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Section 3. Installation
Figure 6. Gas Line Connection to C3
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Gas Inlet Connection
The C3 package contains 0.25" OD tygon tubing and a gas line fitting. One end of the gas
line fitting is barbed to fit inside the tygon tubing. Push the barbed end into the tubing. The
other end of the fitting connects to the GAS INLET port on the rear panel of the C3. To attach
the line, simply push the connector into the port. A retaining clip will snap into place. The
open end of the tygon tube is connected to a regulated gas supply. The inlet gas pressure
must not exceed 5 psi. To remove the tube from the C3, squeeze the retaining ring tab
against the connector, then pull the tube and connector away from the C3.
GAS INLET
Cell Placement
The C3 is designed for easy cell replacement and to accommodate both regular cells and
water-jacketed cells. The cell is held in place by the stir motor. Follow these instructions for
initial cell placement:
1.
Pivot the stir motor to the right.
2.
Bring the cell up from underneath, around the electrodes, and seat on the cell top.
3.
Pivot the stir motor back under the cell.
4.
If required, the cell top height can be adjusted by loosening the cell height
adjustment knob, sliding the cell top assembly to the desired position, and
tightening the knob.
5.
Four 0.25" holes are in the cell top. These holes are for the working electrode,
reference electrode, auxiliary electrode, and standard addition port. Place the
electrodes and port plug in the holes which are the most convenient.
Purging/Blanketing Lines
The C3 has the ability to purge or blanket the sample solution with an inert gas. The purge
removes oxygen by bubbling an inert gas, typically nitrogen or argon, through the solution.
The blanketing function is to maintain an inert atmosphere above the sample to keep oxygen
from re-entering the sample solution.
The purge/blanket lines are the two plastic tubes coming out of the cell top support block.
These two lines should be pressed into the Teflon cell top. The blanket line should extend to
just beyond the bottom of the cell top. The depth of the purge tube should be near the
bottom of the cell vial.
5 psi max
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