OHAUS ST300D-B Manuel D'instructions page 11

STARTER 300D Portable DO Meter
3 SETUP
3.1 Setting barometric pressure
For calibration and measurements, the actual barometric pressure is very important, since it
influences the dissolved oxygen value. Be sure to enter the CORRECT barometric pressure
before measurement and calibration.
3.1.1
Setting the barometric pressure unit
The meter can display the following units: mbar (milibar), hPa (hectopascal) and mmHg
(millimeter mercury).
Power the meter on by pressing

Press and hold button-

current unit of barometric pressure displays.
Press button-

Press button-

3.1.2
Setting the barometric pressure value
After the setting of barometric pressure unit, the value of barometric pressure displays.
Press button-

Press button-

measurement screen.
3.2 Setting salinity value
Since salinity has an influence on the dissolved oxygen value, it is important to enter the correct
salinity value. The meter can compensate salinity for measurements in solutions with salinity from
0 to 50 ppt. The default value for salinity is 0.0 ppt, which can be changed by the following
procedure:
After the setting of barometric pressure value, the salinity value is displayed.
Press button-

Press button-

screen.
Normally seawater salinity is 35ppt, which means 35g of salt per 1000g seawater.
for 3 seconds until setup icon
or button- to choose the unit you want.
to confirm your selection or
or button- to adjust the value.
to confirm your selection or press button-
or button- to adjust the salinity value.
to confirm the value or press button-
appears on the display. The
to return to the measurement screen.
to return to the measurement
EN 7
-
to return to the