Depth filter
Depth filters are economically suitable for low mass concentrations up to an average concentraion of 5 mg/m³ (5 mg/m³ = 120 g/day per 1,000 m³/h). Due to the dust fineness and low dust mass, the dust-laden filters are not cleaned and must be replaced. Depth filters are primarily used in ventilation and air conditioning and in process air technology.
Another often usage are safety filter stages (2. filter stage) for improvement of residual dust contents or for protection in case of a filter breakthrough of the upstream filter stage.
| Depth filter | ||
|---|---|---|
| Cleaning | without | |
| Typical parameter: | Residual dust concentration | 0.001 - 5 mg/m³ |
| Particle size distribution | mostly > 0.1 - 100 µm | |
| Temperature | -40 - +400 °C | |
| Separation efficiency | 40 % - 99.999995 % | |
| Filter media | Glas, PES, PP, paper like, wet laid fleece, composite products | |
| Typical characteristics | Surface weight | 50 - 600 g/m² |
| Steady differential pressure | 20 - 500 Pa | |
| Geometry | Filter mat, filter cell, compact filter, panel filter, cartridge filter, pocket filter | |