Metrohm 855 Robotic Titrosampler User Manual download pdf (Page 53)

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6 Appendix

855 Robotic Titrosampler

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Assigment Pin No. Assigment Pin No.

Input 7 12 Output 7 2

0 volts / GND 14 Output 8 6

+5 volts 15 Output 9 7

0 volts / GND 25 Output 10 8

Output 11 13

Output 12 19

Output 13 20

6.4 Stirring rate

The stirring rate can be adjusted in steps of –15 to +15.

The approximate rotational speed can be calculated with the following for-

mula:

Rotational speed/min (r/min) = 125 · stirring rate

Example:

Stirring rate set: 8

Rotational speed in rpm = 125 · 8 = 1000

2000

1500

1000

500

-15 -10 -5 0 5 10 15

r/min

Figure 36 Rotational speed depending on stirring rate

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 84 85

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Metrohm 855 Robotic Titrosampler User Manual Page 53