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3 ph calibration, 1 for usa standard buffer – Thermo Fisher Scientific Alpha pH 600 RF (In the process of updating the brand guideline & product image) User Manual

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CAL

°C

READY

ATC

pH

CAL

CAL

HOLD

pH

ENT

4.3

pH Calibration

The pH Transmitter is capable of calibration of up to 2 points using USA or NIST pH
buffer standards. All new calibration values will automatically override the existing
calibration data. pH buffer values are referenced to 25

o

C. Ensure the measurement

mode is set to pH. (Refer Section 5.5 for switching measurement modes). All pH
buffer values have window of up to

± 1 pH tolerance during calibration. Calibration

error can be occurred if the measured pH value exceeds this window. If you wish to
abort the pH calibration, press ▲ and ▼ keys simultaneously and the pH
Transmitter reverts to pH measurement mode.

4.3.1

For USA Standard Buffer

Make sure that the pH Transmitter is set to accept USA standard buffer in the Setup
mode. (Refer Section 5.4 for Buffer Selection Settings) The factory default is USA
standard. It is recommended that you perform a 2-point calibration at room
temperature (25

o

C), starting with the first buffer at pH 7.00 followed by any other

buffer value (pH 4.01 or 10.01).

1-Point Calibration:

CAL

HOLD

CAL

pH

Y

READ

pH

HOLD

CAL

pH

mV

HOLD

MEAS

°C

Y

READ

ATC

pH

°C

CAL

ENT

To exit Calibration mode at any time press ▲ and
keys simultaneously (Escape).

The calibration is always carried out in the units of
measurement (pH or mV), selected in setup mode

1

1

2

3

4

ENT