Thermo Fisher Scientific CyberScan PC 300 - Manual (Page 11)

Instruction Manual PC 300
7
4 C A L I B R AT I O N
4.1 Important Information on Meter Calibration
When you re-calibrate your meter, old calibration points are replaced on a “point-by-point”
basis in pH, and on a “range-by-range” basis in conductivity.
For example:
•
pH: if you previously calibrated your meter at pH 4.01, 7.00, and 10.01, and
you re-calibrate at pH 7.00, the meter retains the old calibration data at pH
4.01 and pH 10.01.
• Conductivity: If you previously calibrated your conductivity meter at 1413 μS
in the 0 to 1999
μS range and you re-calibrate at 1500 μS (which is also in the
0 to 1999
μS), the meter will replace the old calibration data (1413 μS) in that
range. The meter will retain all calibration data in other ranges.
•
TDS: If you previously calibrated your conductivity meter at 300 ppm in the 0
to 999 ppm range and you re-calibrate at 500 ppm (which is also in the 0 to
999 ppm), the meter will replace the old calibration data (300 ppm) in that
range. The meter will retain all calibration data in other ranges.
To view current calibration points:
• pH: Program P1.0 in the SETUP section
•
Conductivity & TDS: Program P5.0 in the SETUP section
To completely re-calibrate your meter, or when you use a replacement probe, it is best to
delete the old calibration data by re-setting the meter.
To reset the meter to its factory defaults:
• pH: Program P4.0 in the SETUP section
•
Conductivity & TDS: Program P9.0 in the SETUP section
NOTE: Re-setting the meter will set meter to factory defaults. Conductivity and pH must be
reset separately.
For directions on how to calibrate your meter:
•
See section 4.3 for pH calibration.
•
See section 4.4 for conductivity calibration.
• See section 4.4 for TDS calibration.
• See section 4.5 for Temperature calibration.