Porometer 3GZ- Capillary Flow Porometry

DESCRIPTION

The POROMETER 3G™ Series of instruments are the latest generation of capillary flow porometers. Using the technique known as liquid expulsion, they measure the Bubble Point, pore size distribution, permeability and other related information regarding the through pores in membranes and other filtration media. Developers and manufacturers of filter media around the world use these instruments to measure the bubble point and through pore size distribution of their track-etched membranes, woven or non-woven fabrics, hollow fibers, papers, or ceramics. They understand that these properties are crucial predictors of the materials ultimate filtration and separation performance. 

The capillary flow porometry technique involves applying an increasing pressure to one side of a wetted porous sample while measuring the amount of flow downstream of the sample. At first this flow will be zero. Once the pressure is increased to the Bubble Point (associated with the largest through pore size present) an initial flow through the sample will be detected. As the pressure is increased, the pores in the sample are progressively emptied (largest through-pore first, then smaller ones). The flow rate through the emptied pores is recorded and used together with the pressure to provide information such as the maximum pore size, the mean flow pore size and full pore size distributions.

Because of the components used in the instruments of the POROMETER 3G Series of capillary flow porometers, they are useful for measuring the fluid permeability properties associated with the through pores as well as the bubble point and through pore size distributions present in a material.

Through-Pore Size Analyzer: 0.03 to 500 µm
The Porometer 3G z is a compact, automatic, broad size range capillary flow porometer, configurable to a wide range of flow rates, for measuring through-pore sizes using the liquid expulsion technique. The pressure capability of up to 250 psi (16 bar) allows for pore size distributions in the range of 0.03 to 500 µm to be measured quickly and reproducibly on a wide variety of materials like woven and non-woven filter materials, membranes, papers, sintered metals, etc. The availibility of different flow sensor modules (from 1L/min to 200 L/min) makes the 3G z the ideal customizable porometer, especially for samples of controlled geometric size and through-porosity since these parameters, not just pore size, significantly control absolute gas flow through the sample. The 3G z is also capable of gas (and optionally liquid) permeability measurements. It conforms to ASTM standard methods D6767, E128, F316, and similar.

Specifications

• Pore Size range:
  • <0.03µm to 500µm
• Pressure range, overall:
  • 0.015 to 250 psi (0.001 to 16 bar)
• Pressure controllers (number, range):
  • 2: (0 - 30 psi, 0 - 300 psi)
• Pressure sensors (number):
  • 3: (0 - 5 psi, 0 - 100 psi, 0 - 250 psi)
• Pressure relief valves:
  • 3 (internal)
• Pressure sensor accuracy:
  • +/- <0.05% f.s
• Pressure resolution:
  • 16 bit A/D equivalent
• Flow sensors (thermal mass flow):
  • 1 or 2 as desired
• Flow rate range (standard):
  • 0- 100 Lmin-1
• Flow rate ranges available(optional):
  • 0-1, 0-5, 0-50, 0 - 100 & 0 - 200 Lmin-1
• Flow sensor settling time:
  • < 1 secs
• Wetting fluid:
  • Porofil