How does the software automatically convert picometer (pm) units into Celsius (°C) or microstrain (με)?
The software converts picometer (pm) units into Celsius (°C) or microstrain (με) using pre-calibrated sensitivity coefficients specific to each Fiber Bragg Grating (FBG) sensor.
For temperature measurement, each FBG temperature sensor has a unique calibration coefficient (e.g., pm/°C), which describes how much its Bragg wavelength shifts per degree Celsius of temperature change. The software applies this coefficient to the measured wavelength shift from the sensor to calculate the corresponding temperature.
Similarly, for strain measurement, each FBG strain sensor has a sensitivity coefficient (e.g., pm/με), indicating the wavelength shift per microstrain. The software uses this coefficient to convert the measured wavelength shift into microstrain.
Our OFSCN® Fiber Bragg Grating Interrogator utilizes these pre-programmed calibration formulas to automatically perform these conversions, providing real-time data in engineering units.
Here is a standard image of our interrogator:
