Hach sensION+ MM340 User Manual page 12

1. From the main menu use the
2. Use the or to select Date / Time and confirm.
3. Use the and to advance to the next step and use the
change a value. Confirm.
The current date and time will be shown on the display.
7.5 Adjust the display contrast
1. From the main menu use the
2. Use the or to select Display contrast and confirm.
3. Use the and to adjust the contrast of the display and confirm.
7.6 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
b. Use the or to select Readjust temp. and confirm.
c. Select Channel 1 or Channel 2 and confirm. The temperature for
channel 1 is measured by the conductivity cell and channel 2 is
measured by the pH probe. If no Conductivity cell is connected,
the temperature value must be entered manually or the
temperature measured in channel 2 can be applied to the meter.
d. Use the or to select 25 °C and confirm.
e. Use the arrow keys to enter the adjustment value for 25 °C.
Confirm.
12 English
or to select SYSTEM. Confirm.
or
or to select SYSTEM. Confirm.
or to select SYSTEM. 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
to
thermometer. The difference is the adjustment value for the meter.
a. Use the or
b. Use the arrow keys to enter the adjustment value for 85 °C.
Confirm.
c. Select Save changes and confirm.
7.7 Change the stirring settings
The stirring speed can be changed during calibration and during a
measurement.
1. Use the or to change the stirring speed during calibration and
during a measurement.
7.7.1 Turn the stirrer on or off
The stirrer 1 works with Channel 1 and 2 (Stirrer 1). A second stirrer can
be connected to channel 2 (Stirrer 2). For the stirrer 2 activation refer to
the following steps.
1. From the main menu use the
with .
2. Use the or to select Stirrer N.2 and confirm with
3. Use the or to select YES to turn the stirrer 2 on.
Note: Select NO to turn the stirrer 2 off.
7.8 Change the temperature units
The temperature units can be changed to Celsius or Fahrenheit.
1. From the main menu use the
2. Use the or to select Temperature units and confirm.
3. Use the or to select between Celsius or Fahrenheit and confirm.
to select 85 °C and confirm.
or to select SYSTEM. Confirm
or to select SYSTEM. Confirm.
.