ASTRO / ST
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| Brand | ASTRO / ST |
|---|---|
| Origin | Shanghai, China |
| Model | DM1262 |
| Detection Method | Total Sulfur (S) by Energy-Dispersive X-ray Fluorescence (EDXRF) |
| Detection Limit (300 s, air atmosphere) | 2.6 ppm |
| Weight (incl. battery & thermal printer) | 5.6 kg |
| Measurement Range | 3×DL to 9.99 wt% S |
| Linearity Coefficient (r) | >0.999 across low/mid/high calibration ranges |
| Repeatability (r) & Reproducibility (R) | Compliant with GB/T 17040–2019, GB 17411, and ASTM D4294 |
| Operating Temperature | −10 °C to +40 °C |
| Relative Humidity | ≤95% at 35 °C |
| Power Supply | 11.1 V / 20.8 Ah Li-ion battery (≥5 h continuous operation) |
| Dimensions | 242 mm (W) × 258 mm (D) × 142 mm (H) |
| X-ray Tube | ≤10 kV, ≤1 mA, ≤10 W |
| Detector | Low-background ultra-thin Be-window proportional counter with secondary filtration |
| Pulse Processing | FPGA- and DSP-based digital multi-channel analyzer (MCA) with reduced dead time |
| Software | Embedded touchscreen OS with automatic C/H ratio correction, matrix effect compensation, and multi-range calibration curve switching |
| Regulatory Compliance | Meets radiation safety exemption criteria per CNPC and IAEA guidelines |