Metrohm 765 Dosimat - Manual (Page 7)

Overview
765 Dosimat
3
Rear view of instrument:
6 Data inputs and outputs
Via data transfer interface according to RS 232 C including optional analogue
output. For 25-pin D subminiature plug.
Important: Note plug positions, page 47!
Plug cables in and out only if the instruments are switched off.
7 Data inputs and outputs
Via data transfer interface according to RS 232 C. For 8-pin plug.
(For details see page 47)
Plug cables in and out only if the instruments are switched off.
8 Connection for keyboard
For details of operation with keyboard 6.2149.000 see page 4ff.
9 Power connection
In power supply systems, in which strong HF interferences (transients) are su-
perimposed on the power voltage, the 765 Dosimat should be connected via an
additional power line filter, e.g. METROHM 615 model.
The main cables supplied with the instrument are three-core and equipped with
a plug with an earthing pin. If a different plug has to be fitted, the yellow/green
lead must be connected to the protective earth. Each break in the earthing inside
or outside the instrument can make it a hazard.
When the instrument is opened or if parts of it are removed, certain components
may be live if the instrument is connected to the power line. The power cable
must therefore always be unplugged when certain adjustments are made or
parts replaced.
10 Power switch
Switching on and off Dosimat. The 765 Dosimat is equipped with a non-volatile
memory, i.e. set parameters remain in the working memory if the Dosimat is
switched off and on.
11 Earthing socket
The 765 Dosimat must be grounded correctly and effectively, if necessary
through the separate earthing socket.
12 Connection for stirrer
In general a Magnetic Stirrer (forms a complete titrating stand). Other stirrers
may be connected as well, e.g. a METROHM Rod Stirrer. Supply voltage output:
+9 V DC (I # 200 mA).
13 Connection for external dosing contact
E.g. 6.2107.000 push button cable.
14 Indication of power voltage
Make sure the current has been adapted correctly before Dosimat is switched
on.
15 Identification plate
Indication of model, series and serial number.