Metrohm 726 Titroprocessor - Manual (Page 136)

8.2 DET
726 Titroprocessor, Instructions for use 130 130
Meas. input
Sensor input
(A1,A2, Apol, Adiff, B1, B2, Bpol, Bdiff)
The measuring inputs A1, A2 and Apol are located on the
back of the Titroprocessor, integrated in the sensors A
measuring interface. Adiff stands for the differential ampli-
fier circuit on measuring inputs A1, A2 and Ref.
If there is a second measuring interface (sensors B), ad-
dresses B1, B2 , Bpol and Bdiff can also be used analo-
gously. Only feasible sensor addresses can be selected in
line with the measuring quantity of the DET mode :
e. g. with DET_IPOL* only Apol or Bpol.
Dos. drive
Dosing drive address
(A1…A4, B1…B4, C1…C4)
The ports Dos. A1…Dos. A4 on the back of the unit are
addressed A1…A4.
Other drives connected to the 'External Bus' with a Dosi-
mat Interface 729, are addressed B1…B4 (Dosimat Inter-
face 1, EBus address 1) resp. C1…C4 (Dosimat Interface
2, EBus address 2).
8.2.1 [ * Param ] Specific parameters for DET modes
The specific parameters of the corresponding DET mode will be found un-
der the softkey [* Param ].
ЪДДД DET_PH* Parameters ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿
³ ³
³ Start conditions ³
³ Volume off Meas.val. pH off ³
³ Slope off pH/mL ³
³ Dos.rate max mL/min Pause 0 s ³
³ ³
³ Titration conditions ³
³ Adjustment medium Time recording on ³
³ Temperature 25.0 øC ³
³ ³
³ Stop conditions ³
³ Volume absolute Meas.val. pH off ³
³ Size 99.99 mL EP# 9 ³
³ Fill. rate max mL/min Stop time off s ³
³ Mpt. overflow on ³
³ ³
АДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД QUIT ÄÙ
Start conditions
This is where the conditions which have to be fulfilled before titration can
begin are defined. Titration reagents can be pre-dosed in a manner of dif-
ferent ways.
The addition of a defined start volume (absolute or relative volume as a
function of the sample size) can be monitored optionally. If values are en-
tered for Meas.val. and/or Slope, the addition of the defined start vol-
ume will be discontinued as soon as these threshold values are reached.
Initial dosing without a defined start volume can be discontinued by moni-
toring the measured value or signal slope (pH/mL resp. mV/mL).