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| Brand | Huake Instrument |
|---|---|
| Origin | Beijing, China |
| Model | HK-3C |
| Instrument Type | Benchtop |
| Parameter Type | Single-parameter (pH) |
| Measurement Range | 0.00–14.00 pH |
| Resolution | 0.01 pH |
| Accuracy | ±0.02 pH |
| Calibration Solutions | GB/T 604–2002 compliant standard buffers (pH 4.00, 6.86, 9.18 at 25 °C) |
| Temperature Compensation | Automatic or manual (0.1–60.0 °C) |
| Input Impedance | ≥1 × 10¹² Ω |
| Response Time (T₉₀) | ≤60 s at 25 °C |
| Display | 192 × 64 dot-matrix LCD (switchable Chinese/English) |
| Power Supply | AC 100–240 V, 50–60 Hz |
| Power Consumption | 3 W |
| Dimensions | 270 × 200 × 65 mm (L × W × H) |
| Weight | 1.5 kg |
| Brand | Huake Instrument |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | HK-307 |
| Detection Parameters | Single-parameter (Conductivity/TDS/Resistivity/Salinity/Temperature) |
| Form Factor | Benchtop |
| Conductivity Range | (0.00–20.00) µS/cm |
| TDS Range | 0–100 g/L |
| Resistivity Range | 0–100 MΩ·cm |
| Salinity Range | 0–100 ppt |
| Temperature Range | (0.0–99.9) °C |
| Accuracy | ±1.5% FS |
| Minimum Resolution | 0.001 µS/cm |
| Display | 192 × 64 dot-matrix LCD (English/Chinese switchable) |
| Temperature Sensor | Pt1000 |
| Temp. Compensation | Automatic or Manual (0.1–60.0 °C, reference 25 °C, coefficient 0.00–9.99 %/°C) |
| Response Time (T90) | 30 s at 25 °C |
| Operating Ambient | 5–45 °C, ≤90% RH (non-condensing) |
| Power Supply | AC 100–240 V, 50–60 Hz |
| Power Consumption | 3 W |
| Dimensions | 270 × 200 × 65 mm (L×W×H) |
| Weight | 2 kg |
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