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| After-sales Service: | Following Updating |
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| Warranty: | Under Discussion |
| Weight: | 2kg |
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| 1.Suitable for pH determination of pure water with conductivity less than 10μs/cm; |
| 2.Chinese interface, easy to operate, screen with backlight function, easy to read; |
| 3.Supporting two modes such as pure water and ammonia-containing water, automatically matching the required potential point and temperature compensation settings; |
| 4.Support static calibration and dynamic calibration, and automatic temperature compensation; |
| 5.Support automatic upper and lower limit alarm function and power failure protection function; |
| 6. With (4~20) mA DC isolated signal output, can set its corresponding pH value output upper limit and output lower limit; |
| 7.With RS-232 or RS-485 output interface (2 choose 1). |
| Model | PHG-7685A | |
| Measuring range | pH | (0.00~14.00)pH |
| Temperature | (-10.0~120.0)°C | |
| Resolution | pH | 0.01pH |
| Temperature | 0.1ºC | |
| Instrument basic error | pH | ±0.05pH ±1 character |
| Temperature | ±0.5ºC (0.0ºC≤T≤60.0ºC); ±1.0ºC (others) | |
| Instrument repeatability | 0.02pH | |
| Basic error of electronic unit | pH | ±0.03pH ±1 word |
| Temperature | ±0.3°C | |
| Stability of electronic unit | Not more than ±0.02pH/24h | |
| Input impedance of electronic unit | Not less than 1×1012Ω | |
| Electronic unit input current | Not more than 2×10-12A | |
| Instrument protection grade | IP65 | |
| Power supply | AC:(220±22)V,(50 ±0.5)Hz | |
| Dimensions (mm), weight (kg) | Measuring unit: 628×288×224, 5 | |
| Electronic unit: 144×144×150, 2 | ||
| Opening size (mm) | Measuring unit: 600x260 | |
| Electronic unit: 138x138 | ||
| Inlet water flow rate | 60mL/min | |
| Inlet pipe diameter/drainage pipe diameter | Water inlet: Φ6 Drainage: Φ10 |
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