Coefficient of Fiber Bragg Grating (FBG) Temperature Sensor - Calibration Function for 100°C FBG Thermometer - DCYS - ofscn.net

OFSCN® 100-degree Celsius capillary seamless steel tube fiber bragg grating (FBG) temperature sensors (FBG thermometers) produced by DCYS undergo calibration during the manufacturing process. They are accompanied by the basic temperature coefficient (also known as calibration coefficient or calibration function) of the fiber bragg grating sensor. The following is a brief description of the calibration of this product:


This is a companion discussion topic for the original entry at https://www.ofscn.net/fbg-baike/247-temperature-coefficient-100.html

The calibration of the OFSCN® 100°C Fiber Bragg Grating Temperature Sensor is a critical step to ensure measurement accuracy. For this specific model, which is designed for environments ranging from -40°C to +100°C, we typically provide a linear calibration function (monomial).

Technical Principles of Calibration

For the 100°C FBG thermometer, the relationship between the Bragg wavelength shift (\Delta\lambda) and the temperature change (\Delta T) is highly linear. The standard calibration formula is expressed as:

T = k \cdot (\lambda_{current} - \lambda_{initial}) + T_{0}

Where:

  • T: The measured temperature.
  • k: The temperature sensitivity coefficient (expressed in ℃/pm).
  • \lambda_{current}: The real-time wavelength returned by the interrogator.
  • \lambda_{initial}: The central wavelength at the reference temperature T_{0}.

Product Features of OFSCN® 100°C FBG Sensor

Based on the technical standards of DCYS (ofscn), this sensor utilizes a seamless steel tube encapsulation which provides robust protection while maintaining high sensitivity.

  • Standard Diameter: 0.9 mm (customizable down to 0.6 mm).
  • Calibration Range: Room temperature to 100°C.
  • Multiplexing: Up to 20 measurement points can be integrated into a single fiber string when used with a 40nm bandwidth interrogator.

Product Visuals:


For further technical specifications, you may refer to the detailed product page:
OFSCN® 100°C Fiber Bragg Grating Temperature Sensor