APM 520 A

The Envirotech APM 520A Flow Calibrator is designed to provide a reliable and portable flow standard for flow  verification of environmental sampling systems.

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The Envirotech APM 520 A Flow Calibrator is designed to provide a reliable and portable flow standard for flow  verification of environmental sampling systems. The APM 520 A is a primary flow calibrator based on a standard  glass body soap bubble meter. A portable vacuum pump is provided for motion through a fixed volume and a  calibrated watch is also provided to read the traveling time of soap film through a fixed volume. Each APM 520A  calibrator is calibrated using a standard volume traceable.

Special features : 

  • Primary Standard based on Soap  bubble meter.
  •  Dimensional & timing accuracy  traceable to national standards.
  • Suitable for verifying rotameters used  in air monitoring systems.