Vacuuming fresh food using chamber machines is often a daily activity in butcher shops, at fresh food counters for meat, sausage, and cheese products, as well as in the foodservice industry. All fresh foods contain more or less unbound water, which partially evaporates during vacuum packaging. This can influence the quality of the product. Furthermore, if the packaging machine is not permanently in operation, the packaging result may deteriorate, or the packaging process may take too long.
One definition of “calibrate” is “to determine, rectify, or mark the graduations of something”. An ammeter is an instrument for measuring electric current. Therefore the simple definition of a calibrated ammeter is a current measuring device marked with units of measure, presumably amperes. In the blower industry, however, the term has developed a specific meaning. A calibrated ammeter is an instrument that measures a blower motor’s current draw and converts the measurement to a display of blower airflow rate.
The 2022 AISTech Conference and Exposition was held May 16-18 at the David L. Lawrence Convention Center in Pittsburgh, Pennsylvania. It was the conference and exposition’s most successful year yet with more than 8,000 attendees. The event featured 300+ technical presentations and 500+ exhibitors, featuring the latest technologies in iron- and steelmaking from all over the world. AISTech 2022 also gave away a brand new, fully loaded, 2022 Chevy Silverado Truck to one lucky attendee. Both Blower & Vacuum Best Practices and Compressed Air Best Practices Magazines were pleased to be in the literature bins.
The basic function of vacuum degassing is to remove the vaporized gas and moisture from the extruded material. During the extrusion process, as raw materials melt under heat and pressure inside the extruder. The polymer chains and chemical compositions are going through changes, and a variety of gases are released.