Hach sensION+ EC71, Руководство пользователя

Страница: 9 / 120

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 probe
measuring chamber.
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 or to select DATA LOGGER.
Confirm.
2. Select Display data.
3. Select Calibration data and confirm with . The last calibration data
is shown.
• pH-the slope and offset values are shown alternating with the
deviation (in %) and calibration temperature.
• 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.
1. From the main menu use the or to select CALIBRATION. Confirm.
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 or to
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 or and and to select MEASURE.
Confirm.
2. Use the to change the following settings. Confirm every entry.
Option Description
TC TC—select Linear or Natural waters. Linear: enter a value in %/
°C (default 2.00%/Temperature). Natural waters: Non-linear for
natural waters, according to EN27888
Tref Reference temperature—select between 20 or 25 °C or Other
temperature.
TDS Factor Total dissolved solids (TDS) factor—enter TDS Factor
Measure Stability—select By stability Criterion: ± 1 digit in 6 s. In
continuous—enter the time interval for the In continuous Acquis.
interval. By time—enter the time interval for data storage or
printing data.
Display Ω Display Resistivity—select YES to show simultaneously
conductivity and resistivity.
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.
Advanced operations
Use a sample ID
The sample ID tag is used to associate readings with a particular sample
location. If assigned, stored data will include this ID.
1. From the main menu use the or to select SYSTEM. Confirm.
2. Use the or to select Sample ID and confirm.
English 9