Hach Lange sensION+ EC71 Manual page 13

4. Operation
4.6. Other options for calibration
Molar standards
147 µS/cm, 1413 µS/cm, 12.88 mS/cm and 111.8 mS/cm at 25 ˚C
(77 ˚F)
Demal standards
1049 µS/cm, 12.85 mS/cm and 111.31 mS/cm at 25 ˚C (77 ˚F)
NaCl standards
1014.9 µS/cm at 25 ˚C (77 ˚F)
Calibration to X value
Manual re-adjustment of the measured conductivity at any value
of the scale.
The EC readjustment is equivalent to calibration with only one
buffer.
10-04-2010 17:15
EC CALIBRATION
Calibrate EC
Molar standards
...
Start calibration
Start calibration
sensION+ EC71 HACH LANGE 7010.indd ANG:9 sensION+ EC71 HACH LANGE 7010.indd ANG:9
Calibration Calibration
Type of calibration Molar standards
Demal standards
Cal. Frequency NaCl standards
To a X value
Display :No Data introduction
Calibration
Molar standards
Demal standards
NaCl standards
To a X value
Data introduction
Calibration
Molar standards
Demal standards
NaCl standards
To a X value
Data introduction
Calibration
Molar standards
Demal standards
NaCl standards
To a X value
Data introduction
Calibration
Molar standards
Demal standards
NaCl standards
To a X value
Data introduction
Calibration
Demal standards
NaCl standards
To a X value
Data introduction
Theoretical cal.
Calibration Calibration
Type of calibration
Calibration frequency
Cal. Frequency Automatic warning.
1 day 00 hours
Display :No
Cell constant introduction
Manual introduction of the cell constant. For example, when the
cell has been calibrated previously in calibration laboratory.
Theoretical calibration
Selecting "theoretical calibration" the calibration data of the cell
in use are replaced by C=1.000 cm
This step is prior to the obtention of a calibration certificate.
Calibration frequency
Select between 1 and 99 days.
The instrument by default is programmed for calibration every 15
days and indicates the remaining time to the new calibration.
Selecting 0 h the automatic re-calibration warning is deacti-
vated.
Note: Select "Display " for simultaneous display of EC and
resistivity.
Important note:
Once the calibration is re-programmed, it will be performed with
the new programming.
EC CALIBRATION
Molar standards
Use standard 147 uS
Continue...
EC CALIBRATION
Demal standards
Start of calibration with the selected
Use
standard 12.85 uS
standards.
Continue...
EC CALIBRATION
NaCl standard
Use
Standard 1014.90 uS
Continue...
EC CALIBRATION EC CALIBRATION
To a X value
* * *
uS/cm @25˚C
Use specific standard
Continue...
EC CALIBRATION
Data introduction
C=1.000 cm-1
Modify the data with
Accept with
The instrument goes to
MEASURE menu. The
introduced calibration
data will be used.
Accept with
EC CALIBRATION
The instrument goes
Theoretical cal.
in MEASURE menu.
C=1.000 cm-1
The theoretical cali-
Continue...
bration will be used.
The instrument goes
to the option "EC
CALIBRATION".
-1 .
EC CALIBRATION
21,4˚C 21,4˚C
83.1
uS/cm @25˚C
00:01 00:05
EC CALIBRATION
21,4˚C
* * *
uS/cm @25˚C
00:07
The instrument goes
EC CALIBRATION
to main menu.
Adjust value
83.1 uS/cm @25˚C
00:15
EC CALIBRATION
Adjust value
85.0 uS/cm @25˚C
00:15
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