Hanna-instruments HI 3220 Manuel d'utilisateur Page 15
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- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
15
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H CALIBRATIONH CALIBRATION
H CALIBRATIONH CALIBRATION
H CALIBRATION
It is recommended to calibrate the instrument frequently, especially if high
accuracy is required.
The pH range should be recalibrated:
• Whenever the pH electrode is replaced.
• At least once a week.
• After testing aggressive chemicals.
• When calibration alarm time out is expired - “CAL DUE” blinks (if feature
is enabled in SETUP).
• If “Outside Cal Range” message blinks during pH measurement (the
measurement range is not covered by current calibration, if this feature is
enabled in SETUP).
PROCEDURE
The HI 32xx family offers a choice of 7 standard buffers (1.68, 4.01, 6.86,
7.01, 9.18, 10.01 and 12.45 pH) and up to 5 custom buffers. The standard
pH buffers are temperature compensated during calibration. The custom, user
entered buffers are not temperature compensated during calibration.
When a custom buffer is selected during calibration, the “Custom” function
key is displayed on the LCD. Press Custom key in order to alter the value to the
actual pH value at the temperature of measurement. Use ARROW keys to
change the value within a ±1.00 pH window and then press Accept. Press
ESC to leave custom buffers value unchanged. Press Confirm.
For accurate pH measurements, it is recommended to perform a multipoint
calibration. At least a two-point calibration is required.
The instrument will automatically skip the buffers within ±0.2 pH window,
around one of the calibrated buffers.
• Pour small quantities of selected buffer solutions into clean beakers. For
accurate calibration use two beakers for each buffer solution, the first one for
rinsing the electrode and the second one for calibration.
• Remove the protective cap, open the fill hole and rinse the electrode with
some of the buffer solution to be used for the first calibration point.
FIVE-POINT CALIBRATIONFIVE-POINT CALIBRATION
FIVE-POINT CALIBRATIONFIVE-POINT CALIBRATION
FIVE-POINT CALIBRATION
• Immerse the pH electrode and the temperature
probe approximately 3 cm (1¼”) into a buffer solu-
tion of your
choice (pH 1.68, 4.01, 6.86, 7.01,
9.18, 10.01, 12.45 or a custom buffer) and stir
the buffer gently. The temperature probe should be
close to the pH electrode.
3 cm
- HI 3220 HI 3221 1
- Front viewFront view 5
- Front view 5
- Rear viewRear view 7
- Rear view 7
- HI 3220 SPECIFICATIONS 8
- HI 3221 SPECIFICATIONS 9
- HI 3222 SPECIFICATIONS 10
- OPERATIONAL GUIDE 11
- RELATIVE RELATIVE 24
- LAST ISE CALIBRATION DATA 30
- SETUPSETUP 31
- Replace 32
- Backlight 33
- Contrast 33
- Date/Time 34
- Time Format 34
- Date Format 34
- Language 35
- Temperature 35
- Log interval 36
- AutoEnd 36
- Instrument ID 37
- Baud Rate 37
- Meter Information 37
- Calibration Timeout 38
- First Point 38
- Custom Buffers 39
- Calibration Point 40
- Out of Cal-Range Warning 40
- ISE probe 40
- Change Slope 41
- Molar Weight 41
- ISE unit 42
- LOGGINGLOGGING 43
- Delete All 44
- Delete records 44
- PC INTERFACEPC INTERFACE 49
- PC INTERFACE 49
- • Instrument ID (4 chars) 52
- •slope (4 char) 54
- Inorganic 59
- Oil/grease 59
- TROUBLESHOOTING GUIDE 60
- ACCESSORIESACCESSORIES 61
- ACCESSORIES 61
- 4.7" 62
- 2.95" 63
- 0.25" 63
- 0.5" 65
Produits connexes et manuels pour Instruments de mesure Hanna-instruments HI 3220
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