Thermo Fisher Scientific Alpha pH 600 RF (In the process of updating the brand guideline & product image) - Manual (Page 27)

4.4 Check Calibration
MEAS
pH
READY
ATC
pH
CAL
pH
mV
CAL ENT
ENT
1. While in Measurement mode press the CAL key. The display will prompt you to
enter a security code. Leave the security code at “0” (view only mode).
2. Press the ENT key.
The display shows the slope in mV (Main Reading) and the normalized
temperature is shown on the Auxiliary reading of the display.
NOTE: To exit from any intermediate steps, press ▲ and ▼ keys (Escape)
together. It will return to measurement mode.
4.5 ORP Calibration
If the unit of measurement is in mV, then the calibration is also carried out in mV.
CAL mV
HOLD
CAL m V
HOLD
CAL m V
HOLD
m V
ENT CAL
°C
READY
1. Enter Calibration mode as described in section 4.2. The display shows “CAL
ORP” (for mV calibration) and the “CAL” indicator appears on the display.
2. Place sensor in the solution.
3. Press the ENT key to start calibration. The main display shows the current mV
output of the electrode with offset adjustment and auxiliary display shows the
mV output with out any offset adjustments.
4. Press the ▲ or ▼ key to match the mV value to exact reading.
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