pf_02026 - Laserfiche WebLink

Home

~otJR."<<.1. OF HEALTMCARE PROTE{:TI:iN M.ANAGEME.....'T ~7 (table 3D~:-S ~t .znd of artcle), ~mp eff.Cacies vary considerab!y both \A.~thjn and beN.'een t.~t! sUe differEnt aregories of lamps used fo'!' gen~ lighting purposes, "A lamp's ~!e.d me is an impor- tant consideration rebtjve to se- curiti lighting. Lemps which i!!T'2 :"'!atlve.1y s.~ort-lived. such as ii"!- ca...d~nt lzmps, require fre- q~~t ch~ging. The long life c: meK',;,ry vape! tamps (24,000 hcu~) contributed signi.~c.a...,t!y 10 their popularity, despite relatively low efficacy. High-pRssure sodium (HPS) lamps provid~ both long llie end h!gh efficacy, but tni:)i produce what is wed & ~ldei! whne col~r. This ca~" so~e color shifting:-e.g., reds take on ~ trowrJsh cast "Noneth~. in beams ~~. HPS 1a.rnps, an ~oIors remain ~ ogrnzable. HPS lam!'S are userl rnflT'~w.1y fOT street and tu::shv.n)Y l1ghiing and other forms of out- door illUJTIJnation. !,ow-pressure sodium 1am~e e\'en mo.ooe effi- dent than 1 iamps. but they ~ an illuminated ~~~ _ ~a$ .sMde$ of ~ . or Dow, uu I! color ide.l'itincation is of no im- po~,:e for 5e...'...,.u1ty or otzit): pur- poses, thEm low-pre$Sur:; sodium lighting :2f. i.~ particularly cost ef- x_ -I>Z_..- &C-<4t,..U;VC;... ". .. 1n rn"s~ instances. hC\iJ- EV41r, best 1\..'>$'..u_ ~cur wt!~n 11P.W lamps and iummau-es lire selected rogeth~ to optimize compatibility .---- b ~tv..'ecm th~ .we and the func- nc r.s ~or whi::h L~~ a.-e Intended, i_uminai~ ~ also rated in tem'.s t,f efficiency, mL'St commoniy by coeff!dent of utilization or eu. A CD of 0.75 L.,dicates that 75 ner. cent of the tigh~ emitted by 'L~e lamp is delivmd by iumin:ilie t-? thf. work 1)~'1e. A ranqe of 11.lrr.:nalNs is'av;,~ble fotoutd~r a?phations. The ~bmty 01 a S"~- t~m to put Jightwhtm; it is needed, withO'.Jt unintentional shaciolA.os or poo'.s of darkness, Is of pa.~cu1ar impo~. Where lurrjna.tres may be subject ~ vandalism, p1as- tk: lenses \lJruc.~ can resist penetra- tion by peJ1et$ and other m1ssiles m~y be advi.sablc. "Tt- - mounting height d a luminaIre is of considerable 1m-- portat~ for a vmiet'i of NaSOns, The higher the lumlnaire is l0- cated, the larger the lamp which ccm be used without causing any ~gnificant glare. lJ.rge lamps Me more efficient. 11-i€ ovd nature oj t~e !nrtallations must be eonsi~ cered ca.-efuUy, h~er. No mat- ter hew .:!ffident it m&y be, it v.'Ouid be tcmlly inapproprl.ate to use a 50 foot-hlgh rr.a$t pol~ equipped wib'1 six 1,000 HPS luminaires, for Bghdng l'1e grounds of l1 gvden apartrMnt ~~r!~:. M~~~~~~~ ~!'.:!ci~- tions also aN Important r~t!v~ to mounting height Some ~~$ are equipped o,,;.'ith m()~.ed de~ vices to lower the !u.~ ~or I f