Hach-lange HQD - Sodium (Na+) Ion Selective Electrode ISENa Manuale Utente Scaricare il pdf (Pagina 10)

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6. If prompted, enter a name for the new method settings. Additional changes made to

the settings of an existing method are automatically saved with the same method

name.

7. Push

EXIT until the meter returns to the measurement mode.

Change calibration options

1. Make sure an electrode is connected to the meter.

2. Push the

METER OPTIONS key and select (ISENa381) Settings.

3. Select Modify Current Settings.

4. Select Calibration Options.

5. Update the settings. Refer to Table 3.

Table 3 Calibration options settings

Settings Options Description

Standard set

10.0, 100.0, 1000.0 - mg/L

100.0, 1000.0 - mg/L

Custom Standard Set (Standard set values will

appear on Calibration Options screen. Refer to

Table 4.)

Note: Only the minimum cal points must be

satisfied for the

DONE key to appear.

Temperature compensated standard sets used

for calibration.

Standard set values will appear on Calibration

Options screen.

Custom standard sets are characterized at 25

°C. A custom standard can also be chosen by

selecting Custom buffer.

Calibration units

mg/L (default)

µg/L (available only for custom calibration set)

g/L

g/kg

mol/L

mmol/L

mol/kg

ppm

ppb

Select the preferred unit for ISE

Calibration.

Minimum Cal points 2 or 3

Minimum number of points required before

calibration can be completed.

Slope limit

Range: 1% to 10% (acceptable calibration slope

criteria)

Slope must fall within set limits for successful

calibration. A narrow tolerance gives a more

accurate calibration.

Calibration reminder

Reminder Repeat: Off (default), 2 h, 4 h, 8 h, 2

d, 5 d, 7 d

Meter will make an audible sound when

calibration is due and repeat the sound at

selected interval.

Expires: Immediately, Reminder + 30 min

(default), Reminder + 1 hr, Reminder + 2 hr,

Calibration expires after specified time.

Note: Meter cannot be used to read samples

after calibration has expired unless Continue

Reading is selected.

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 16

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