3.3 Calibration Messages
1. If a 1-point calibration has been successfully performed, the 901-PH will
display the asymmetry of the sensor and then go back to pH mode. For
example…
1 Point Cal. OK1 Point Cal. OK
then:
Asym=0.10pHAsym=0.10pH
The " ∗∗ " in place of the decimal point in the pH reading is not removed
unless a full 2 point calibration has been previously performed.
2. If a 1-point calibration has failed, the 901-PH will display the failed
asymmetry value of the sensor, before returning to pH mode. For example…
1 Point Cal.Fail1 Point Cal.Fail
then:
Asym=1.10pHAsym=1.10pH
The decimal point in the pH reading is replaced by a " ∗∗ " to indicate that pH
is not correctly calibrated.
3. If a 2-point calibration has been successfully performed, the 901-PH will
display the asymmetry and slope of the sensor and then go back to pH mode.
For example…
2 Point Cal. OK2 Point Cal. OK
then:
Asym=0.10pHAsym=0.10pH
then:
Slope=99.0%Slope=99.0%
Note that " ∗∗ " in the pH reading has now been replaced by a decimal point,
due to the successful calibration.
4. If a 2-point calibration has failed, the 901-PH will display the following
message, and then the failed slope value of the sensor before returning to pH
mode. For example…
2 Point Cal.Fail2 Point Cal.Fail
then:
Slope=85.0%Slope=85.0%
Note that " ∗∗ " replaces the decimal point in the pH reading to indicate that
pH is not correctly calibrated.
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