Metrohm 763 PVC Thermomat Manual - Manual (Page 17)

2 Installation
763 PVC Thermomat
10
2.2 Attaching the accessories
2.2.1 Accessories for external gas supply
Nitrogen (N
2
) is required for external gas supply to the 763 PVC Ther-
momat. The following accessories must be mounted on the rear panel
of the PVC Thermomat:
1 Fitting the connecting tubing
• Screw one end of connecting tubing 6.1805.030 (150 cm)
onto connection 18 18 "N
2
in" on the rear panel of the PVC
Thermomat (see Fig. 3).
• Screw the 6.1808.020 connection piece onto the other end of
connecting tubing 6.1805.030.
2 Connect up gas supply
• Attach the gas supply from the cylinder containing nitrogen to
the tubing nozzle of 6.1808.020 Connection piece.
• Set gas pressure at the nitrogen cylinder to ca. 1.5 bar using
the reducing valve.
2.2.2 Reaction and measuring vessels
Fig. 4 shows the details of how the accessories for measuring the ther-
mal stability are to be attached and connected to each other. Proceed
as follows:
1 Fitting the measuring vessel cover
• Insert PTFE tube 27 27 from above into opening 24 24 "In" of
measuring vessel cover 55.
• Screw connection piece 22 22 into opening 24 24 of measuring
vessel cover 55.
2 Inserting the measuring vessel in the instrument
• Fill 60 mL dist. water into measuring vessel 44.
• Place measuring vessel cover 55 on measuring vessel 44.
• Insert measuring vessel 44 with attached measuring vessel
cover 55 into the opening provided for it on the 763 PVC
Thermomat and connect measuring vessel cover 55 with con-
nection plug 26 26 to electrode connection 20 20 (see Fig. 3).
3 Fitting the reaction vessel
• Insert gas inlet tube 32 32 from below into connection 34 34 of
reaction vessel cover 22.
• Push sealing ring 33 33 over the upper end of gas inlet tube 32 32.
• Screw connection nipple 30 30 loosely into connection 34 34 and
press gas inlet tube 32 32 against connection nipple 30 30 from
below; then fix gas inlet tube 32 32 to reaction vessel cover 22 by
firmly tightening connection nipple 30 30.