Detecting environmental conditions The requirements for the pH meter include Environmental temperature at (20 ± 5) C, relative humidity not more than 85%, AC power supply at (220 ± 20) V, (50 ± 2.5) Hz, and no electromagnetic interference that affects the normal operation of the pH meter. The detection method includes Appearance inspection and Measurement performance detection, where the error of indication detection step includes the use of national secondary standard materials to prepare a standard buffer solution, make measurements at Environmental temperature (20 ± 5) C, record the data and take the average value as the final measurement result of the pH meter.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | (N92) 海洋仪器 | ICS | (07.060) 地质学、气象学、水文学 |
| Release Date | 2007-12-19 00:00:00 | Implementation Date | 2008-01-01 00:00:00 |
