prefilter

prefilter

[prē′fil·tər]
(engineering)
Filter used to remove gross solid contaminants before the liquid stream enters a separator-filter.

prefilter

In air-conditioning systems, a filter, 1 before the main filter to remove the larger particles; usually has a lower efficiency than the main filter and has a low pressure drop characteristic.
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References in periodicals archive ?
All models in the series come with a standard prefilter for ultra-fine particle removal.
QFT has 2-degree-of-freedom (2DoF) controller architecture, viz., (a) controller K(s) and (b) prefilter F(s), and the effect of closed loop uncertainties is reduced by the feedback controller while the feedforward prefilter shapes the desired frequency response.
In both papers, the prefilter design is carried out based on previous knowledge of the system's characteristics.
HepaSafe technology allows the operator to safely and easily change both the prefilter and the primary HEPA filter while the enclosure remains under negative pressure.
A nonempty subset F of an EQ-algebra L is called a prefilter of L if it satisfies, for any x, y [member of] L,
The use of a prefilter on top of an oleophobic filter eliminates blockages commonly found with other protein precipitation plates, especially when handling high protein samples.
F is called a soft fuzzy SFCst-prefilter (in short, (T7(X)) - prefilter) on 7(X).
Note that this example represents an exact prefilter because the data was filtered using exactly the specified context.
The enclosures include HepaSafe technology, which allows the operator to safely change both the prefilter and the primary HEPA filter while the enclosure remains under negative pressure.
it needs average 296 watts to run each SD filter and 141 watts for each penal prefilter (required for SL filter to ensure its service life).
Various types of prefilters were evaluated initially to find the optimal pore size and the type of material of the prefilter membrane, which effectively removes particles while minimizing bacterial loss.
The goal of the present work is to contribute to these attempts by loosening the assumption of strict bandlimitation while retaining the model of sampling of the classical sampling theorem: An arbitrary finite-energy input signal is preprocessed by a prefilter, the filter output signal lying in a well-structured space similar to the space of bandlimited signals is ideally sampled at equidistant points of time, finally the complete filter output signal is to be reconstructed.