Instruction Manual
PD 300
4 CALIBRATION
4.1
Important Information on Meter Calibration
When you recalibrate your meter, old calibration points are replaced on a “point by point” basis
in pH and completely for % saturation and mg/L (ppm).
For example:
•
pH
: if you previously calibrated your meter at pH 4.01, 7.00 and 10.01, and you
recalibrate at pH 7.00, the meter retains the old calibration data at pH 4.01 and pH 10.01.
•
% saturation and mg/L (ppm)
: all new calibrations automatically override existing
calibration data.
To view current calibration points:
•
pH
: Program 1.0 in the SETUP section, page 30.
•
% saturation
: Program 3.0 in the SETUP section: page 41.
•
mg/L (ppm)
: Program 2.0 in the SETUP section, page 41.
To completely recalibrate your meter, or when you use replacement probes, it is best to clear
old calibration data by resetting the meter.
To reset the meter to its factory defaults:
•
pH
: Program 4.0 in the SETUP section, page 36.
•
% saturation
: Program 7.0 in the SETUP section: page 49.
•
mg/L (ppm)
: Program 6.0 in the SETUP section, page 49.
NOTE
Resetting the meter will set meter to factory defaults. pH, % saturation and mg/L (ppm) must
be reset separately.
For directions on how to calibrate your meter:
See section 4.2 for Temperature Calibration
See sections 4.3 for pH calibration.
See section 4.5 for % saturation calibration
See sections 4.6 for mg/L (ppm) calibration
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