The Petra series complies with ASTM D4294 and ISO 8754 for sulfur analysis in various hydrocarbon matrices. Petra 4294™ delivers precise sulfur analysis with limits of detection (LOD) as low as 2.6 ppm. Petra MAX™ delivers a sulfur LOD as low as 5.7 ppm with rapid monitoring of critical elements like Ni, V, and Fe at sub-ppm levels.
ASTM D4294, ISO 8754 & IP 336
HDXRF Technology
Petra is powered by High Definition X-ray Fluorescence (HDXRF®) technology: an elemental analysis technique offering significantly enhanced detection performance over traditional XRF technology. This technique applies state-of-the-art monochromate and focusing optics, enabling dramatically higher signal-to-background ratio compared to traditional polychromatic X-ray Fluorescence. Figure 1 shows the basic configuration of HDXRF and its use of focused monochromatic excitation.
ELIMINATE CENTRIFUGE
Interfering elements like Si, Ca, Cl, Fe and water are commonly present in crude oil and will settle to the bottom of a sample over time. These interferences can absorb the X-ray signal and reduce the concentration of sulfur reported. To prevent biased results, many laboratories centrifuge the samples prior to analysis, which increases the amount of processing and time it takes to perform the measurement. Petra’s sample chamber rotates the sample on its side providing a clear measurement window for more accurate results, and eliminating the need to centrifuge.
Measurement Time | 30-900 seconds |
Calibration | 30 calibration curves |
Sample Cup Volume | 7 mL |
Data Output | Printout, USB, and Ethernet to PC connection |
Operating Temperature | +41°F to 104°F (5°C to 40°C) |
Operating Humidity | 30 – 85 % |
Instrument: 403101-01
Standard XRF Sample Cups - Bag of 100: 203688-01
Mylar thin-film: 200335-01
Calibration Standard: 204454-01
