Show DEVICE SHOWS INTENSE HEAT HEAL Operator May Stand Some e Distance From Fiery Furnace CHICAGO April By 23 23 By By the he Associated Press An An Instrument nt capable of or measuring extreme lo coming In IndIrect indirect r Without direct contact with the th source ot of heat hett Iq 1 now being beloc used In a num- num number number nu ber of nf o Industrial plants to tn deter del mime mint the mOunt amount or of o heat beat In the I kilns or furnaces where raw w ma- ma I tennis terl a are being burned or nr melt melted according to officials ls of or the Structural tural turl Materials I ten l Research Itc erca LaboratOry Labora- Labora Laboratory Labo I tory of or the I Lewis Lewig Institute here The Instrument Is kno- kno known knorn rn as n R a radiation p pyrometer and nd consorts consIsts consi of or a small telescope containing a aI apiece I and nd two t piece ot of C colored glass class small mail n Ire Ires attached to an Indi In cator c ator tO box StandIng hack bick b some dis- dis distance i tance from the tho Rita Kiln or furn furnace ce the operator sights the little telescope at t the th spot where th the glow Is la hottest hot hot- hottest test The Tho glass focuses the heat on the he 1 which E and regis regis- I tel er the degree of ot temperature onI ona ont on a t dial on the Indicator box In Portland cement plants where There here a temperature of ot from rom 2600 2500 to 0 degrees Fahrenheit Is seeded needed In to the kilos kilns to burn the n raw materials to a clinker the common on mercury thermometers are aro useless because mercury reaches Its boiling at 75 degrees dEgres By using t the I pyrometer a direct check Is Iq kept k pt although Ion on m the kiln temperatures some operators have an almost un- un cann canny anny sense tense of o t determining this thisby tl by y sight At one of or the cement mills re- re recently c- c was th the pyrometer turn turned on n the sun The little lit needle in the tile Indicator bo box Im- Im n- n sprang over the mIni mIni- mInimum mt ma Im-I Im J- J 1 mum figure bouncing against the tides sides lot ot of the box In its effort to toI Q I egister the ha heat of lr the suns sun's sur- sur i face ace miles Iles away |