Membrane technology in the range of nitrogen purity of up to 99,9 %. This generator type provides easy handling without specific training resp. comprehensive operation manual. When nitrogen consumption is stopped, the unit automatically switches to stand-by mode. Maintenance is indeed negligible, just the filter set needs to be replaced. Connection and start-up are actually very easy, just by use of a standard 230V outlet, at rating of 1,5 kW up to 6 kW, depending on the production capacity. This model range HN provides N2 purity grades from 98,0 % up to 99,9 %, at capacity from 2,9 Nm³/h up to 103,0 Nm³/h, depending on the required purity grade.