GTLB Series F400 120 Rated Fans - Klimats24.lv
GTLB Series F400 120 Rated Fans - Klimats24.lv
GTLB Series F400 120 Rated Fans - Klimats24.lv
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Performance curves - <strong>GTLB</strong>/GTHB-3-071<br />
Belt-driven, single inlet,<br />
backward impellers<br />
Diámetro rodete: 710 mm<br />
Pt<br />
Pa<br />
mmWG<br />
Note: Only <strong>GTLB</strong> models are available in the<br />
smoke extract version 400ºC/2h.<br />
Acoustic characteristics<br />
The sound levels shown in the curves are<br />
sound power levels in dB(A), on the outlet<br />
side of the fan with inlet and outlet ducted.<br />
The correction values K(f) given in the table,<br />
are used to calculate the radiated noise levels<br />
according to each frequency band (f), depending<br />
on the position.<br />
Measured position<br />
LwA(f) = LwA + K(f)<br />
Centrifugal direct drive fans <strong>GTLB</strong>-GTHB<br />
1 = Discharge duct<br />
2 = Inlet duct<br />
3 = Radiated (with inlet and discharge ducts)<br />
4 = At the discharge (free)<br />
Test set up<br />
Speed of<br />
Corrections K(f)<br />
the impeller<br />
Frequency bands (f), Hz<br />
Position (s) (rpm) 63 125 250 500 1000 2000 4000 8000<br />
At the discharge<br />
duct (1)<br />
At the inlet<br />
duct (2)<br />
0 - 815 31 14 9 7 4 8 13 21<br />
816 - 1631 31 22 9 7 3 8 14 21<br />
1632 - 1900 -6 -6 -4 -2 -4 -9 -14 -19<br />
0 - 815 29 14 9 9 5 8 13 20<br />
816 - 1631 29 21 8 10 5 9 13 20<br />
1632 - 1900 -5 -6 -5 -2 -5 -9 -13 -18<br />
Radiated with ducts 0 - 815 39 22 15 12 9 14 21 36<br />
at the inlet and at 816 - 1631 39 29 15 12 8 14 22 36<br />
the discharge (3) 1632 - 1900 -14 -13 -10 -9 -10 -16 -25 -38<br />
At the discharge<br />
(free discharge-4)<br />
0 - 815 37 17 10 7 4 8 13 21<br />
816 - 1631 37 25 10 7 3 8 14 21<br />
1632 - 1900 -13 -9 -5 -2 -4 -9 -14 -19<br />
347
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