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Breaking Through National Standards with Precise Temperature Measurement: How Does Xifei TempVision Redefine the New Benchmark for Boiler Flame Temperature Detection?
In the operation and management of coal-fired boilers, precise flame temperature detection is a critical technical approach for ensuring combustion efficiency, controlling pollutant emissions, and enhancing operational safety. In August 2025, China released… GB/T 46084—2025 Technical Specification for Image-Based Flame Temperature Detection in Coal-Fired Boilers , providing unified technical guidance for the industry. As a leader in the field of flame detection, Xifei Company’s independently developed… TempVision Flame Temperature Imaging Detection System Not only does it fully comply with national standards, but it has also achieved breakthroughs in multiple core technical indicators, driving the industry toward higher precision, greater adaptability, and improved cost-effectiveness.
Today, let’s start with… Six Core Technical Dimensions By comparing national standard requirements with TempVision’s actual capabilities, let’s see how we can create real value for users that goes beyond the standards.
National Standard Requirements (4.1) : Utilizing a visible light band (380 nm–780 nm)… RGB single sensor Imaging: Assuming the flame is a gray body, establish the relationship between RGB signals and temperature through calibration.
TempVision Breakthrough : Adopt RGB + Near-Infrared Mono Dual Independent Sensor Fusion Architecture On the basis of covering visible light, Extended near-infrared response. …not only enhances the system’s sensitivity to radiation, but more importantly, Broke the limitations of the “gray body assumption.” For coal powder flames, whose radiative properties vary with wavelength… Non-gray body objects TempVision can acquire richer spectral information, enabling temperature retrieval that more closely approximates real combustion physics, resulting in more accurate measurements and greater adaptability.
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National standard requirements (4.3.1) The resolution of the captured flame images shall not be lower than… 320 pixels × 240 pixels 。
TempVision Breakthrough : The system comes standard with an image resolution of up to 1024×768 pixels , which is the minimum requirement stipulated by national standards. 8 times or more Higher resolution means being able to capture finer flame structures, temperature gradients, and pulsation characteristics, providing an unprecedentedly clear “view” for combustion optimization diagnostics and localized hot-spot monitoring, truly achieving a leap from “being able to see” to “seeing clearly and accurately.”
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Installation adaptability: Long-range observation, flexible deployment
National Standard Recommendation (6.1.1) The front end of the detector should be isolated from the burner nozzle cross-section. Not less than 50 mm Other locations require anti-fouling and anti-burn measures.
TempVision Breakthrough Thanks to the remote imaging capability of image fibers, the detector… The probe can be located away from high-temperature areas. , the detection distance can reach up to 3800 mm This not only greatly… Enhanced the device’s survivability and service life in harsh furnace environments. Moreover, it enables the system to easily adapt to various burner configurations specified in Appendix C of the national standard (such as swirl and straight-flow types), significantly enhancing installation flexibility.
Calibration Range: Expand the Upper Limit to Cope with Extremes
National Standard Recommendation (7.1.2) The calibration temperature should not exceed 1800 ℃ 。
TempVision Breakthrough : Calibrated using high‑standard blackbody radiation sources, with the calibration temperature range extended to… 850℃ - 1900℃ A wider high-temperature calibration range ensures that the system can still provide… Reliable and accurate measurement data , adding an extra layer of safety for operational security.
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Calibration Accuracy: Strive for perfection—halve the margin of error.
National standard requirements (7.2.2) The relative temperature error during the calibration process should… No more than 5%.
TempVision Internal Control Standards : Raise the calibration accuracy requirements to Relative Error ≤1% This means that from the very source of the measurement chain—the calibration stage—TempVision has already established… A precision benchmark far exceeding industry standards. , laying a solid foundation for high-precision on-site temperature measurement.
Temperature Inversion Algorithm: True Dual-Color Method, Pixel-Level Alignment
National Standard Method (8.2.4) : Prioritize the use of the two-color method (colorimetric method), that is, from The same RGB sensor In the image, Select any two color channels (such as R and G). the signal ratio to calculate temperature. Under this method, the two signals involved in the ratio come from Spectral response of different physical spaces However, at its core, it is still single-sensor information processing.
TempVision Breakthrough : Adopt a basis of True Dual-Color Method with Dual Independent Physical Sensors Through RGB Sensor and Near-Infrared Mono Sensor Collaborative work can be done in Achieve a one-to-one precise correspondence of pixels in physical space. and select the radiation intensities of two bands (such as near-infrared and red light) for colorimetric temperature measurement. This method offers spatial… Higher matching accuracy , it is less affected by the non-gray characteristics of flames and particle interference, features a more rigorous theoretical model, and yields a more accurate temperature field. Superior spatial consistency and accuracy. 。
Going beyond mere compliance—dedicated to surpassing expectations.
National standards define the industry’s entry barriers, while Xifei TempVision represents the cutting-edge technology and engineering practices currently leading the field of flame image-based temperature measurement. Through our… Sensing mechanisms, core hardware, system design, algorithmic models End-to-end innovation not only meets and surpasses national standards across all metrics, but also… It truly addresses the core pain points users face in areas such as high‑precision measurement, highly reliable operation, and low maintenance costs. 。
Choosing TempVision is not just selecting a detection system—it’s choosing a deeper understanding of the combustion process, stronger assurance of operational safety, and a pursuit of superior economic benefits.
Xifei TempVision — Define new standards for flame temperature detection, empowering a smart and low-carbon future for boilers.
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021-64425576
info@safe-fire.com.cn
www.safe-fire.com.cn
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