MultiLab 4010-1
Dissolved oxygen
ba76141e03
03/2014
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Criteria for a stable
measured value
The
Stability control
function checks whether the measured values are stable
within the monitored time interval.
The minimum duration until a measured value is assessed as stable is the mon-
itored time interval. The actual duration is mostly longer.
7.1.2 Measuring the temperature
For reproducible D.O. measurements, it is essential to measure the tempera-
ture of the test sample.
IDS D.O. sensors measure the temperature with a temperature sensor inte-
grated in the IDS sensor.
7.2
Calibration
7.2.1 Why calibrate?
D.O. sensors age. This changes the zero point and slope of the IDS D.O.
sensor. As a result, an inexact measured value is displayed. Calibration deter-
mines and stores the current values of the zero point and slope.
7.2.2 When to calibrate?
When the calibration interval has expired
When your accuracy requirements are especially high
Routinely within the framework of the company quality assurance
7.2.3 Calibration procedures
The MultiLab 4010-1 provides 2 calibration procedures:
Calibration in water vapor-saturated air.
Calibration via a comparison measurement (e.g. Winkler titration according
to DIN EN 25813 or ISO 5813). At the same time, the relative slope is
adapted to the comparison measurement by a correction factor. When the
correction factor is active, the
[Factor]
indicator appears in the measuring
screen.
Calibration can be carried out either as a 1-point calibration or 2-point calibra-
tion procedure.
Measured parame-
ter
Time interval
Stability in the time interval
D.O. concentration
20 seconds
∆
: better than 0.03 mg/l
D.O. saturation
20 seconds
∆
: better than 0.4 %
Temperature
15 seconds
∆
: Better than 0.5 °C
Summary of Contents for YSI MultiLab 4010P-1
Page 10: ...Overview MultiLab 4010 1 10 ba76141e03 03 2014...
Page 82: ...Transmitting data USB interfaces MultiLab 4010 1 82 ba76141e03 03 2014...
Page 101: ...MultiLab 4010 1 Index ba76141e03 03 2014 101...
Page 106: ...Contact Information MultiLab 4010 1 106 ba76141e03 03 2014...
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