Metrohm 916 Ti-Touch - Manual (Page 313)

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28 Parameters
916 Ti-Touch
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Selection maximum
Default value maximum
maximum
The maximum dosing rate depends on the cylinder volume (see Chap-
ter 31, page 406).
Signal drift
Maximum permissible drift for the measured value acceptance, i.e. maxi-
mum change of the measured value per minute. This type of titration is
often referred to as equilibrium titration. For this value, a suitable maxi-
mum waiting time is automatically calculated except you already have
modified this waiting time.
NOTE
A constant measured value is often only reached after a certain time, as
mixing and the reaction itself require a certain time. The response time
of an electrode can also increase with time, i.e. reaching a constant
measured value takes longer and longer. Drift-controlled measured
value acceptance is particularly advisable in such cases, as the measured
values are only accepted when equilibrium has almost been reached.
Measuring mode pH, U and Ipol:
Input range
0.1 - 999.0 mV/min
Default value 50.0 mV/min
Selection off
off
Measured value acceptance will take place after the maximum waiting
time has elapsed. This can be useful when the titration reaction pro-
ceeds slowly or the electrode is slow to respond.
Measuring mode Upol:
Input range
0.01 - 99.90 µA/min
Default value 50.00 µA/min
Selection off
off
Measured value acceptance will take place after the maximum waiting
time has elapsed. This can be useful when the titration reaction pro-
ceeds slowly or the electrode is slow to respond.
Min. waiting time
The measured value is not accepted until the minimum waiting time has
elapsed, even if the signal drift has already been reached. The minimum
waiting time is only important for drift-controlled measurements.