PHS digital display acidity meter is a high-precision instrument for measuring PH value in laboratory. It has dual functions of PH and mV. The E201 composite electrode was used for fast reaction and good stability. This series of instruments are widely used in scientific research, teaching, agriculture and many other disciplines and fields.
The activity of hydrogen ions in aqueous solution is converted into electric energy by A sensor (pH composite electrode), which is input to the instrument. After operation, discharge and detection, A/D is converted into digital display. The above electrical energy conforms to nernst equation:
Technical parameters and working conditions
| Instrument model | HZQW_PHS-25 HZQW_PHS-2C HZQW_PHS-3C |
| PH measurement range: | 0.00 ~14.00pH 0.00 ~14.00pH 0.00 ~14.00pH |
| PH measurement accuracy | ±0.05 pH ±0.02 pH ± 0.01 pH |
| Resolution | 0.01pH 0.01pH 0.01pH |
| MV measurement range is | 0~±1999mV 0~±1999mV 0~±1999mV |
| MV measurement accuracy | ±10mV ±10mV ±2mV |
| The resolution is | 1mV 1mV 1mV |
| Temperature compensation range | 0~60°C 0~60°C 0~60°C |
| Standard buffer solution | pH4.00; PH6.86; PH9.18, |
| Power type stabilized voltage | power adapter, or power cord |
| Appearance size | 220mm× 200 mm & times; 85 mm |
| The weight about | 1 kg |