Sample Measurements - Hach sensION + pH31 Manual Del Usuario

5. Push to Start calibration.
6. Push to measure the first calibration solution.
The next calibration solution is shown.
7. Rinse the probe with deionized water and put the probe into the first
calibration beaker. Be sure that there are no air bubbles in the
membrane.
8. Push to measure the second calibration solution.
The next calibration solution is shown.
9. Rinse the probe with deionized water and put the probe into the first
calibration beaker. Be sure that there are no air bubbles in the
membrane.
10. Push to measure the third calibration solution.
When the calibration is good, the display briefly shows Calibration OK
and then returns to the main menu.
Note: When a printer is connected the print menu opens and the result can be
printed.
View the calibration data
Data from the most recent calibration can be shown.
1. From the main menu use the
Confirm.
2. Select Display data.
3. Select Calibration data and confirm with
is shown.
• pH-the slope and offset values are shown alternating with the
deviation (in %) and calibration temperature.
• ORP-the measured mV value and calibration temperature are
shown.
• Conductivity-the cell constant and calibration temperature for each
standard are shown.
Set the calibration reminder
The calibration reminder can be set between 0 to 23 hours or 1-7 days
(default 0 days). The display shows the remaining time to the new
calibration.
Note: When 0 days is selected, the calibration reminder is turned off.
or to select DATA LOGGER.
. The last calibration data
1. From the main menu use the
2. Use the to enter the calibration menu.
3. Use the or to select Cal. frequency and confirm.
4. Use the and to advance to the next step and use the
change a value. Confirm.
Push to start the calibration.

Sample measurements

Each probe has specific preparation steps and procedures for taking
sample measurements.
1. From the main menu use the
Confirm.
2. Use the to change the following settings. Confirm every entry.
Option Description
Resolution Select the resolution: 1, 0.1, 0.01 (default) or 0.001
Measure Stability—select By stability Criterion: Fast (variation < 0.02 pH
in 6 s), Standard (variation < 0.01 pH in 6 s) or Strict (variation
< 0.002 pH in 6 s). In continuous—enter the time interval for the
In continuous Acquis. interval (data storage or printing data). By
time—enter the time interval for data storage or printing data.
Display mV Display mV—select YES or NO to show mV.
Limits Limits—select YES or NO. YES: Enter the upper and lower
limits. An acoustic warning appears when the measurement is
out of limit. The report output shows an A next to the measured
value when the measurement was out of limit.
Isopotential Isopotential—change the Isopotential pH value in Data
introduction. Select Calculate to calibrate the probe again.
3. Push to start the measurement.
Note: If the measurement is not stabilizing after 120 seconds, the meter turns
automatically into the continuous measurement mode.
or to select CALIBRATION. Confirm.
or
or and and to select MEASURE.
English 9
to