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AIR VELOCITIES <br /> WITH THE DWYER PITOT TUBE <br /> AIR VELOCITY <br /> The toter pressure at an Orr stream flowing in a duct IS the sum of the static or oursting pressure estirtred <br /> noon TTTe sidewaers of tfee duct one the Imrt <br /> oacT or velocity pressure at the moving air Threon the use of a <br /> Pitot Tvoe eonnectea airferentratir to a manam»ter "It velocity pressure alone is indicated and tine car- <br /> escandrno air vetocirf aeterth►nea <br /> -► occ racy Or crus or menus i- <br /> ,� as in raooratory cool,C_tlOns extreme care is reaurrea and Tile roliowina <br /> :recouTions snoura ze aoserved <br /> c• a =meter 4' or greater <br /> AC,ce c^ ❑_-_rote Traverse der •Ke?v- c ,fir f <br /> • ,..rete ire veiacines c-a yv- <br /> cee ^e •ecainas <br /> _,ae r•^aern straicnr y_[• 4c•:c^s "' <br /> - ^ r-wn o- crameters - ena- <br /> -es •ea-r s^a i - _ O'rleTerS ..Own- <br /> •e=•� •-c-s r^e oirot •woe _ <br /> =•^viae an e.g crate tvice sora c-•ener �- --- �- <br /> _nsrrec,n ••orn Tote ortar it ce <br /> In mdarna an air vetoctiv cileC: select a vocation as suagestea eaove connect tuarno legal trees oath allot <br /> uoe connections •3 rte monamerer dna insert in TYe duct worn the ria airectea into the air stream If the <br /> -anomerer ~lows a -thus indication reverse Tre rjoes anti a direct reading manometer air velocities will <br /> ^ow ce s-owR rn •eel der minuTe In Omer *Y=es -e manomerer will reap velocity pressure in tricnes of <br /> -crew cla -e [_rresaenaino velocity will :e round ••om Tne curves in this outletrn It clrCUlRfTahClS do <br /> 'Or cermrr _, CC:_raTe Traverse center Tne :,rot 'Joe in Tile duct zerarmene the center vetaerty and multi• <br /> c r :v c =[•3t vt - --r -no Ooaroarmare aYeraaQ YetOCiry Field tests run in this manner shouic be ac. <br /> t.1raTC wit-in p ..S r -tMUSi ?'a <br /> to ,eioc v ­Cicc-ea is -Or ary air at fUar _ - '3rornufric -essure and a resultina conarty or 075: ' <br /> :J cir a -_ emaerature other Than 7:'0 -?or •7 *no curves in trots oullotrn Par otner variations <br /> om T-ese cynait ons .0 reeteOns mar oe cosea noon Tile ►oiiopono data <br /> r -­ectty— i C46 i — <br /> -mere ry=veiociry c•essure in incnes or water <br /> =Air aensuv <br /> ag <br /> 4.r i:ennwv= i 3?S x — <br /> ' <br /> -mere rg =8aronietric r-enure in incnes of mercury <br /> Aoietute 1 emaerature i naicatea temperature <br /> Z u$ x401 <br /> cw .m ci •r her rntm =0uct area in scryare reet x Air velocity in rt <br /> er ?"In <br /> ATR vELCC` S-UNLESS STEEL <br /> C-LC.._aTCR FiTCT TU8E5 <br /> C]mlOurl! ..salt, easde -.I, cRRwIRR\O unity [� <br /> on air oemll-W CJrrectea Plrre.vnt ORO irler,m <br /> lot eonaitrons at re'Redro- SlryRIOR n1 MO iO4• eon. <br /> ♦feint <br /> ASwiuA <br /> �� -Joe Ono ordsture C Tr- .. , *Gt %?"I r n<n �re0u• <br /> -ates i r a�n„ S - o _ 3110^s std- adorn e. n <br /> at.ons =Pmaes warn sdtned tar r.15 <br /> a u -let Cy,re•aan a. t—�Yelre� .,.w+ AAA <br /> CA oma <br /> -a to 4U13 to c.. �:0 =-� 'I AY,RQAE sower eot.onf <br /> .r,yndd , 1 each c tar S las _ e o4 _na <br /> .ae .2h. F`9'0of P1.00 Mo.— <br /> n 7 <br /> �'PdL <br /> 892 17100tr 7OVrIQ't 1�JZ _--W-Tm n@M fie <br /> ® WYER INSTRUMENTS , INC. Tekoore2_1ST 8000 <br /> P 0 SOX :73 a MICHIGAN CITY INDIANA 46360 U S.A Fax219AM-SM7 <br />