The 1pHS-3C Precision pH Meter User Manual provides overview, principles, specifications, measurement procedures, and maintenance guidelines.
This manual describes the 1pHS-3C precision pH meter, a laboratory instrument for accurate pH and ORP (mV) measurements. It explains the instrument’s components, operating principle, and how the pH and reference electrodes form a measurement cell.
The document details measurement ranges, accuracy, power consumption, and environmental limits, then gives step‑by‑step instructions for pH calibration, sample measurement, ORP measurement, and routine maintenance, including electrode care and storage. This manual is written in Chinese.
| pH measurement range | 0‑14 pH |
|---|---|
| mV measurement range | ±0‑1999 mV |
| Minimum pH reading | 0.01 pH |
| Minimum mV reading | 1 mV |
| pH accuracy | ±0.02 pH ±1 digit |
| mV accuracy | ±0.2 % full scale ±1 digit |
| Input impedance | ≥1×10^12 Ω |
| Power consumption | <6 W |
| Dimensions (W×D×H) | 170 × 125 × 55 mm |
| Weight | <1 kg |
| Operating temperature | 5‑45 °C |
| Maximum relative humidity | <85 % |
Keep the electrode dry when not in use, soak new or long‑stored electrodes in pH immersion solution for 24 hours before use, and store the sensitive part in the immersion solution when idle.