Hach 5500sc PO4 3-LR Operations page 18

The automatic calibration uses the installed known standards to calibrate the analyzer. Calibration
can be done manually or scheduled to occur automatically. Use the calibration menu to view
calibration data, start or cancel the auto calibration, override the auto cal settings, calibrate manually
or to reset to the default calibration.
1. Push cal to display the calibration menu.
Option
START MANUAL CAL
SET AUTO CALIBRATION Refer to
CALIBRATION DATA
OVERRIDE CALIBRATION Enter new slope and/or zero value (reagent blank). When OVERRIDE
OUTPUT CALIBRATION
RESET DEFAULT CAL
Schedule automatic calibrations
1. Push cal, then select SET AUTO CALIBRATION.
2. Select SLOPE CAL or ZERO CAL.
3. Select ACTIVATE AUTO CAL>YES.
4. Select STD SOLUTION and enter the standard value in ppb(not applicable for ZERO CAL).
5. Select a schedule option for calibration.
Option Description
TIME BASE Sets the interval between calibrations. Options: DAYS or HOURS.
WEEK DAY Selects the day or days of the week for calibration when TIME BASE is set to DAY.
TIME Sets the time of day for calibration when the TIME BASE is set to DAY.
SET INTERVAL Sets the interval between automatic calibrations in hours when the TIME BASE is set to
HOURS .
Start a calibration manually
1. Push cal, then select START MANUAL CAL.
2. The type of calibration is displayed. Push enter to start the calibration.
3. The measurement status is displayed. Select YES to interrupt the current measurement cycle and
start the calibration immediately. Select NO to wait until the current measurement cycle has
completed before the calibration starts.
4. Complete the instructions on the display.
18 English
Description
Refer to Start a calibration manually
Schedule automatic calibrations
Displays data from the last calibration and the due date and time of the next
scheduled calibration.
CALIBRATION is selected, the automatic calibration is disabled for the selected
option.
Select a 4-20 mA output and enter the output values to be sent.
Reset calibration data to default values and disables automatic calibration. On
completion, perform a new calibration.
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on page 18.