Gow-Mac 580 series, Руководство по эксплуатации

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Series 580 TCD Gas Chromatograph
September 2017, Rev. 5 23
L. Setting Flows For A Gas Sample Valve and Series/By-pass Column Switching Valve for Analysis
of CH
4
, CO
2
, C
2
H
6
, H
2
O, H
2
, O
2
/Air, N
2
, CO
If this instrument is equipped with a Series/By-pass Valve (installed on the “A” side) use the
following instructions for setting the fl ow rates.
1. Position S/B-P Valve in “Series” position.
2. Use carrier gas needle valve “A” to adjust fl ow to 30 mL/min. for 1/8” column, 60 mL/min. for
1/4” column.
3. Switch S/B-P Valve to “B-P” position.
4. Use needle valve marked “restrictor” (found in either the front or back of the Accessory
Housing) to equal fl ow rate set in Series position, 30 mL/min. or 60 mL/min.
NOTE
)
Flows in series and by-pass position should be equal to each
other as well as equal to “B” side setting.
When setting fl ows on S/B-P Valve allow suffi cient time for fl ows to stabilize. (2 - 5 minutes)
M. Installation Check List
1. Electrical
_____ Correct voltage and frequency.
_____ Interconnecting cables to additional instruments installed.
_____ Power “OFF”
2. Pneumatic
_____ Required gas supplies hooked up
_____ Cylinders chained or strapped to wall or table. Regulators set for suggested delivery
pressure (30 psig). Connecting lines and fi ttings leak checked.
_____ Flow rates checked and adjusted.