WL 312 Multipurpose Air Duct and Heat Transfer Unit

1 trolley,  2 fan with butterfly valve,  3 inclined tube manometer,  4 Pitot measuring device,  5 viewing window,  6 empty part,  7 air duct,  8 temperature / humidity combined sensor (not visible),  9 steam connections,  10 pressure sensor,  11 intake funnel,  12 flow straightener,  13 ring chamber for pressure measurement,  14 humidification pipes,  15 traversing device,  16 switch box