPSENS Business areas 2021 CABLES HEATING SOLUTIONS TEMPERATURE SENSORS

YEARS EXPERIENCE GLOBAL LOCATIONS PATENTS APPLIED

Key Products – Temperature sensors

Key Products – Heating systems KEy Products

FIBER OPTICS SENSOR Fiber Optic Temperature Measurement Fluorescence lFiber Bragg, Raman Distributed Based Grating (FBG) Thermometry

FIBER OPTICS SENSOR ■ Insensitive to Electric Current, Electromagnetic Radiations such as Microwaves and RFI. ■ Technology offers multipoint, and distributed temperature measurement. ■ Robust and offers an alternative way to conventional temperature measurement techniques.

FIBER OPTICS SENSOR

— Fluorescence Based

■ It is a single point contact temperature measurement system. ■ A Fluorescent sensor is formed at the tip of the Optical Fiber. ■ The other end of the fiber is attached to a light source . The light source is used to excite the Fluorescent material. ■ After excitation, the Fluorescent material tends to return to its ground state by emitting a photon (light). ■ The time taken to return to ground state varies according to temperature. @senz FIBER OPTICS SENSOR V OpIk Cwi'iKt* Omgi ITR tfiMV*. i i*vrt HmK pomr tO LSivtml Probe HotSpot

Working Principle

Applications I" Transformer Winding Temperature Measurement ■ Switchgear Hot Spot Temperature Monitoring ■ Energy Industry ■ Industrial Microwave Industry ■ Medical Industry

Why Monitoring required ? The operational life of Transformer will be decreased by HALF when its inner temp. increases every 6°C.

FIBER OPTICS SENSOR

TQ-E116Transformer Winding Hot Spot Temperature Monitoring Temperature Range

TQ-E116 ComponentsFluoroSenz Probe TP1 FluoroSenz Probe TP2 Temperature Range Temperature Range

senz FluoroSenz Probe TP3 FluoroSenz Probe TP4 Temperature Range Temperature Range

Installation Diagram

Installation Diagram

Other Models TQ-12 for Switchgear Busbar

Advantages ▪ Highly stable, with great degree of accuracy, calibration-free, interchangeability. ▪ Immune to EMI, Microwaves. ▪ Accurate and Reliable Temperature Reading where Thermocouple and RTD's cannot be used. ▪ Long service life, maintenance-free. ▪ Small Probe size and can be used to measure the hot spot in depth.

Fiber Bragg Grating(FBG) “ Temperature Sensor

A fiber Bragg grating is an optical sensor made by laterally exposing a core of single mode fiber to periodic pattern of intense UV laser light. The exposure forms an increase in the refractive index of fiber’s core creating fixed index modulation known as grating. The grating inside core of fiber optic shall reflect particular wavelength of laser, correlating to grating period and transmits all other. When period of grating expands or shrinks due to change in temperature/strain, change in reflected wavelength is observ

senz FIBER OPTICS SENSOR Technology 2 A Fiber Bragg Grating (FBG) is a type of Distributed reflector that reflects a particular wavelength of light and transmits all other . This is done by adding a periodic variation to the refractive index of the fiber core When temperature/strain around Grating changes , change in reflected wavelength is observed.

One of the main advantages of this technology is its iiiiintrinsic multiplexing capability. In fact, hundreds of iiiifiber Bragg gratings can be written on a single optical iiiifiber Low loss relative to the fiber length Small size and Weight Immunity to electromagnetic and radio frequency iiiiinterference Intrinsically safe operation in High sensitivity and long-term reliab

braggSENZ System Configuration Parameter

Sensor CablesTemperature Sensor Cable Strain Sensor Cable Parameter

▪ Hydro Power Plant Monitoring ▪ Power Transmission and Distribution ▪ Commercial Transportatio

FIBER OPTICS SENSOR dtSENZRaman Optical Fiber Distributed Temperature Sensor

dtSENZ TechnologyRaman Effect - An optical laser pulse propagating through the fiber gets scattered light back to the transmitting end, where it is analyzed. Their occurs Rayleigh scattering and Raman scattering and Raman signals: Stokes and Anti-stokes indicates the temperature of that point. The position of the temperature reading can thus be ■ ■ determined by measuring the time taken for the ■ ■ backscatter to return to the source.

senz Intrinsically Safe Linear Monitoring

DTSenz System ConfigurationOptical Specifications Electrical Specifications Parameter

Applications  Fire Detection/ Prevention.  Power Transmission Lines.  Oil and Gas Pipelines.  Conveyer Belt Monitoring.  Oil Leakage Detection.  Plant Temperature Monitoring.  Freezer Warehouse.  Batter

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