DO calibration
15
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DO Calibration
Calibration is necessary for accurate dissolved oxygen measurement. Two DO calibration
modes are available in PD meter for calibration,
• Saturated oxygen concentration mode (%)
• Dissolved oxygen measurement mode (mg/L)
To perform various DO calibrations, follow the procedures detailed below:
Set the air pressure value (default setup is 101.3 kPa) before calibration for accurate
measurement.
●
Calibration in saturated oxygen concentration mode (%)
Prerequisites
• Clean the membrane at the tip of the DO electrode with DI (deionized) water and wipe it
with tissue paper.
• Switch on the PD meter and plug in the DO electrode.
• Press the
key to keep the PD meter in saturated oxygen concentration mode (%)
mode.
• Calibration performed in clean air is referred as air calibration.
• Perform the air calibration in clean air at a location not subjected to dramatic temperature
change, rain or direct wind.
• Do not hold the tip of DO electrode with hand during calibration, as the electrode may be
affected by temperature causing instability in calibration value.
To abort an ongoing calibration process at any point of time, press the
key.
Note
Note
Tip
Summary of Contents for LAQUA-PD210
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Page 49: ...Data set up 35 DO mode...
Page 51: ...Data set up 37 DO mode...
Page 53: ...Data set up 39 DO mode...
Page 56: ...General set up 42 DO mode...
Page 58: ...General set up 44 DO mode...
Page 60: ...General set up 46 DO mode...
Page 62: ...General set up 48 DO mode...
Page 65: ...Clock set up 51 DO mode...
Page 67: ...Clock set up 53 DO mode...
Page 86: ...Specifications 67...
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