Retrotec Blower Door Bedienungsanleitung PDF herunterladen (Seite 60)

Page 60 of 87

©Retrotec Inc. 2015

Appendix B: Find correct CFM at particular fan pressure

Flow conversion tables can be used to determine correct flow (CFM) at a particular fan pressure (Pa) on PrB. Back

pressure should be considered, especially if fan flow is going toward the operator (i.e. when the operator is in the

pressurized zone). The DM-2 gauge and the Retrotec self-referencing fans automatically measure back pressure.

The following five tables offer flow data for these situations:

back pressure of 10 Pa for 1000/2000/3000 fans, flow away and toward

back pressure of 50 Pa for 1000/2000/3000 fans, flow away and toward

back pressure of 25 Pa for DU200 fans

Back pressure has the biggest impact when flow is toward the operator, regardless of test direction.

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 86 87

Keine Kommentare

Retrotec Blower Door Bedienungsanleitung Seite 60