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GRM 685

GRM 685
GRM 685
  • GRM back view.

Color scheme

 Beige RAL 1015  Black RAL 9005  Blue RAL 5005  Brown RAL 8017  Grey RAL 7001  White RAL 9016

ParameterValueUnit
Material
Metal shape with polymer coating
Form
Square
Adjustment
Non-regulated
Inner cross section size
601х601
mm
GRM 685
SizesLL1L2e
mm685635621307.5

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+380 44 406 36 25

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Calculation formula   Correction factor Кp
ΔPp = ΔP х Кp     22° 45°
  Кp 1 1.25 1.5
Calculation formula   Correction factor К
LWA = LWAO x K   Sap [m2] 0.01 0.02 0.05 0.1 0.2 0.4
  K [dB(A)] -9 -6 -3 0 +3 +6

Designation:

ΔPp - pressure loss at various vane positions [Pa];
ΔP - pressure loss [Pa];
Кp – correction factor for pressure loss calculation depending on louvre deflection angle;
LWA - sound power level [dB(A)];
LWAO - sound power level for air pass 0,1 m2 [dB(A)];
K - correction factor for sound power level calculation depending on air pass [dB(A)];
Sap - air pass [m2];
V - rated speed [m/s].