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| Brand | Shimadzu |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Line | HMA-4200 Series |
| Measurement Principles | Colorimetric Spectrophotometry per ISO 11969 / GB/T 7467–1987 (for Cr(VI)), ISO 11045 / GB/T 7475–1987 (for Total Cr, Cu, Ni) |
| Detection Range | 0–2 mg/L (Cr(VI), Total Cr), 0–3.5 mg/L (Total Cu), 0–10 mg/L (Total Ni) |
| Accuracy | ≤±5% FS |
| Repeatability | ≤±5% RSD |
| Linearity Error | ≤±5% FS |
| Span Drift | ≤±5% over 24 h |
| Zero Drift | ≤±3% (Cr(VI), Total Ni), ≤±5% (Total Cu) |
| Minimum Measurement Cycle | 20 min (Cr(VI)), 50 min (Total Cr, Cu, Ni) |
| Calibration Mode | Manual or Automatic (with standard solution dispensing module) |
| Output Interface | RS-232 serial port and isolated 4–20 mA analog output |
| MTBF | ≥1440 h |
| Power Supply | 220 VAC ±10%, 50 Hz ±5% |
| Dimensions (H×W×D) | 1550 × 500 × 420 mm |
| Enclosure Rating | IP54 (indoor installation) |
| Compliance | Designed to support ISO/IEC 17025-compliant QA/QC workflows |
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