Densometers are the accepted instruments for measuring porosity, air-permeability or air resistance of sheet-like materials.
The 4340 combines the ability of a low, standard and high pressure densometer and smoothness tester and provides a reading in seconds.
An auto-drive mechanism enables the user to program the number of tests and the span they are tested over.
The Model 4340 Automatic Densometer & Smoothness Tester measures the porosity, air-permeability or air resistance of sheet-like materials. It combines the abilities of a low, standard and high pressure tester with a digital timer that provides a reading in seconds.
An auto-drive mechanism, enables you to program the number of tests as well as the span they are tested over. Therefore, a sheet or strip of paper can be analyzed automatically.
Porosity and smoothness of paper, textiles, paperboard, films, membranes, filter media, packaging, perforated metals and others.
Quality control - Air permeability can be a direct representation of the uniformity of material.
Analyze effects of treatments such as coatings, sizing agents, inks, resins or other additives.
Choice of Outputs
Low Pressure Gurley
High Pressure Gurley
Standard Gurley smoothness
Porosity & smoothness tests
Automatic & manual test modes
Output in seconds - improves efficiency
Programmable auto-drive mechanism
Interchangeable orifices (1.0 sq. in. standard, 0.25 & 0.1 sq. in. optional)