| pH | Measuring range | -2.000 ~ 19.999pH |
| Resolution | 0.1/0.01/0.001 pH | |
| Accuracy | Electric meter: ± 0.02pH, matching: ± 0.01 pH | |
| Input current | ≤1×10-12 A | |
| Input impendance | ≥ 3×10-12 Ω | |
| Stability | ±0.002 pH/3h | |
| Temp. compensation range | (0 to 100) (automatic or manual) | |
| mV | Measuring range(mV/ORP/EH) | -1999.9mV ~ 0 ~ 1999.9mV |
| Resolution | 0.1mV | |
| Accuracy | ±0.03% FS | |
| Temperature | Measuring range | -10~ 110 |
| Resolution | 0.1 | |
| Accuracy | 5~ 60range:±0.4 other range:±8 | |
| Other Technical Parameters: | Data storage | 600 groups |
| Storage content | Measuring value series number, measuring value, temperature, ATC or MTC state, measuring date and time | |
| Power | DC9V/300mA | |
| Communication connector | RS232 | |
| Size and weight | 160 × 190 × 70mm/880g | |
| Quality and safety certification | ISO9001:2008, CE and CMC | |
| Working Condition | Environment temperature | 15 ~ 30 (0.001grade) |
| Environmental humidity | ≤75% | |
| IP rating | IP54 Dustproof and waterproof |








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