STARTER 400D Portable DO Meter EN-11
Once you have completed your 1-point calibration, you have 3 options new:
o
Press button-
to finish 1-point calibration then return to measurement screen.
o
Press button-
to reject calibration and return to measurement screen.
o
Press button-
to complete a 2-point calibration (after preparing the zero
oxygen solution and putting STDO21 into it).
4.1.3
Performing 2-point calibration
Perform the 1-point calibration.
Place the probe in the zero oxygen solution and press button-
.
The meter reaches the endpoint automatically. 0% will display then return to measurement
screen.
Pressing and holding button-
will display the calibration data.
4.2
Sample measurement
Dissolved oxygen readings can display unit of mg/L or %.
Place the DO probe in the sample. Press
to start the measurement.
When the meter reaches endpoint, the measurement reading will freeze on the screen.
4.3
Temperature measurement
For better accuracy, we recommend the use of the temperature probe. If a temperature probe is
used,
ATC
and the sample temperature are displayed.
STDO21 has a built-in temperature probe.
4.4
Barometer pressure measurement
Barometric pressure influences the DO value.
STARTER 400D
has a built-in barometric pressure sensor which can measure the barometric
pressure automatically. This meter uses barometric pressure unit
KPa
(kilopascal).
