Hach-lange HQD - Gel filled ORP_Redox electrode MTC Manuel d'utilisateur télécharger pdf (Page 11)

DOC272.53.80033 11

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 (MTC101) Settings.

3. Select Modify Current Settings.

4. Select Calibration Options.

5. Update the settings. Refer to Table 4.

Table 3 Measurement options settings

Setting Options Description

Response time

Fast

Medium (default)

Slow

The response time affects the speed of the measurement by

adjusting the stabilization criteria.

Fast: 2 mV/min

Medium: 1 mV/min

Slow: 0.5 mV/min

Measurement limits

Lower limit (default: -1200.0

mV)

Upper limit (default: 1200.00

mV)

The measurement limits can be set to match the acceptable

values for the sample. When the measurement is above the

upper limit setting or below the lower limit setting, the meter

will show an "Out of limits" message.

This message is an alert to a potential problem with process

conditions.

Table 4 Calibration options settings

Settings Option Description

Standard

ZoBell’s (221mV -- 25ºC)

Light’s (468mV -- 25 ºC)

Custom

Temperature compensated for ZoBell’s

solution.

Standard values will appear on

Calibration Options screen.

Light’s solution is characterized at 25

ºC. Custom standard values and

temperature are user defined.

Calibration reminder

Reminder repeat: Off (default), 1 d, 7 d, 30 d

Meter will make an audible sound when

calibration is due. and repeat the sound

at selected interval.

Expires: Immediately, Reminder + 30 min,

Reminder + 1 hr, Reminder + 2 hr, Continue

Reading

Calibration expires after a specified

time.

Note: The meter cannot be used to read

samples after calibration has expired

unless Continue Reading is selected.

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Hach-lange HQD - Gel filled ORP_Redox electrode MTC Manuel d'utilisateur Page 11

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