Ion Selective Measurements - Hach senslON+ MM 374 Manual De Instrucciones

4. Operation

4.12. Ion Selective measurements

The factory configuration is as follows:
Channel 1, pH+EC, Channel 2, ISE To measure ISE with Channel
2 see "Change of measurement units", page 17.
Curve number 1
+
™ can store in memory up to 4 calibration
sensION
MM 374
curves for each channel.
Measurement by stability
It is the standard measurement mode of sensION
details in "pH+EC measurement", page 12.
Criterion of "rapid" stability: variation < 0.5 mV in 6 s.
Criterion of "standard" stability: variation < 0.1 mV in 10 s.
Criterion of "strict" stability: variation < 0.05 mV in 10 s.
It is highly recommended to apply the same criteria to measure
and calibrate.
Measurement in continuous or by time
See details in "pH+EC measurement", page 12.
ISE measurement with printer
See pH measurement with printer in page 14.
ISE Calibration
10-04-2007 17:15
ISE CALIBRATION
Channel 2
Programming ISE calibration.
Curve 1 ISE Calibration
Curve n.:1
...
Stability: standard
Start ISE calibration Units: mol/l
Channel 2
Name of ion: F-
N. of standards: 5
Calibrating ISE F- ISE Calibration
Curve n. 1 Curve n.:1
Use standard Stability: standard
0.00001 mol/l Units: mol/l
Name of ion: F-
Continue N. of standards: 5
Note: the instru- ISE Calibration
Curve n.:1
ment will ask for the
Stability: standard
standard with lowest
Units: mol/l
Name of ion: F-
concentration.
N. of standards: 5
ISE Calibration
Curve n.:1
Stability: standard
Units: mol/l
Name of ion: F-
N. of standards: 5
ISE Calibration
Curve n.:1
Stability: standard
Units: mol/l
Name of ion: F-
N. of standards: 5
ISE Calibration
Stability: standard
Units: mol/l
Name of ion: F-
N. of standards: 5
Standard 1: 0.00001
16
+
™ . See
MM 374
ISE Calibration
Curve no.: 1
ISE Calibration
Stability criteria:
Rapid
Standard
Strict
ISE Calibration
Unidades:
mol/l
g/l
mg/l
mmol/l
ISE Calibration
Name of ion:
F-
ISE Calibration
N. of standards: 5
ISE Calibration
Standard 1(mol/l):
0.00001
etc.
10-04-2007 17:15
MEASURE ISE
Channel 2
Reprogramming ISE measurement conditions.
Curve 1, F- Measuring conditions
Curve no.: 1
...
N. of decimals: 6
Start ISE calibration Measure: stability
Channel 2
Factor: 1.0000
Start meas. ISE
etc.
Measuring conditions
Curve no.: 1
N. of decimals: 6
Measure: stability
Factor: 1.0000
Start meas. ISE
Measuring conditions
Curve no.: 1
N. of decimals: 6
Measure: stability
Factor: 1.0000
Start meas. ISE
Measuring conditions
Curve no.: 1
N. of decimals: 6
Measure:
Factor: 1.0000
Start meas. ISE
Measuring conditions
Curve no.: 1
N. of decimals: 6
Measure: stability
Factor: 1.0000
Start meas. ISE
etc.
Curve number
+
1 to 4: The sensION ™
MM 374
calibration curves for each channel.
Stability criteria: see above "Measurement by stability"
It is highly recommended to apply the same criteria to measure
and calibrate.
Units
mol/L M, g/L, mg/L, ppm, mmol/L, mM, µmol/L, %: Concentration
units of the calibration standards. The measurement will be
performed in the same units..
Name of the ion
5 characters to relate the curve with the ion to measure .
Number of standards: 2 to 5
Standards concentration
It is recommended to introduce the standard concentration in
increasing order, starting with the lower concentration. The
instrument will dispose them automatically.
Measuring conditions
Measure with
Curve n. 1
Curve n. 2
Curve n. 3
Curve n. 4
Measuring conditions
Curve n. 1
Number of decimals?
6
Measuring conditions
Measure:
By stability
In continuous
By time
Measuring conditions
Factor?
stability 001.0000
can store in memory up to 4