CONCOA has introduced a new, easy-to-use blender that enables users to create precise custom-blended gas mixtures on site for GTAW (TIG) and GMAW (MIG) industrial welding applications.

Designed to increase productivity by eliminating time-consuming cylinder handling, the BlendMaster™ 657 Series provides 0 to 25 percent blend adjustability for two-component gases. Blending pure argon and carbon dioxide gases, the BlendMaster 657 enhances quality by maintaining a +/- 1.5 percent accuracy and eliminates the hassle of stratified high-pressure cylinders in storage.

EquiBlend™ technology allows for full flow regardless of the mix or blend ratio, a contrast to fixed-orifice technology. A pressure equalization system minimizes inlet pressure fluctuations to stabilize the mix, broadening the inlet pressure range difference between the major and minor component gases. The BlendMaster is also compatible with a wide variety of cryogenic supply sources, such as liquid cans, micro-bulk, and bulk gas supply systems. The low inlet pressure range allows for accurate mixing even while supply sources are filled. Additionally, an optional low-pressure remote alarm can be integrated with other building systems via contact interface to provide a higher level of systems integration.  

The BlendMaster 657 is available as either a wall- or floor-mounted unit for installation and maintenance flexibility, and provides up to 1,750 SCFH at delivery pressures from 10 to 50 PSIG. A lockable enclosure assures process control, and an integral line regulator supports flowmeters, regulators, and flowmeter installations. Other options include a continuous binary analyzer for single or multiple gas types. Power requirements are 110 or 220 VAC, and ambient atmosphere and gas supply temperature requirements are 32°F to 100°F (0° to 38°C).