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Metrohm 799 GPT Titrino User Manual

Page 24

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2.6 Parameters, key

799 GPT Titrino

20

Titration sequence of DET and MET

After the start, the activate pulse is outputted and the stir-

rer switched on.

The start delay time is waited off.

The sample identifications and the sample size are re-

quested.

The start volume is dispensed (no meas.value acquisition)

and the pause is waited off.

During the titration the volume increments are dispensed

and after each increment a measured value is acquired.

Meas.values are either acquired drift controlled ("equilib-

rium titration") or a after a fixed waiting time. If you have

not intentionally changed the equilibration time, it is calcu-

lated according to the formula:

equilibr.time (in s)

5

0.01

Drift

150

+

+

=

The criterion (drift or equilibration time) which is first met

applies. This avoids "infinite" titrations. If the parameter

"signal drift" is set "OFF", the measured values are ac-

quired after a fixed equilibration time.

The titration is terminated according to the first criterion

which is met.

The stirrer is switched off.

Evaluations and calculations are carried out.

Data are outputted.

(Activate pulse)

(Stirrer ON)

(Start delay)

(Start conditions)

(Request ident.)

(Request smpl size)

Titration:

Dispense increments

Acquire meas.values

Stop conditions

Calculations

(Stirrer OFF)

Data output