Altronics 88910003 Schnellstart-Handbuch - Seite 8

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1. Turn on pH meter
2. Dissolve each buffer solution in 250 ml of distilled water (approx. 1 cup each)
3. Immerse the electrode into the pH 6.86 solution.
(Under the temperature of 25)
4. Press the "CAL" (calibration) button for 3 seconds and release
-Display will start flashing 6.86
-Wait until the display stops flashing.
Rinse the electrode with distilled water and dry it with filter paper.
5. Immerse the electrode in pH 4.00 solution,
- Press "CAL" button for 3 seconds ，then press and release immediately second time
- Reading will start flashing 4.00
- Wait until display stops flashing
Rinse and dry the electrode with distilled water as before.
3.
Test calibration by inserting electrode int
4.
o pH 9.18 buffer solution,
Gently swirl electrode until digital display stabilizes. Display should read between 9.16 and 9.20.
(If necessary repeat calibration procedure)
Note:
Recalibration is required in the following conditions:
- Lengthy periods of inactivity
- Very frequent use
- The testing accuracy requirement is very high.
- The "cal" (calibration) button was pushed and electrode exposed to air for extended period of time
Maintenance:
Always replace protective cap after using digital meter to keep electrode from drying out due to
prolonged exposure to air,
Which leads to slow and/or unstable readings.
If electrode has been dried out immerse it into distilled water for a few hours.
LowBatt
When the display value is fuzzy or unshown, the battery should be replaced promptly. Pay attention
to the polarity of battery.
Warranty
The instrument is warranted to the purchaser for a year from the date of purchase.
If during these periods, repair or replacement of the instrument is required,
Please return the instrument to either your dealer or to our office. The repair will be effected free of
charge. (Damage is not due to negligence or erroneous operation by the user)
Note: Please provide purchase invoice or proof before returning your instruments back.