INFICON 3000 Micro GC Gas Analyzer Reference Guide - Manual (Page 97)

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3000 Micro GC Guides
3000 Micro GC Guide 21
Testing Instrument Flow Rates
Table 21-1 Test instrument flow rates
Step Description
1 Instrument flow rates can be tested for diagnostic purposes. Prior to testing, create a test
method in EZ IQ.
Click File >> Method >> Create.
2 Click Method >> Instrument Setup.
3 In the Instrument Setup window, set the Column Head Pressure and Post Column Pressure
to 20 PSI.
4 Download the method by clicking Control >> Download.
5 Using a flowmeter, measure the flow rates from the Analytical and Reference column vents,
located on the back of 3000 Micro GC. Male luer locks are provided in the instrument ship kit.
The female end will attach directly onto the column vents. The ship kit also contains a 1/16 in.
piece of polyurethane tubing, which can be attached to the male end.
Analytical flow rate should be 1.0 +/- 0.5 mL/min.
Reference flow rate should be 0.6 +/- 0.4 mL/min.
NOTE: Flow rates will vary depending on column length, internal diameter, and film thickness.
6 If no flowmeter is available, a rudimentary test can be performed to verify the presence of flow:
1 Attach a male luer lock to the piece of 1/16 inch polyurethane tubing, provided in the
instrument shipping kit.
2 Attach the female end of the luer lock to one of the column vents on the back of the
instrument. Set the open end of the tubing in a container of water. Bubbles indicate flow.
3 If threre is no flow from either or both the Analytical and Reference ports, contact INFICON.