User Setup - Hach POLYMETRON 9245 Manuel D'utilisation De Base

4. Enter the time in HH:MM:SS format (24 hour clock).
5. On completion press Esc to return to the main System Setup menu.
Display options
1. Select the DISPLAY option to set up the display parameters.
2. Select the LANGUAGE, CONC. UNIT and TEMPERATURE UNIT fields in turn, and set your
preferences by scrolling through the available options.
Passwords
1. Select the PASSWORDS option to set passwords for access to programming, calibration and
system setup options.
2. Each password is a 4-digit numeric field. Enter the required value for each of the three
passwords. A value of 0000 signifies no password is required to gain access to those menu
options.
Default values
1. Select the DEFAULT VALUES option to erase all the previously set user parameters and load
the default values. A warning message is displayed and confirmation of this action is required.
2. To exit from the screen without loading the default values, press the Esc function key.
3. To load the default values, select the Yes option.
Adjust mA output
1. Select the ADJUST mA OUTPUT option to access the analyzer's analog output parameters.
2. Select the mA output you wish to change to display the next screen.
3. The option to increase or decrease the low end value (0 mA or 4 mA depending on your setting)
is displayed. Change the value up or down by selecting the Minus or Plus indicators at the
bottom of the screen.
4. On completion press the Enter function key and the display changes to 20 mA.
5. Enter the adjustment value in the same way as for the low end value. On completion press the
Enter function key, and the display reverts back to the main ADJUST mA OUTPUT screen, to
allow you to select the next output to adjust.

USER SETUP

Measurement
Targeted pH (non-cationic applications only)
Select the pH option and enter the target pH value for your application. The measured pH value of
the sample in the measuring cell should be within ±0.2 pH of the target.
Total gas/water ratio (cationic applications only)
Enter the ratio of gas to water to minimize the DIPA consumption.
Measure steps
1. Select the MEASURE STEPS option to set up the measurement timings.
2. The on line measurement time defines the measurement time of the sample and how often the
measurement values are stored in memory. For a single channel configuration, it is
recommended to leave this time at the default value of 10 minutes.
3. If smart rinsing is required after a calibration, grab sample or sensor reactivation, set this
parameter to Yes and define the maximum rinse time.
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