Single wavelength X-ray fluorescence total sulfur analyzerIt is an advanced analytical instrument based on the principle of X-ray fluorescence, and its technical characteristics are mainly reflected in the following aspects:
1、 Core detection technology: single wavelength selective excitation
Principle advantages
The instrument generates high-energy X-rays through an X-ray tube, which irradiate the sample and excite sulfur atoms into excited states. When sulfur atoms return to the ground state, they emit X-ray fluorescence of a specific wavelength. Single wavelength technology captures only a single wavelength corresponding to the characteristic fluorescence of sulfur elements (such as K α rays, wavelength 0.5373 nm) through a crystal grating spectroscopic system, avoiding interference from other elements (such as chlorine and silicon) and significantly improving measurement accuracy.
Sensitivity and accuracy
The detection limit can reach 0.1 ppm (some models such as Sindie Online can even reach as low as 0.6 ppm), and the repeatability is better than ± 0.1 mg/kg, meeting the National V and VI sulfur content detection standards for gasoline and diesel (such as ASTM D7039, SH/T 0842).
2、 Optical System and Hardware Design
Spectral technology
Using hyperbolic curved crystal optical elements or multi crystal automatic conversion systems to achieve the focusing and separation of monochromatic X-rays. For example, XOS's Sindie Online model uses two bent crystal elements to excite monochromatic beams and collect sulfur characteristic fluorescence, reducing background noise.
X-ray source and detector
Equipped with low-power X-ray tubes (such as 50 kV-4 mA, 200 W), combined with ultra-thin beryllium window proportional counter tubes or imported color filters, to ensure signal stability. The detector can automatically adjust the high voltage to correct performance degradation and maintain long-term accuracy.
Explosion proof and Industrial Design
Industrial grade models support floor or wall mounting and comply with ATEX/NEC explosion-proof ratings. The analyzer has no moving parts inside, reducing the risk of mechanical failure and requiring extremely low maintenance.
3、 Intelligence and operational convenience
Software features
Full Chinese interface, supporting qualitative, quantitative, and approximate quantitative analysis without standard samples.
Built in calibration curve library (can store 10-16 calibration curves), automatically selects the working curve upon startup, without the need for manual intervention.
Large data storage capacity (such as 4096 analysis results, 8192 count data), supporting RS-232 serial port or WiFi remote transmission.
Automation and Efficiency
Standard 12 bit automatic sampler, capable of completing a single test in 30-300 seconds, supporting 1-10 repeated measurements and outputting the average value.
Sample processing is simple, only 2 mL of sample needs to be injected into a disposable Mylar membrane sample cup to avoid cross contamination.
environmental adaptability
The working temperature range is 10-45 ° C (some models are 5-35 ° C), and the humidity is ≤ 85%, suitable for laboratory and industrial site environments.