The MESA-7220 is based on the latest advances in Energy Dispersive X-ray Fluorescence (EDXRF) technology. It features diffractive optics for ultra high performance for low atomic elements - specifically S and Cl - in oils and other fluids. This approach is critical for a user to achieve the ultra low noise background for the best limits of detection for S, Cl, and other elements.
The MESA 7220 is a specialized, compact XRF workstation that offers superior measurement of S and Cl in petroleum-based products. MESA 7220 technology is based on the latest tube and detector technologies in Energy Dispersive X-ray Fluorescence (EDXRF) and utilizing closely coupled monochromatic, polarized EDXRF analysis techniques. It was developed specially for HORIBA Scientific Elemental Analyzers Product Line utilizing Olympus field-proven EDXRF technology that originated from on-board oil and fuel analysis specially built for the marine shipping industry.
For additional information on the MESA 7220 from our exclusive distributor, please visit the Horiba website.
The MESA 7220 features a unique, patented design with a close-coupled, doubly curved HOPG X-ray optic. It simultaneously polarizes, focuses, and mono-chromates the X-ray beam. This yields the ideal X-ray source for measuring S, Cl and lower atomic number elements. This technique creates an environment with ultralow background similar to other optics-based X-ray analyzers, but retains the EDXRF benefit of allowing for simultaneous analysis of multiple elements.
Air-cooled, Ag anode x-ray tube; 0-12.5 kV; 0-2 mA
A closely coupled, doubly curved HOPG crystal is used to reflect the Ag La excitation radiation for
optimal excitation of S and Cl resulting in significantly improved analytical performance. The sample
chamber is under vacuum to further enhance sensitivity.
|Si Drift Detector||Stable peek positions and spectral resolution (<165 eV) up to an input count rate of 90,000 cps.|
|Limit of Detection||0.5 ppm wt/wt|
|Dynamic Range||0.5 ppm-10% wt/wt|
|Vacuum Chamber Window||User replaceable 7.5 µm Kapton, protected by an expendable safety window between it and the sample cup window|
|Sample volume||5 mL|
Powerful Pentium processor, embedded WindowsTM XP OS and sealed, field-hardened color touch screen (8.4", 800x600 pixels) capable of clearly displaying calibration curves
Allows users to create calibrations using their own standards methodology for system monitoring and preventative maintenance including onscreen diagnostics for all operating parameters.
|Included Accessories and Options||
Optional Keyboard and Mouse for convenient programming
|Dimensions and Operating Requirements||
Nominal input voltage: 120-240 V +/- 10%AC, 50/60 Hz, 125 W
Dimensions: W x D x H: 330 x 508 x 41 mm (13 x 20 x 16 inches)
Weight: 21 kg (45 lbs)
Ambient operation temperature: -25°C to 40 °C
Relative humidity at 25°C (77°F): 0 to 95%
With U.S. Federal and international regulations becoming increasingly stringent, the need to determine the sulfur content of petroleum oils and fuels is a critical issue. In crude oil, sulfur can be present in concentrations up to 5% by weight. The distalliation of fel products from these crde oils will produce products varying concentrations of sulfur. Hazardous air pollution is caused by sulfur oxides coming from the burning of sulfur containing fuels. In addition, there are harmful effects on engines, when they are being operated with fuels contaiing more sulfur than these permitted levels. it is therefore essential that sulfur concentrations be closely monitored and controlled in all petroleum products.
Energy Dispersive X-ray Fluorescence (EDXRF) is a well established technique for the analysis of sulfur in petroleum products. The analysis requirements for these techniques are established through international standards such as ASTM and ISO. The versatile MESA 7220 can be used in a wide range of applications for sulfur and chlorine in the range of 1 ppm to wt% levels. It automatically corrects for interferences coming from matrix differences or interfering elements.A variety of contemporarty petroleum products are measured with the MESA 7220:
The MESA 7220 performance is compliant with ASTM and ISO International Sulfur Determination Norms:
The MESA 7220 can analyze both S and Cl simultaneously, in addition, measure low levels of chlorine in the presence of high sulfur. This is achieved thru the use of algorithmic software correction for Sulfur.