DescriptionWe used our line operated Portable Gas Chromatograph (GC-311- 115VAC) with a Photoionization Detector (PID) for many years at hazardous waste sites and for industrial hygiene surveys of volatile hydrocarbons at ppm and ppb levels. In order to bring our Model GC312 directly to the field, we needed a longer battery life. We have developed a low mass capillary column which required significantly less power, improved the insulation, and used a lower power PC and a lower power color monitor. Now we can operate the GC for 4-6 hours at 75 degrees C or for 8-10 hours at 5-10 degrees C above the ambient temperature. This allows us to analyze volatile compounds like vinyl chloride monomer (gas), benzene (BP 78 degrees C) at 30-40 degrees C or non volatile compounds like 1 vinyl 2 pyrrolidone (BP 148 degrees C), ethylbutyric acid (BP 195 degrees C) and, Napthalene (BP 218 degrees C) or other PAH’s at 75 degrees C to detect ppm to ppb levels. We can operate the GC at temperatures up to 150 degrees C but above 75 degrees C, the GC has to be line powered. Benzene at refinery or chemical plant fence lines can be detected at low ppb levels with an analysis time of < 30 seconds. A complete BTEX analysis (benzene through o-xylene) can be accomplished in 3 minutes.
SEE US AT OUR PITTCON EXPO BOOTH # 3938: HNU PID Analyzers