The Thermal and Evolved Gas Analyzer (TEGA) is a scientific instrument aboard the Phoenix spacecraft. TEGA's design is based on experience gained from the failed Mars Polar Lander. Soil samples taken from the Martian surface by the robot arm are eventually delivered to the TEGA, where they are heated in an oven to about 1,000ºC. This heat causes the volatile compounds to be given off as gases which are sent to a mass spectrometer for analysis. This spectrometer is adjusted to measure particularly the isotope ratios for hydrogen, oxygen, carbon, nitrogen, and heavier gases. Detection values as low as 10 parts per billion. The Phoenix TEGA has 8 ovens, which are enough for 8 samples.
A residual gas analyzer (RGA) is a small and usually rugged mass spectrometer, typically designed for process control and contamination monitoring in the semiconductor industry. Utilizing quadrupole technology, there exists two implementations, utilizing either an open ion source (OIS) or a closed ion source (CIS). RGAs may be found in high vacuum applications such as research chambers, surface science setups, accelerators, scanning microscopes, etc. RGAs are used in most cases to monitor the quality of the vacuum and easily detect minute traces of impurities in the low-pressure gas environment. These impurities can be measured down to 10 − 14 Torr levels, possessing sub-ppm detectability in the absence of background interferences.
RGAs would also be used as sensitive in-situ, helium leak detectors. With vacuum systems pumped down to lower than 10 - 5Torr—checking of the integrity of the vacuum seals and the quality of the vacuum—air leaks, virtual leaks and other contaminants at low levels may be detected before a process is initiated.
Thursday, February 5, 2009
Brimrose NIR Analyzer
A new series of miniature near-infrared (NIR) spectrometers is said to offer a cost-effective tool for inspecting incoming raw materials and product quality control. Compact, battery-powered Model 5030 ATOF-NIR Portable Analyzer from Brimrose Corp. of America, Baltimore, allows laboratory tests to be performed anywhere in a plant environment. The instrument, which sells for $28,000 (compared with $40,000 for larger units), is reportedly insensitive to ambient light, vibration, dust, and dirt. Its design allows for quick switchover from solids to liquids, and results appear instantly on its LCD. Applications include material identification or measurement of moisture content and active-ingredient levels. Once the instrument is calibrated, it reportedly can be used by an inexperienced operator.
Dual IR Gas Analyzer
| 2 or 3 channel Fast Response 3 Ranges per channel RS232 4-20mA & 0-10V Menu Diagnostics 2 year warranty |
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We are excited about getting this product. We have fielded many questions in the past and turned away countless product inquiries for high accuracy, multigas applications. This is the only multigas Gas Filter Correlation Infrared (GFC/IR) gas analyzer available anywhere. This equipment can also be outfitted with a paramagnetic oxygen module.
Based on the proven, 7000FM Series GFC/IR and Model 8000M Paramagnetic oxygen gas analyzers, the 9000MGA is a much higher quality alternative to drifty single beam IR and fuel cell oxygen multigas analyzers that are currently available.
Save yourself the trouble and disappointment of buying something that won't work properly. The 9000MGA is available now and ideally suited for combustion research / combustion analysis applications.
The standard 3-rack unit tall, Series III instrument case has up to three sets of keypads and operator displays on the front panel. Each channel may be operated seperately (as a seperate gas analyzer) and plumbing connections may be easily configured at the rear panel for this type of operation. This is a dry-basis measuring instrument so it must be used on a dry or conditioned gas stream. A series 200 gas conditioner or similar chiller is necessary for measuring raw exhaust and combustion gases directly.
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