coarse filter

coarse filter

In an air-conditioning system, same as prefilter.
References in periodicals archive ?
The extract was cooled to -20 C and filtered using coarse filter paper to remove the fat.
Because the "coarse filter" approach provides a relatively coarse level of representation, some unique habitat types are bound to be missed.
Coarse filter, habitat based conservation planning tools were developed by conservation NGO's and governments as efficient planning tools for identifying arrays of complimentary conservation action sites (Faber-Langendoen, 2001; Groves et al., 2002; Das et al., 2006; Howard et al., 1998) and were specifically intended to avoid many of the problems associated with comprehensive species-specific planning and inventory.
The circulated airflow rate was 43 l/s (91 CFM), and the circulated air flow was filtered by a synthetic coarse filter of class G4 (approximately MERV 7-8).
The G4 10 piece coarse filter separates any dust particles, the F5 pre-filter filters finer dusts, the F9 main HEPA filter filters other fine dust particles with a more than 99% separation efficiency and the Activated Carbon Filter absorbs any unpleasant odours.
"We take the dirty coolant from the machines and send it through a coarse filter to remove large contaminants.
As well as the Pure-Screen wedge wire filter range, the company also offers a low cost perforated sheet strainer which is designed as a low pressure drop "last chance" filter and can be used as a coarse filter or as a means of protecting pumps and instruments.
As well as the Pure-Screen wedge wire filter range, the company also offers a low cost perforated sheet strainer which is designed as a low pressure drop 'last chance' filter and can be used as a coarse filter or as a means of protecting pumps and instruments.
On the other hand, using a coarse filter medium, backwashings are reduced but the filtration results are not as good.