Metrohm 796 Titroprocessor - Manual (Page 162)

8.5 SEC
796 Titroprocessor, Instructions for use 156 156
* ITD= Intermediate titration duration, time between conditioning switch-
off and the start of the next titration in s.
MD= Mode duration, sample titration time in s.
Assignment parameters for SEC modes:
The assignment parameters (Comments, Reagent … etc.) for the SEC
modes are the same as those of the DET modes, see page 130f.
8.5.1 Specific parameters for SEC modes [ * Param ]
The specific parameters for the respective SEC mode can be found under
the softkey [* Param ].
ЪДДД SEC_PH* Parameters ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿
³ ³
³ Titration conditions ³
³ Direction auto Temperature 25.0 øC ³
³ End-point pH ³
³ Adjustment medium ³
³ ³
³ Fill. rate max mL/min ³
АДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД QUIT ÄÙ
Titration conditions
These are the actual titration parameters which control the measurement re-
cording and the dosing behavior during the titration itself.
Direction
Control direction
pos. | neg. | auto
The control direction must be entered for titration control in
the SEC mode. Normally the 'auto' setting should be used.
The control direction is then determined from the initial
measured value and preset target endpoint. The control
direction can also be fixed in advance. The possible set-
tings 'pos.' and 'neg.' refer to the numerical measured
value alterations.
End-point
Target endpoint
for SEC_PH* pH -20…20
for SEC_U*, SEC_IPOL* -2000…2000 mV
for SEC_UPOL* -200 …200 µA
The target endpoint defines the measured value which the
conditioning control is aiming for. Correct calibration of the
sensor used is highly recommended.