Hach-Lange SENSION+ EC71 - Manual (Page 10)

3. Use the or to select
Option Description
Deactivated Select Deactivated if no printer or PC is connected.
For Printer Select Dot matrix printer or Thermal printer.
For Computer Select Terminal, LabCom or LabCom Easy. The LabCom
Software controls several modules, pH and conductivity
meters, automatic burettes, Samplers and so on from a
computer. The LabCom Easy software gets pH and
conductivity data from a PC.
Change the date and time
The date and time can be changed from the Date / Time menu.
1. From the main menu use the or to select SYSTEM. Confirm.
2. Use the or to select Date / Time and confirm.
3. Use the and to advance to the next step and use the or to
change a value. Confirm.
The current date and time will be shown on the display.
Adjust the display contrast
1. From the main menu use the or to select SYSTEM. Confirm.
2. Use the or to select Display contrast and confirm.
3. Use the and to adjust the contrast of the display and confirm.
Adjust the temperature
The temperature measurement can be adjusted at 25 °C (77 °F) and/or
85 °C (185 °F) to increase accuracy.
1. Put the probe and a reference thermometer in a container of water at
approximately 25 °C and allow the temperature to stabilize.
2. Compare the temperature read by the meter with that of the
reference thermometer. The difference is the adjustment value for
the meter.
Example: reference thermometer: 24.5 °C; meter: 24.3 °C.
Adjustment value: 0.2 °C.
3. Enter the adjustment value for the 25 °C reading:
a. From the main menu use the or to select SYSTEM. Confirm.
b. Use the or to select Readjust temp. and confirm.
c. Use the or to select 25 °C and confirm.
d. Use the arrow keys to enter the adjustment value for 25 °C.
Confirm.
4. Put the probe and a reference thermometer in a container of water at
approximately 85 °C and allow the temperature to stabilize.
5. Compare the temperature from the meter with that of the reference
thermometer. The difference is the adjustment value for the meter.
a. Use the or to select 85 °C and confirm.
b. Use the arrow keys to enter the adjustment value for 85 °C.
Confirm.
c. Select Save changes and confirm.
Change the stirring settings
The magnetic stirrer can be turned on and the stirring speed can be
changed in the Stirring menu.
1. From the main menu use the or to select SYSTEM. Confirm.
2. Use the or to select Stirring and confirm.
3. To turn on/off the stirrer push .
4. When the stirrer is turned on, use the or to change the stirring
speed in %.
Note: Use the or to change the stirring speed during calibration and
during a measurement.
Change the temperature units
The temperature units can be changed to Celsius or Fahrenheit.
1. From the main menu use the or to select SYSTEM. Confirm.
2. Use the or to select Temperature units and confirm.
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