Document 10bQEDwQogq5Y4QeDDLk1DODj

Closer Voltage Regulation Possible jWith Help of New A-C Voltage Recorders Suppressed range Recorders, which provide high legibility at the voltage control point, are now available for recording almost any a-c voltage. These Recorders ignore that portion of the voltage range in which the operator is not interested and spread a few volts or kilovolts at the top of the range across a 9.8 inch chart. The instru ment can be either Micromax or Speedomax, depending on the speed of fluctuation in the measured voltage. Because the metering element is located at the metering point, there is no line drop and hence no loss in accuracy when the Recorder is located at a distance from the point of voltage detection. A pair of telephone wires or other solid conductors connect the remote metering element with the Recorder. Instrument can be either single-point or multiple-point. The multiple-point Recorder, available only from us. offers two outstand ing advantages: (1) Because one Recorder does the work of as mnnv as sixteen single-point instruments, it effects a distinct economy. (2) Comparisons among records are quick and accurate; involve no time lost consulting charts from several instruments. To help you select the Recorder which can be more useful in your power plant, we suggest you contact an LAN engineer. Leeds A Northrop Co., 4910 Stenton Avc., Philadelphia 44, Pa. Actual-tlse portion of a 4-polm Speedomax record ihowing voltages in the vicinity oMJ.t kv. Full range of Instrument li 9 to 15 kv. < MEASURING.INSTRUMENTS TELEMETERS - AUTOMATIC CONTROLS HEAT-TREATING FURNACES Lg.g6::$.'& N O RT H R U P CO. Jrl. Ad N-SMSI(I) other ceennie* SI) ter one . US for two ra Floor* IndEcot* petition end tempo** coonoctlee on all n&icrtptlea ertfom. . *" Hi iniri !r l Pj a 1 \ iH ^ i *a*M'Okaw.hiu roniCATioN O WYNKOOF, Fohflihar f W SWAIN, Editor l M ROWlfV. Wonoffn* (direr Jtftfof* Idhprt; PAANNCTT twmUR BOA SKROTZKI Aiifiro** Editor*: J l KINO J C McCADl C 0 SAMPCIS Art fAlton C 9 MARICHAUK t>rtit<iMtwinl(IAimt WoifiJoftoa: 0 0 Hegoto AtlonfOt loH* Mootdl* WORLD NCWS OHIC1S: Into, Partr. Itrilm. Motcow. Fret**, Sbeophol, lamboy. MoiJc* Cftp JANUARY 1 948-volume 92, number 1 a CROsXmodr or "subjects for the MONTH V-IZ. pf. ';,PtANTdl^tR'flTiHGMiTHOPSrM^IHTINflNCtvflND'5AfETY'i,t^ STEAM GENERATION, Fuels, FIRING AND COMBUSTION ' {fit'll HT;Tir 'V.t`T'1 -T-TrTV -'VTS. aTURBlNIS/INGINtS,: AUXIllAailS^HYORO',PjOWfR,>:^\ PICSUS, GAS ENGINES ANO ACCESSORIES ELECTRICAL EQUIPMENT, IttVATORS^- ' TRANSMISSION, LUBRICATION STIAM^SiRvYcFs^MEATING INSTRUMENTS, CONTROLS ^PUMP^fcpMPRESSQI^ FEATURE ARTICLES The strength of America....................................................................... 6} New boiler-plant design features reliability and simple operation 66 Turbine-generator exciters keep pace with increased operation.. 70 3600-rpm fluid drives adjust feed-pump speed to boiler lood.... 74 What part does pulverixed-coal firing play In oir pollution?........ 76 Fit the air-conditioning system to the load....................................... 80 For successful diesel operation know sleeve-bearing fundamentals 84 Establish adequate maintenance program for industrial turbines 88How to determine reliable air-flow data for duct-system design.. 92- Australia installs new high-pressure power plant. 94- Power for plastics production...................................... 95. Walking-beam engine--an old-timer....................... Hydrogcn-zeolite-treoted water dissolves scale... How gas engines serve today's steel mills............... 98- .99- 102 DEPARTMENTS Questions and answers on vertical turbine pumps. Power engineers' notebook of plant-tested idens.'. 105* no* Solving problems from the power plant................... 114- What's new in plant equipment........................... 118- Data shoot: refrigeration capacity........................... 126- Technical briefs: digests of recent developments-. 128- News of the power field............................................ 132- Reader service page for now equipment and technical literature. .180a* r, M I 44 VOLUME n. HUMBER 1 ABC ABF COFYRIOHT 1941 by McCRAW-HIlL PUBLISHING CO., INC. ALL RIGHTS RESERVED Jomot HM Mc<GGrro*wi . Fevndor end Honorery Cholrmon; Jomoi H McGt**. it, Fmtdont; Curlli W McGto*. SSoooloi Vk*-F#ild#*f end Troourrer; Jetoph A torordlI,. 'Secretory: Noioon Seed Olroetor el Advortlilng; Ewoene Dtrffleld, DISTRICIT MANAG...E..R...S..:...N...o...*...T.- oi.l....W......W......p. u...o..H...o..i.:....P..t.i.ll.o. dolpMo, C R lm; Editorial Anlitolt to Oho CU'oMnd. F S edlon CPhrolcilodgaen,'t;C*.i k_Io_u_tl_Qo_ch_lt_-ob_-n-i_-t;r~n_|,.n.J.r-.,n-.D,-.iC.-r.e-.c.Lt.o..rM. e.e.tlroleCd*lr:|c_uS_tt._a_tIlwi * O O Soon * P---U--I-U---C--A---T--I-O--N---OF--FIC*.E:-91---121 Stooi_do*r*.] Albany L NT* EDITORIAL AHO EXECUTIVE dfFICE. W W 42d St. Now Tort II. N I T C--*--k--l-* loetoo A4;.d.dA.r.ro.c.thi:ite"cUt*cGlidrao*.hlRllhNllood*olVphelr*t"I:eTSDSI-Sf TORtIWCTor.OJ OSFFMLIIaCll.EFSl:lUt--tEi.b-kMu_-r_M.g.,-hlhe*iIh*Jf#l;**eIIC*SAIIM9**#LHi.oC_Crt_nii_lic*lc-oLoSeJeoM.ea1.-M1I:C-.l*o|-rePmlo*ntIld.I?1ti,.t;M.t.oMR.n.MrMrFFt>oo--nooIi_ekl_bie_oio_c_e.0t*jUknlHdJoog.t.tiemOr*io*!t_rrerF.el.rtfoV*2ti.10;l1i*Cd0oe".S,lll.--l'WooOMil*ho-.l log. S( Lull I; I42T Stotior Efdg, toole* 14: (Oft Ihomt-Hererff EMg, Attento 2; Ftcrffc Ranu Efdg, Lot Agotof 14; Atdwvch Horn, AtdwycR, Undo* WC2 FOWER ortlclot om jndoiod I* both Hi* Indsiirtol Adi end th* Englnoorleg Indoi * POWER lueoi It* ledot oneooltr: ceplot ore ovotlobl* on roguott t* iho oditerlol oWeo, 1)0 W. 42nd M, Now York II. A173917