Series 100 HFAD Gas Chromatograph

GOW-MAC Instrument Company, a leading manufacturer of gas analysis instrumentation and compressed gas handling equipment, offers the Series 100 HFAD Gas Chromatograph with High Frequency Argon Discharge Ionization Detector (ADD). This analyzer is designed to analyze for impurities in argon down to the ppb range.

The sample gas (argon) is passed through a chromatography column which separates the impurities such as a H₂, N₂, O₂, CH₄ and CO. The gas is subjected to an electromagnetic field, which causes it to resonate. The resulting luminance is monitored by a light dependent resistor (LDR). As the sample component elutes from the column the light intensity is altered. The output from the LDR is converted to a mV signal and is measured on a computing integrator or GC software. The peak area as charted by the recording device is proportional to the concentration of each component in the sample. Sensitivities down to 20 ppb can be measured.

The Series 100 HFAD is available with several options, such as 4 – 20 mA output, auto zero, and bench or 19" rack mount.

GOW-MAC Instrument Co., 277 Brodhead Road, Bethlehem, PA 18017. Tel: 610-954-9000; Fax: 610-954-0599.