Metrohm 797 VA Computrace - Manual (Page 26)

2 Installation
797 VA Computrace / Hardware-Manual 8.797.8001EN
18
1 Fill gas wash bottle
• Unscrew gas wash bottle 6 from measuring head arm 23.
• Fill gas wash bottle half full with dist. H
2
O (for long-term measurements
with supporting electrolytes such as Acetic acid / Acetate buffer or Ammo-
nia / Ammonium chloride buffer, fill with supporting electrolyte; for meas-
urements in organic solvents fill with the used solvent).
• Screw gas wash bottle back on measuring head arm.
2 Connect inert gas supply
• Attach one end of 6.1801.080 PVC tubing to connection 11 of the 797 VA
Computrace Stand.
• Attach the other end of the 6.1801.080 PVC tubing to connection of the
inert gas bottle.
• Set inert gas pressure at gas bottle using the reducing valve to
p = 1 ± 0.2 bar.
• Open gas supply line at gas bottle.
3 Connect inert gas lead-off (option)
• Attach a length of suitable tubing (e.g. Metrohm 6.1805.030, length
150 cm) to connection 9 for inert gas lead-off.
• Route the other end of the lead-off tubing to a fume cupboard.