Owner manual

5.7 Program instructions
746 VA Trace Analyzer / 747 VA Stand
5-228
DOS/M Page: O, S Stand: M Abbreviation: DOS/
Instructions t/s Main parameters Auxiliary parameters
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## .. DOS/M ..... V.added ........mL
Function Auxiliary solution has been added to the measuring vessel (MEAS).
Parameter Range; Default value / Meaning
V.added 0.010...999.99 mL; 1.000 mL
Solution volume that has been added
Volume of the auxiliary solution that has been added to the measuring
vessel.
Description The DOS/M instruction is used when an auxiliary solution (e.g. supporting
electrolyte) has already been added to the measuring vessel (MEAS)
before the start of the program and defines the initial volume in the
measuring vessel.
The DOS/M instruction is also needed when an auxiliary solution should
be added automatically using a dosing unit (e.g. 665 Dosimat or 725
Dosimat) which, in contrast to the 685 Dosimat or 700 Dosino, can not
be directly controlled by the 746 VA Trace Analyzer. In this case, the
addition must be initiated via the RS232 interface (using the SEND>RS#
instructions) or via the remote interface (using the SETCTRL instruction)
and then confirmed with the DOS/M instruction.
Comments The DOS/M instruction can not be used in operation with the 695
Autosampler.
Example Addition of a auxiliary solution with the 665 Dosimat via the remote
interface:
746 connection: Connection "Control Lines" 2323 (see section 3.13)
665 connection: Connection 88 for external dosing contact
(see 665 Instructions for Use)
Connecting cable: Cable with 25-pin connector, pin 5 (output 1) connected to red
banana plug, pin 25 (0 V) to black banana plug
Setting on 665: "DIS R" mode with fixed dispensing volume V.add
Program:
:
SETCTRL *******1 Start of dispensing at 665 Dosimat
: by setting control line 1 active
NOP xxx s Entry of a wait time until dispensing
: is at an end
SETCTRL *******0 Resetting of control line 1
DOS/M Auxiliary solution has been added
: to the measuring vessel
see also DOS>M, DOS>A, DOS>F, PDOS>M, SDOS>M, SDOS>A, SDOS>F