Thermo Fisher Scientific Alpha pH 2000 - Manual (Page 26)

5.5 View actual zero and slope
ENT
ENT
CAL
P H
CAL
MEAS
P H
O C
atc
1. While in Measurement mode press the CAL key. The display will prompt
you to enter a security code. Leave the security code at “000” (view only
mode).
2. Press the ENT key.
The display shows the slope in mV (upper value) and the pH reading at 0 mV
(zero point, lower value).
Note: If no key is pressed for 30 seconds the transmitter
automatically returns to the Measurement mode.
3. Press the ENT key to return to the Measurement mode.