10
For directions on how to calibrate your meter:
• See sections 4.2-4.3 on pages 11-13 for pH calibration
• See section 4.4-4.5 on page 14-16 for % saturation calibration
• See section 4.4 and 4.6 on page 14, 17-18 for mg/l (ppm) calibration
• See section 4.7 on pages 19 for Temperature Calibration
4. Calibration
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 P1.0 in the SETUP section, page 32.
• % saturation: Program P3.0 in the SETUP section, page 41.
• mg/l (ppm): Program P2.0 in the SETUP section, page 49.
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 P4.0 in the SETUP section, page 38.
• % saturation: Program P7.0 in the SETUP section, page 46.
• mg/l (ppm): Program P6.0 in the SETUP section, page 55.
NOTE:
Resetting the meter will set meter to factory defaults.
pH, % saturation and mg/l (ppm) must be reset separately.
4.1
