Gas Generators

Calibration Gas Generators

Portable, on-demand gas calibration solutions.

Traditionally, calibration gas was supplied in cylinders, but this method has notable limitations. ACD gas generators overcome many of these limitations:

• Easy to transport by air
• Variable flow rates up to 1 LPM and ppm levels on demand
• Can use external pumps up to 10 LPM
• PPM levels from 50 ppb to 50 ppm
• Up to eight gases from one unit – chlorine, chlorine dioxide, ozone, ammonia, hydrogen sulphide, hydrogen, NO and HCN
• Gas supplied on demand
• NIST traceable calibrations
• ISO 6145-11 compliant
• High accuracy
• Portable and easy to carry
• The most economical low-cost option over time

Calibration gas cylinders are typically mostly filled with clean, dry air, making them highly inefficient. In a 10 PPM cylinder, for instance, 99.999% of the content is air. Calibration gas generators, on the other hand, leverage the ambient air at the calibration point, blending it with the desired gas, offering significant advantages.

Calibration gas generators produce gas on demand, eliminating the need for storage. This approach provides several benefits compared to older methods, as the gas is only generated when required, and it is never pressurized. Calibration gas generators are safe for air transport and do not degrade over time. Many customers use the same calibration source for 5, 10, or even 15 years without any loss of calibration quality, given annual service checks (note: NIST traceable calibrations have to be repeated every 12 months to keep them valid).

The on-demand gas generation enables a single calibration source to produce adjustable concentrations, unlike cylinders, which offer fixed concentrations. PPM levels from 50 ppb to 50 ppm.