Agilent Technologies TPS-compact Mode D'emploi page 268

17 Technical Information
TPS-Compact Outline
The inlet screens mod. 9699300, 9699309,
9699302 and 9699303 prevent the blades of the pump from being
damaged by debris greater than 0.7 mm diameter.
The inlet screen, however, does reduce the pumping speed by about
10 %.
The inlet screen is fitted in the upper part of the pump, as shown in
the figure.
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