Metrohm IC Net 2.3 Instrukcja Użytkownika Pobierz pdf (Strona 271)

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101

6.28 844 UV/VIS Compact IC

IC Net 2.3

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Detector settings

On the tab Detector settings measuring settings are defined.

Detector settings Settings for UV/VIS detector.

VIS lamp Display of the voltage of the VIS lamp.

T int, ms

Integration time.

Entry range: 10 ... 254 ms

T out, s Measuring time per data point.

Entry range: 0.05 ... 2.00 s

Data rate Effective measuring time per data point.

The Data rate is the particular whole number

multiple of the value T int that is closest to

the value T out.

The measurement of a data point is explained by using an

example:

Set values: T int = 15 ms, T out = 0.1 s

The

calculated Data rate is 105 ms (the particular multiple of T

int

that is closest to the value T out; in our example 7 times 15

ms). This means that the integration will be carried out 7 times

(each time for 15 ms) and then averaged to give a data point.

<Optimize> Optimizes T int and adjusts the VIS lamp.

It should be done

• after exchanging a lamp (UV or VIS)

• if parts of the intensity spectrum are in the

overload ( > 60'000 , peaks cut )

• if the maximum of the intensity spectrum of

dist. water is too low (below 33'000)

Before clicking <Optimize>, the flow-trough

cell should be rinsed and filled with dist.

water. There must be no air bubbles in the

flow-trough cell when clicking

<Optimize>.

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Metrohm IC Net 2.3 Instrukcja Użytkownika Strona 271

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