The AADCO 737-series Pure Air Generators have gained universal acceptance as oxygen generator instruments of choice where there is a requirement for a reliable, absolute source of zero air. Hundreds of these oxygen generation units are now distributed throughout the world, providing zero air for calibration purposes or relieving users from the tedious problems associated with stored air cylinders. Users include most federal and state air monitoring boards, foreign air monitoring networks, many federal analytical laboratories and a considerable number of industrial laboratories. These zero air generators ruggedness and compactness permit their use for in-plant process applications as well. In addition to serving as a source for zero air they provide clean, dry air for valving, solenoids and other process equipment. The life span of process instrumentation is greatly prolonged and maintenance is minimized through use of clean, dry air.

AADCO Pure Air Generators

The zero air product from the 737-series Pure Air Generators will easily satisfy the most demanding requirement for purity. AADCO's purity specifications: < 1 ppb ozone, methane, hydrocarbons, NO/NOx, H2S, S02, COS, CO, CO2, SF6 and fluorocarbons. All particulates are removed from the source air and never appear in the air product. It is typical for air monitoring equipment, calibrated to zero with cylinder air which is labeled as zero air, to indicate a greater deflection through zero when connected to a 737-series Pure Air Generator, clearly demonstrating the greater purity over cylinder air. In addition, the dewpoint of the air product from any 737-series Pure Air Generator will not exceed -60 F, making this the ideal air source. Equally important, the oxygen concentration is a constant 21%, as found in the ambient environment. This, again, is in contrast with zero air cylinders where a 6-8 % variation in the oxygen concentration is not unusual. This variation has a profound effect when calibration of ozone generators and ozone monitors or total hydrocarbon analyzers is attempted. This oxygen variation effect becomes even more pronounced when multiple instruments and locations are involved.

AADCO offers a variety of models of zero air generators so the consumer's selection is made depending upon application, output volume and mounting requirements. Mounting options include either bench mounting or rack-mounting for all units, regardless of output volume. For those instruments producing volumes greater than 0-Liters/ minute, larger components are entailed which necessitate a larger housing.