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7 stirrer – Metrohm 757 VA Computrace User Manual

Page 43

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3.7 Stirrer

757 VA Computrace – Hardware

39

39

112

115

116

117

112

113

114

Fig. 14: Construction of the auxiliary electrode

3.7 Stirrer

The complete stirrer comprises two parts (see also Fig. 4):

6.1246.010 Drive shaft (24)
6.1204.090 Stirrer tip (42)

The startup procedure for the stirrer is as follows:

1 Assemble stirrer

• Screw stirrer tip 42 firmly to drive shaft 24.

2 Insert stirrer in 757 VA Computrace Stand and connect

• Insert complete stirrer in opening 60 of the measuring head 20 as far as it

will go (see Fig. 6).

• Stretch drive belt 28 between drive wheel 31 and drive shaft 24 of the

stirrer (see Fig. 6).

39 Auxiliary electrode

112 Electrical connection for

cable "AE"

113 Pt Auxiliary electrode

(6.0343.000)

114 Pt tip

(permanently attached)

115 Electrode holder

(6.1241.020)

116 Locking ring

117 Glassy carbon tip

(6.1247.000)