Thermo Fisher Scientific Alpha pH 600 RF (In the process of updating the brand guideline & product image) - Manual (Page 23)

- 17 -
11 From pH measurement mode press CAL key to enter calibration mode
as described in section 4.2. The LCD shows ‘CAL PH’. Press ENT key to
begin calibration.
2 Place the electrode in pH 7.00 buffer. Immerse the temperature probe in
the buffer solution if ATC mode is enabled. Immerse the potential
matching pin in the buffer if symmetrical mode is enabled. The buffer
annunciator appears in LCD. Lower display shows pH 7.00 (USA
standard buffer). Upper display shows the current uncalibrated pH
reading. Allow the reading to stabilize. LCD shows ‘READY’ annunciator
when the reading is stable. Press CAL key to confirm the reading.
3 The calibration is completed. The pH Transmitter re-calculates electrode
properties based on the calibration. The new slope (in mV) is shown in the
upper display and normalized temperature is shown in lower display.
Press ENT key to exit from the calibration.
4 The pH Transmitter reverts to pH measurement mode.
NOTE: Refer notes at the end of this section for additional information and
possible error indicators of calibration process
2-Point Calibration:
CAL CAL
pH
READY
pH
CAL
pH
READY
pH
CAL
pH
mV MEAS
READY
CAL
pH
READY
pH
ENT ENT ENT ENT
ENT
CAL
°C
ATC
pH
1
1 1 2 3 4 5 5
3
1 From pH measurement mode press CAL key to enter calibration mode
as described in section 4.2. The LCD shows ‘CAL PH’. Press ENT key to
begin first calibration point.
2 Place the electrode in pH 7.00 buffer. Immerse the temperature probe in
the buffer solution if ATC mode is enabled. Immerse the potential
matching pin in the buffer if symmetrical mode is enabled. The buffer
annunciator appears in LCD. Lower display shows pH 7.00 (USA
standard buffer). Upper display shows the current uncalibrated pH
reading. Allow the reading to stabilize. LCD shows ‘READY’ annunciator