Horiba Scientific LAQUA-PD210, Инструкция по эксплуатации

Страница: 32 / 88

DO calibration
18
● Calibration in dissolved oxygen measurement mode (mg/L)
Prerequisites
• Clean the membrane at the tip of the DO electrode with DI (deionized) water and wipe it
with tissue paper.
• Prepare required standard solutions (high-concentration and low-concentration solutions).
• Switch on the PD meter and plug in the DO electrode.
• Dip the DO electrode at least 6 cm in the standard solution.
• Press the
key to keep the PD meter in dissolved oxygen measurement mode (mg/L)
mode.
• Calibrate in the dissolved oxygen measurement mode in the order from high-concentration
solution to a low-concentration solution.
• User can adjust the measured dissolved oxygen reading by calibration and the adjusted
value is applied as an off set to the actual measurement.
• Prepare high-concentration solution by aerating a sample of fresh water for about 2 hours.
To abort an ongoing calibration process at any point of time, press the key.
Note
Tip