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Hanna Instruments HI2550 User Manual

Hanna Instruments HI2550
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15
FOUR, THREE OR TWO-POINT CALIBRATION
Proceed as described in “FIVE‑POINT CALIBRATION” section.
• Press CAL after the fourth, third or second calibration point was
confirmed. The instruments will memorize the calibration data and
return to measurement mode.
If necessary, press the ARROW keys to select a different buffer value.
The “
” tag will blink on the LCD until the reading is stable.
When the reading is stable and close to the selected
buffer, the “CFM” tag will blink.
Press CFM to confirm calibration.
The calibrated value is then displayed on the primary
LCD and the fourth expected buffer value on the
secondary LCD.
After the third calibration point is confirmed, submerse the pH
electrode and the temperature probe approximately 3 cm (1¼”)
into the fourth buffer solution and stir gently. The temperature probe
should be close to the pH electrode.
If necessary, press the ARROW keys to select a different buffer value.
The “
” tag will blink on the LCD until the reading is stable.
When the reading is stable and close to the selected
buffer, the “CFM” tag will blink.
Press CFM to confirm calibration.
The calibrated value is then displayed on the primary
LCD and the fifth expected buffer value on the second
ary LCD.
After the fourth calibration point is confirmed, submerse the pH
electrode and the temperature probe approximately 3 cm (1¼”)
into the fifth buffer solution and stir gently. The temperature probe
should be close to the pH electrode.
If necessary, press the ARROW keys to select a different buffer value.
The “
” tag will blink on the LCD until the reading is stable.
When the reading is stable and close to the selected
buffer, the “CFM” tag will blink.
Press CFM to confirm the fifth calibration point.
The instrument stores the calibration value and returns
to normal measurement mode.

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Hanna Instruments HI2550 Specifications

General IconGeneral
BrandHanna Instruments
ModelHI2550
CategoryMeasuring Instruments
LanguageEnglish

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