Metrohm tiamo 1.1 Manual - Manual (Page 468)

440 Method
Control parameters
Command name
25 characters, [ STAT U # ]
Name of the command.
Control point
Control point at
-2000.0 ... 2000.0 mV, [ aus ] (Titrando),
-2000 ... 2000 mV, [ aus ] (Titrino)
Definition of the current value to be controlled.
Titration rate
Titration rate
50 µL/min, [ 100 µL/min ], 500 µL/min, user
Three predefined sets of parameters can be selected for the titration rate:
50 µL/min , 100 µL/min and 500 µL/min . For these sets the parameters for
the Control are not displayed. In order to edit these parameters the value
user must be selected.
Control
(only visible for Titration rate = user )
Dynamics
0.1 ... [ 60.0 ] ... 2000.0 mV, off (Titrando)
1 ... [ 60 ] ... 2000 mV, off (Titrino)
Dynamics defines the measured value range before the given endpoint.
This parameter has an important influence on the titration rate and with it on
the accuracy. Within the control range the steps which are added are con-
trolled by the
Min. rate . The nearer the endpoint the slower the dosing takes
place until the Min. rate has been reached. Outside the range the dosing
takes place with Max. rate ) (see Control range).
Max. rate
0.01 ... [ 0.25 (50 µL/min) ] ... [ 0.75 (100 µL/min) ] ... [ 2.00 (500 µL/min) ] ...
166.00 mL/min, maximum
(Titrando)
0.01 ... [ 0.25 (50 µL/min) ] ... [ 0.75 (100 µL/min) ] ... [ 2.00 (500 µL/min) ] ...
150.00 mL/min, maximum
(Titrino)
Speed of addition outside the control range. The maximum dosing speed
depends on the cylinder volume of the exchange unit or dosing unit used.
Rule of thumb for the maximum rate:
Max. rate in mL/min = 0.005 • Ex-
pected rate of reaction in µL/min