AST / ST
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| [Brand | AST / ST |
|---|---|
| Origin | Shanghai, China |
| Model | DM1200 |
| Excitation Source | Low-power micro-focus X-ray tube (≤10 kV, ≤0.5 mA, ≤5 W) |
| Detector | Thin beryllium-window gas-flow proportional counter |
| Measurement Time | 1–999 s (default 30 s) |
| Elements Quantified | CaO, Fe₂O₃ (simultaneously) |
| Accuracy | σ(CaO) ≤ 0.09 wt%, σ(Fe₂O₃) ≤ 0.05 wt% |
| Sample Form | Solid pellets (powder pressed into discs) |
| Compliance | GB/T 176–2017, JC/T 1085–2008, JB/T 11145–2011 |
| Display | 7-inch color capacitive touchscreen |
| Data Storage | Internal non-volatile memory with power-loss retention |
| Interface | RS-232/USB for PC connectivity |
| Dimensions | 470 × 365 × 130 mm (W×D×H) |
| Weight | 15 kg] |
| Brand | AST / ST |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | PRC |
| Model | DM5200 |
| Instrument Type | Radiation Dose Rate Meter |
| Measurement Range | 0.01–200 µSv/h |
| Energy Response | 0.048–3.00 MeV (≤±20% relative to ¹³⁷Cs) |
| Basic Relative Error | ≤±10% |
| Repeatability | ≤5% RSD per single measurement |
| Accuracy (95% confidence, 15 s integration) | ≤±10% |
| Alarm Thresholds | 0.25, 2.5, 10, 20 µSv/h (user-selectable) |
| Integration Time | 1–60 s (adjustable in 1 s increments) |
| Operating Temperature | −10 °C to +40 °C |
| Relative Humidity | ≤95% RH (non-condensing) |
| Power Supply | Two 1.5 V D-cell batteries |
| Power Consumption | ≤150 mW |
| Dimensions | 330 × 230 × 90 mm |
| Weight | 1.5 kg |
| Detector | NaI(Tl) scintillation crystal |
| Display | Dot-matrix LCD with Chinese UI |
| Interface | Touch-sensitive keypad |
| Units | µSv/h (default), selectable µR/h |
| Battery Monitoring | Real-time voltage monitoring with low-battery alert |
| Brand | AST ST |
|---|---|
| Model | DM1240 |
| Technology | Energy-Dispersive X-Ray Fluorescence (EDXRF) |
| Excitation Source | Low-power micro-focus X-ray tube (≤10 kV, ≤0.5 mA, ≤5 W) |
| Detector | Ultra-thin beryllium-window proportional counter |
| Measurement Time | 1–999 s (default 60 s) |
| Accuracy | SO₃ ≤ ±0.05 wt%, CaO ≤ ±0.09 wt%, Fe₂O₃ ≤ ±0.05 wt% |
| Sample Form | Solid pellets (powder pressed into 32 mm diameter discs) |
| Compliance | GB/T 176–2017, JC/T 1085–2008, JB/T 11145–2011 |
| Dimensions | 470 × 365 × 130 mm (W×D×H) |
| Weight | 15 kg |
| Operating Environment | 5–40 °C, ≤85% RH (at 30 °C), 220 V ±20 V, 50 Hz, ≤50 W |
| Radiation Class | Exempt device per Chinese regulatory requirements (no shielding enclosure required) |