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Setting Up
Connecting the Gas Lines
The OX-TRAN Model 2/12 R has two gas inlets, one for connecting the Test Gas (oxygen) supply and the
other for connecting the Carrier Gas (nitrogen) supply. These compression fittings are intended for use with
1/8" copper tubing. Refer to Figure 2-3 and Figure 2-4 for the location of these fittings and an example of
plumbing system diagram.
The optional Starter Kit (051-939) contains 50 feet (14 meters) of tubing in addition to extra compression
nuts, ferrules and grease.
Follow these steps to connect the Carrier Gas supply lines:
1.
Remove the brass plug from the Carrier Gas fitting on the instrument back panel. Save the plug it
will be needed later.
2.
Cut a piece of tubing approximately 3 inches in length (8 cm).
3.
Cut a piece of tubing approximately 6 inches in length (15 cm)
4.
Cut a piece of tubing approximately 10 inches in length (25 cm).
5.
Remove the nuts and ferrules that came with the Brass Filter and a Regulator Tee.
6.
Apply a thin coating of Apiezon grease to four of the brass compression ferrules.
7.
Apply a thin coating of Apiezon grease to the ferrules that came with the oxygen scrubber.
8.
Connect the Carrier Gas fitting on the instrument back panel to the Brass Filter (051-791) using the
3 inch length of tubing and two nuts and ferrules. The arrow on the Filter must point towards the tube
connected to the instrument back panel.
9.
Connect the 10 inch length of tubing to the input of the Brass Filter using a nut and ferrule.
10.
Connect the end of the 10 inch tube to the output fitting on the oxygen scrubber using one of the
nuts and ferrules that came with the scrubber. The arrow on the oxygen scrubber must point towards the
Brass Filter.
11.
Connect the 6 inch length of tubing to the input fitting on the oxygen scrubber using the nuts and
ferrules that came with the scrubber.
12.
Connect the other end of the 6 inch length of tube to the output fitting of a regulator tee using a nut
and ferrule.
13.
Apply a thin coating of Apiezon grease to two compression ferrules.
14.
Cut a piece of tubing to connect the regulator tee to the Carrier Gas cylinder regulator.
15.
Connect the Carrier Gas regulator tee to the Carrier Gas (Nitrogen) supply regulator using two nuts
and ferrules.
16.
If there are additional instruments to be connected, repeat steps 2 - 12 and 17 - 19 for each
instrument.
17.
Apply a thin coating of Apiezon grease to two compression ferrules.
18.
Cut a piece of tubing to connect the regulator tee on the previous instrument to the regulator tee on
the next instrument.
19.
Connect the previous Carrier Gas regulator tee to the next Carrier Gas regulator tee using two nuts
and ferrules.
20.
Using the plug removed in step one, cap the open port on the last regulator tee assembly.
Caution:
Before proceeding verify that the Carrier Gas and Test Gas inlets on each instrument are
connected to the appropriate gas supply. If the Carrier Gas inlet is connected to the oxygen
supply, the oxygen sensor will be damaged and replacement will be required.
2-6
OX-TRAN Model 2/12 R Operator's Manual
Revision L
MOCON, Inc.
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