Model ARS-201c
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 For: Hewlett Packard 
         gas chromatographs, model 5830 & 5840,
         liquid chromatograhs, models  1080, 1082 & 1084 
         GC/MS model 5985.
 Features: Single or dual detector output.
           Accommodates all possible detector configurations. 
           Two programmable control relays. 
           Selectable attenuation for very concentrated samples .  
           while retaining 20-bit precision.