Envelope Surface Area Analyzer

PMI's Envelope Surface Area Analyzer (ESA) provides a simple, fast, and reliable method for measuring external surface area — a measurement not readily achieved using static nitrogen adsorption (BET) methods.

Envelope Surface Area Analyzer

Overview

PMI's Envelope Surface Area Analyzer (ESA) provides a simple, fast, and reliable method for measuring external surface area — a measurement not readily achieved using static nitrogen adsorption (BET) methods. The ESA utilizes flow permeameter combined with a sophisticated self-adjusting viscous-flow controller, enabling accurate testing of a wide range of powders and other materials, including samples with surface areas of only a few square meters per gram.

  • Uses nitrogen or other noncorrosive gases; no expensive gas mixtures required.
  • Windows-based software handles all control, measurement, data collection, and report generation; manual control also possible.
  • Compatible with Windows XP or higher.
  • Real-time graphical test display depicts testing status and results throughout operation.
  • Non-destructive testing.
  • Length of test approximately 5 minutes.
  • Wide range of acceptable sample types and sizes.
  • Minimal maintenance required.

Specifications

Dimensions7 in (H) × 17 in (W) × 17 in (D)
Mass Flow Transducer Range10 to 100 cc/min
Power Requirements110 / 220 VAC, 50 / 60 Hz
Pressure Range0 to 500 psi
Pressure Transducer Range0 to 500 psi
Pressurizing GasNitrogen or other non-corrosive gases
Sample Size1 to 10 cc
Surface Area Range0.1 to 10 m²/g
Weight30 lbs