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| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PHG-21C, PHG-21D |
| Price | ¥2600 |
| pH Range | (0.00–14.00) pH |
| ORP Range | (−1800–+1800) mV |
| Temperature Range | (−10.0–120.0) °C |
| Resolution | 0.01 pH / 1 mV / 0.1 °C |
| Accuracy | ±0.05 pH / ±10 mV / ±1 °C |
| Repeatability | ≤0.02 pH / 3 mV |
| Electronic Unit Error | ±0.03 pH ±1 digit / ±1 mV ±1 digit / ±0.3 °C |
| Stability | ≤±0.02 pH/24 h |
| Input Impedance | ≥1×10¹² Ω |
| Input Current | ≤2×10⁻¹² A |
| Enclosure Rating | IP65 |
| Power Supply | AC (220±22) V, (50±1) Hz or DC 24 V |
| Dimensions | 144×144×163 mm |
| Weight | 2.5 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PHG-217C, PHG-217D |
| Price Range | USD 850–1,420 (FOB Shanghai) |
| pH Range | 0.00–14.00 pH |
| ORP Range | −1800 to +1800 mV |
| Temperature Range | −10.0 to 120.0 °C |
| pH Resolution | 0.01 pH |
| ORP Resolution | 1 mV |
| Temperature Resolution | 0.1 °C |
| pH Accuracy | ±0.05 pH ±1 digit |
| ORP Accuracy | ±10 mV |
| Temperature Accuracy | ±1.0 °C |
| Electronic Unit pH Accuracy | ±0.03 pH ±1 digit |
| Electronic Unit Stability | ≤±0.02 pH/24 h |
| Input Impedance | ≥1 × 10¹² Ω |
| Input Current | ≤2 × 10⁻¹² A |
| Output | Isolated 4–20 mA DC (configurable span), RS-232 or RS-485 (user-selectable), 4 programmable relay outputs |
| Data Storage | 400 records with configurable logging interval |
| Auto Calibration | Recognizes pH 4.00, 6.86, and 9.18 buffers |
| ATC | Automatic temperature compensation via integrated Pt1000 or external RTD |
| Enclosure Rating | IP65 |
| Power Supply | AC 220 V ±10 %, 50 Hz ±1 % |
| Dimensions (W×H×D) | 144 mm × 144 mm × 163 mm |
| Weight | 2.5 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PHG-7685A |
| Price Range | USD 1,400 – 4,200 (FOB) |
| Measurement Range | (0.00–14.00) pH |
| Resolution | 0.01 pH |
| Accuracy | ±0.05 pH ±1 digit |
| Dimensions | 628 × 288 × 224 mm |
| Weight | 10 kg |
| Temperature Range | −10.0 to 120.0 °C |
| Temp. Resolution | 0.1 °C |
| Temp. Accuracy | ±0.5 °C (0.0–60.0 °C), ±1.0 °C (other) |
| Repeatability | 0.02 pH |
| Electronic Unit Accuracy | ±0.03 pH ±1 digit |
| Drift Stability | ≤±0.02 pH / 24 h |
| Input Impedance | ≥1 × 10¹² Ω |
| Input Current | ≤2 × 10⁻¹² A |
| Enclosure Rating | IP65 |
| Power Supply | AC (220 ± 22) V, (50 ± 0.5) Hz |
| Output | Isolated 4–20 mA DC (configurable pH span), RS-232 or RS-485 (user-selectable) |
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