Users Manual

28
CALIBRATION
Press CFM to confirm the calibration point.
Press ESC to leave calibration or continue for a two point calibration.
The probe must be rinsed thoroughly with purified water to remove all traces of the zero calibration
solution.
Single Point Automatic Slope Calibration at 100%
Suspend the probe into the water saturated air container and wait for the probe and sample to reach
thermal equilibrium.
Press CAL. The calibration menu will be displayed.
Press DO to select the DO calibration. The meter will automatically recognize the 100% saturated
standard (or equivalent mg/L).
The DO calibration screen will be displayed and the standard 100% saturation (or 8.26 mg/L,
depending on the currently selected measuring unit), will be automatically displayed.
When the reading is stable within the acceptable range, the CFM functional key is displayed.
Press CFM to confirm the calibration point.