Temperature Coefficient of Fiber Bragg Grating (FBG) sensor- Factory Calibration Function for 300°C FBG thermometer

  • DCYS is a professional 300°C FBG temperature sensor manufacturer, providing 300°C FBG temperature sensor calibration method, calibration experiment, test report, temperature coefficient, calibration function and other information; 300°C fiber bragg grating temperature sensor brand is "OFSCN".

OFSCN® 300°C Capillary Seamless Steel Tube Fiber Bragg Grating Temperature Sensors (FBG Thermometers) produced by DCYS undergo calibration before leaving the factory, and the basic temperature coefficients (also known as calibration coefficients or calibration functions) for the fiber bragg grating sensors are provided along with the product. Here is a brief explanation of the calibration for this product:

Table of Contents:

1. Product Structure of 300°C Fiber Bragg Grating Temperature Sensor

2. Factory Test Report for 300°C Fiber Bragg Grating Temperature Sensor - Calibration Temperature Coefficients

1. Product Structure of OFSCN® 300°C Capillary Seamless Steel Tube Fiber Bragg Grating Temperature Sensor:

OFSCN® 300°C Capillary Seamless Steel Tube Fiber Bragg Grating Temperature Sensors (FBG Thermometers) are protected by a full-metal encapsulation to safeguard the fiber bragg grating (FBG). The standard product has a diameter of 0.9 millimeters, and the overall structure and the product itself are shown in Figure 1, 2, and 3:

Physical Diagram of OFSCN® 300℃ Capillary Seamless Steel Tube FBG Temperature/ Strain/Stress Sensor (Part of it)

Figure 1

Physical Diagram of OFSCN® 300℃ Capillary Seamless Steel Tube FBG Temperature Sensor Main Structure of OFSCN® 300℃ Capillary Seamless Steel Tube FBG Senso

Figure 2

Figure 3


The connectors and tail ends are illustrated in Figures 4 and 5:

Fiber Connector of OFSCN® 300℃ Capillary Seamless Steel Tube FBG Sensor Tail end of OFSCN® 300℃ Capillary Seamless Steel Tube FBG Sensor

Figure 4

Figure 5

Due to the unique stainless steel seamless tube patented packaging technology used in OFSCN® 300°C Capillary Seamless Steel Tube Fiber Bragg Grating Temperature Sensors (FBG Thermometers), combined with our special process treatment, they possess characteristics such as high sensitivity, fast heat conduction, excellent accuracy, compact size, light weight, high tensile and compressive strength, high-temperature resistance, waterproof and moisture-proof capabilities, non-combustibility, and corrosion resistance.

2. Factory Test Report for OFSCN® 300°C Capillay Seamless Steel Tube Fiber Bragg Grating Temperature Sensor - Calibration Coefficient Graph:

High accuracy is the lifeline of DCYS's products, and this characteristic is verified through the test reports of each sensor we produce, as shown in the following figure:

Calibration Diagram of Wavelength and Temperature of OFSCN® 800°C Capillary Seamless Steel Tube FBG Temperature Sensor

Figure 6


Figure 6 shows the measured graph of the calibration coefficient (calibration function) of an actual sold OFSCN® 300°C Capillary Seamless Steel Tube Fiber Bragg Grating Temperature Sensor (FBG Thermometer). This curve displays the corresponding relationship between the sensor's wavelength variation and temperature change. The calibration range is from room temperature to 300°C, with a calibration temperature interval of approximately 20°C.

Unlike the legend, in the formal factory report, we also provide specific wavelength values and temperature values. For general temperature measurements, this calibration coefficient can be directly used.

Each OFSCN® 300°C Capillary Seamless Steel Tube Fiber Bragg Grating Temperature Sensor has a unique calibration coefficient (calibration function), which is tested and determined by the Quality Inspection Department of DCYS. It is recorded on the company's official website for customers to query at any time. Based on our experience, the R-square value of the binomial function is generally above 0.9995.

Our philosophy is: "OFSCN®, make optical fiber stronger!"

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