Metrohm 796 Titroprocessor - Manual (Page 186)

8.9 CAL
796 Titroprocessor, Instructions for use 180 180
This measured value drift control can be switched off
('off'). However, this is not recommended for correct
calibration.
Meas. input
Sensor connection sockets
(A1, A2, Adiff, B1, B2, Bdiff)
The measuring inputs A1, A2 and Apol are located on
the rear panel of the instrument in the measuring group
Sensors A. Adiff stands for the measuring amplifier
switch on the measurement inputs
A1, A2 and Ref.
If a second measuring group ( Sensors B) is present
then the addresses B1, B2 , Bpol and Bdiff can be
similarly used.
Equilibr.time
Max. delay period before measurement acceptance
0.1…9999 s | auto | off
The whole delay period for measurement acceptance
becomes effective when, with switched-on drift control
(see measurement drift above), the preset value for the
drift is not undercut. Otherwise the measurement will be
accepted when measurement drift is reached.
The whole delay period will also be allowed to elapse if
the drift control is switched off.
The equilibrium time can be switched off. In this case
only the measurement drift is decisive for the measure-
ment acceptance.
With the setting 'Equilibr.time auto' the Titro-
processor will use an equilibrium time which is suitable
for the preset measurement drift value. It is calculated
according to the following equation:
Equilibr time in s
drift mV
. ( )
/ ( / min) .
=
+
+
150
0 01
5
For the standard setting 2 mV this results in an equilib-
rium time of 110 s.
Temperature
Temperature setting or measuring mode
-170…25.0…500°C | auto | off
The temperature can be automatically determined dur-
ing a measurement with the aid of a Pt100/Pt1000 sen-
sor or a combined electrode with built-in temperature
sensor. It is required for automatic pH correction.
numerical manual input
auto automatic measurement during cali-
bration
off no temperature correction