Metrohm 797 VA Computrace User Manual

Page 24

2 Installation

797 VA Computrace / Hardware-Manual 8.797.8001EN

55 Threaded opening

for dummy stopper 45 (6.1446.040)

56 Threaded opening

for dummy stopper 44 (6.1446.040)

57 Pipetting opening

for the manual addition of solutions,
closed with stopper 4 (6.2709.080)

58 Opening

in operation with MME:
for Multi-Mode Electrode 21
(6.1246.020)
in operation with RDE:
for 6.2709.040 Stopper

59 Threaded opening

for FEP tubing 22 (6.1805.180, already
permanently attached); inert gas supply
to measuring vessel 7

60 Threaded opening

for dummy stopper 25 (6.1446.040)

61 Opening

for reference electrode 26 (Ag/AgCl
reference system and 6.1245.010
Electrolyte vessel)

62 Threaded opening

for nipple 27 (6.2730.030) with dummy
stopper or 4-way microtip 30
(6.1824.000)

63 Opening

in operation with MME:
for stirrer 28 (6.1204.200)
in operation with RDE:
for rotating disk electrode, comprising
drive shaft 99 (6.1204.210) and elec-
trode tip 98 (6.1204.XXX)

64 Threaded opening

for FEP tubing 40 ((6.1805.180, already
permanently attached); inert gas supply
for tapping mechanism

65 Threaded opening

for FEP tubing 39 (6.1805.090, already
perm. attached); inert gas lead-off

66 Threaded opening

for FEP tubing 22 (6.1805.180, already
permanently attached); inert gas supply
from gas wash bottle 6 to measuring
vessel 7

67 Threaded opening

for FEP tubing 36 (6.1805.040, already
permanently attached); inert gas supply
to gas wash bottle 6

68 Opening

for feed-through of tubing connections
of 4-way microtip 30 (6.1824.000)

69 Threaded opening

for FEP tubing (6.1805.180); optional
waste solution lead-off

70 Threaded opening

for FEP tubing 38 (6.1805.090, already
permanently attached); optional waste
solution supply from gas wash bottle to
waste

5 Install reference electrode

• Insert reference electrode 26 in opening 61.
• Attach electrode cable 31 (RE) to reference electrode: push cable lug

under the screw and then tighten screw firmly.

• Turn reference electrode so that the electrode cable points to the rear and

not to the side (in the latter position it may become kinked and damaged
when cover 2 is closed).