Hach Sension4 Reference guide

51775-23
Laboratory pH/ISE Meter Quick Reference Card
Changing Meter Setup Options
Setup options 1–6 and 10 have default settings (underlined in the table). To change the default
setting, use the table below. Settings for options 7–9 must be entered from the setup menu.
Setup How To Get There Description of Option
1 Turn the meter on and press
SETUP. Press ENTER.Choose between using the BNC or 5-pin connector. ENTER toggles between the options. Press EXIT when selection is
complete.
2 Turn the meter on and press
SETUP. Press the up arrow once.
Press ENTER.
Turn display lock On or Off. ENTER toggles between the
options. Press EXIT when selection is complete.
3 Turn the meter on and press
SETUP. Press the up arrow twice.
Press ENTER.
Choose between °C or °F for displayed temperatures.
ENTER toggles between the options. Press EXIT when
selection is complete.
4 Turn the meter on and press
SETUP. Press the up arrow three
times. Press ENTER.
Select measurement resolution from tenths, hundredths, or
thousandths. ENTER toggles between the options. Press
EXIT when selection is complete.
5 Turn the meter on and press
SETUP. Press the up arrow four
times. Press ENTER.
Select pH 6.86 or 7.00 as the pH buffer the meter will
automatically recognize during calibration. ENTER toggles
between the options. Press EXIT when selection
is complete.
6 Turn the meter on and press
SETUP. Press the up arrow until
the setup number is 6.
Press ENTER.
Enter the stability criteria (stability drift rate) using the
number keys (the default value is 0.500 mV). Press ENTER
to accept the value. Press EXIT when selection is complete.
7 Turn the meter on and press
SETUP. Press the up arrow until
the setup number is 7.
Press ENTER.
Select the time of day by pressing the desired number key.
The meter uses a 24-hour clock. All four places must have a
value. Use a 0 if the left-most digit does not have a value
(i.e., 03:08). Press ENTER to accept the value. Press EXIT
when selection is complete.
8 Turn the meter on and press
SETUP. Press the up arrow until
the setup number is 8. Press
ENTER.
Set the month and day by pressing the desired number
keys. The month uses the two places left of the slash; the
day of the month occupies the two places right of the slash.
Enter a 0 if the left-most digit does not have a value
(i.e., 02/06). Press ENTER to accept the value. Press EXIT
when selection is complete.
9 Turn the meter on and press
SETUP. Press the up arrow until
the setup number is 9.
Press ENTER.
Set the year by using the number keys. Every place must
have a value. Press ENTERto accept the value. Press EXIT
when selection is complete.
10 Turn the meter on and press
SETUP. Press the up arrow until
the setup number is 10.
Press ENTER.
Select the print interval by scrolling through the options with
the arrow keys (default is Off). When the desired option is
displayed, press ENTER to accept the value. Press EXIT
when selection is complete.

pH Calibration
1. Prepare up to five pH buffers (choose from pH 1.69, 4.01, 6.86, 7.0, 10.01 and 12.45 buffers).
The meter can use other buffers for calibration, if desired.
2. Turn the instrument on. Select the desired channel. Select the 5-pin connector (in Setup 1). If
necessary, press pH/mV to put the channel in pH mode.
3. Press CAL. The display will prompt for standard 1.
4. Place the pH electrode in one of the buffers. Go to step 6 if using auto-recognized buffers.
5. If not using auto-recognized buffers, press READ/ENTER. Use the number keys to enter the
pH value of the buffer. Press ENTER. It is not necessary that all four places have values
entered in them.
6. When the reading is stable, the meter will prompt for standard 2. Rinse the electrode with
deionized water.
7. Place the electrode in the second buffer. Press READ/ENTER.
8. Repeat steps 4–6for the third buffer or press EXIT.
9. When the reading is stable, the slope and Store ? will appear.
10. To save the calibration, press ENTER. To exit without saving the calibration, press EXIT.
ISE Calibration
1. Prepare two to seven standards. Pour 25 mL of each standard into a beaker.
2. Turn the instrument on. Select the channel. Select the BNC connector. If necessary, press
ISE/mV to put the channel in ISE mode.
3. Press CAL. Use the arrow keys to change the units of measurement, if desired.
4. If necessary, add ISA to the lowest standard. Place the electrode in the standard and stir.
5. Press ENTER. Enter or change the standard value using the number keys. Press ENTER to
accept the displayed value.
6. When the reading is stable, the meter will prompt for standard 2.
7. Rinse the electrode with deionized water. Repeat steps 4–6 for the remaining standards.
8. After the last standard is measured, press EXIT. Store ? will appear.
9. To save the calibration, press ENTER. To exit without saving the calibration, press EXIT.
© Hach Company, 1999. All rights reserved. Printed in the U.S.A hm/dk 5/99