Spectronics Spectroline DMXA Series User manual

OPERATOR’SMANUAL
DMXA-Seriesand DMHA-Series
DigitalRadiometers
®
SPECTRONICS
CORPORATION
956 Brush Hollow Road, P.O. Box 483
Westbury, New York 11590
800-274-8888 • 516-333-4840
Fax: 800
-491-6868 • 516 -333-4859
www.spectroline.com
ManualNo.84087-8
Printed in U.S.A.Issued:July 2004
Recycled
Paper

C ongratula tionso n c h o osin g a S p e ctrolin e
®
DMXA- S eriesorDMHA- S eries
digitalra dio m e ter. S p e ctronicsC orp ora tion h asd esig n e d it to provid e
th e m ost d esira ble fe atures, th e b est p erform a n c e a n d,w h e n use d pro p-
erly,ye arsoftrouble-fre e o p eration.Ple ase re a d th e instru c tionsin this
m a nu alc arefully b efore usin g th e unit.
SECTION IINTRODUCTION
1.1 GENERAL
Th e S p e c trolin e D MXA- S eri esa n d D MH A- S eri esdigit alra dio m e-
tersprovid e re a dingsfro m 0-19,990 µW/ c m2or0-199.9 mW / c m2
(0-199,900 µW / c m2),resp e ctiv ely.Th e y fe a ture a n e asy-to-re a d L ED
displa y.Th eir o v erall a c c ura c y isb ett erth a n ±5%.
Th ese ra dio m e tersuse high-q u ality interfere n c e filtersth a t exhibit
a c c ura t e a n d c arefully c ontrolle d sp e ctralc o v era g e,pra c tic ally
elimin a tin g un w a nte d m e terse nsitivity to infrare d interfere n c e a n d
oth erun d esira ble ra dia tio ns. Thisallo wsth e re a dingsto b e o bt a in e d
dire ctly inste a d ofb y c alc ula tio n,a tim e-c onsu min g a n d error-
pro d u cing pro c e d ure re q uire d by c ert a in c o m p e titiv e d e vic es. Th e
interfere n c e filtersalso minimize th e “solariz a tion”eff e ct u p o n th e
resp onse ofth e m et ersov ertim e.
All S p e ctrolin e ra dio m e tersare c alibra t e d to NI S Tst a n d ardsby pyro-
ele ctric m e tho dsform a ximum a c c ura c y.Th e y a re d esig n e d with a
lo w ele ctric alim p e d a n c e,m a kin g th eir lin e arity v astly sup eriorto
th a t ofa ny oth erc o m p ara bly pric e d ra dio m e ters. Th e se nsorh e a ds
are provid e d with a sp e cialdiffuser-se nsorwin d o w th a t e nsures
a c c ura t e L a m b ertia n orC osin e resp o nse.
Th e m et erin g ele ctro nicsofth e DMXA- S eriesa n d DMH A- S eries
ra dio m e tersfe a ture b etterth a n ±5%a c c ura c y,inte gra t e d circ uitry,
a n d solid-st a t e L ED displa y.A d dition a lfe a turesofth e ele ctronicsare
exc elle nt te m p era ture a n d o v er-ra ngin g c h ara cteristics. Th e D MXA-
S eriesa nd D MHA- S eriesra dio m e tersalso h a v e b uilt-in a utozeroing.
1.2FEATURES
1.2.1Th e S p e ctrolin e D MXA- S eriesa nd D MHA- S eriesdigit alra dio m e-
tersare p o cke t-size d,b a tt ery-o p era t e d unitssuit a ble foruse in th e
m e asure m e nt of254n m,300nm,365nm or450n m w a v ele n gths.
1.2.2Th e ra dio m e tersfe a ture n onre c h arg e a ble a n d re c h arg e a ble
o ptions. With th e n onre c h a rg e a ble o ption,th e m e tersre q uire four
‘‘ A A ’’ 1.5 v olt,alk a lin e b a tt eries. With th e re c h a rg e a ble o ption,
th e m et ersre quire fo ur‘ ‘ A A ’ ’ 1.25 volt,nic kel-c a d miu m b a tt eries
a n d th e S p e ctrolin e M o d e lDM-15 C 0001 b a tt ery c h arg er(se p ara t ely
availa ble).
3

1.2.3Th e ra dio m e tersm e asure irra dia n c esassp e cifie d in Ta ble 1-1.
Th e se nsorg e n era t esele ctric alc urre nt pro p ortion alto th e irra dia n c e
exp erie n c e d a t a pla n e d efin e d b y th e fa c e ofth e se nsor.
A m plific a tio n a n d c urre nt-to-v olt a g e c o nv ersion circ uitry are c on-
t a in e d within th e h a n d-h eld displa y unit a n d itsinte gra t e d n a ture
provid eshig h relia bility a n d a c c ura c y in th e re a dings.
1.2.4Th e num eric aldispla y isa lig ht-e mittin g dio d e ( L ED) forpre cise
re a ding in e v e n tot ald arkn ess. Th e num eralsare 0.5 in c h (12.7m m)
hig h a n d in a single pla n e fordist a nt a nd wid e-a n gle vie wing.
1.3 A C CESSORIESAND REPLACEMENTPARTS
All a c c essoriesa n d re pla c e m e nt p artsre q uire d forth e o p era tion of
th e ra dio m e tersare liste d in Ta ble 7-1.
1.4TECHNIC ALDATA
Ta ble 1-1 listsall th e te c hnic alsp e cific a tionsforth e ra dio m e ters.
SECTION II INSTALLATION
2.1UNPACKING AND INSPECTION
2.1.1Un p a c k a n d insp e ct th e ra dio m et erforp ossible d a m a g e in
ship m e nt.C h e ck th e p erform a n c e asso o n a sp ossible.Ifd a m a g e is
note d,notify th e c arriera n d su p plierb efore usin g th e instrum e nt.
Also c h e c k th a t a ll ite msare in clu d e d.
2.1.2 S a v e th e ship pin g c arton a n d p a c kin g m a t eri alsforfuture
storin g orship ping ofth e ra dio m e ter.
2.2POWERSOURCEREQUIREMENTS
Th e ra dio m e terisb a tt ery o p era t e d.Th e b a tt eriesare fa ctory
inst a lle d in th e instru m e nt.
WARNING
Thisra dio m e terisc arefully d esig n e d to pre v e nt a c cid e nt a lsho ck to
th e o p era torw h e n pro p erly use d.Ho w e v er,n o e ngin e ering d esign
c a n re n d ersafe a n instrum e nt w hic h isuse d c arelessly.Th erefore,
re c o m m e n d a tio nsprese nt e d in thism a nu almust b e re a d c arefully
a n d th oro ug hly un d ersto o d b e fore a ny m e asure m e ntsare m a d e .
Failure to follow directionscould resultin seriousadverse effects.
Also,c ert a in m o d elsare d esign e d foruse in re gio nsofth e sp e ctrum,
n ot a bly th e ultra violet ra n g e,whic h m a y b e h a zard ousto th e e y es
a n d / orskin ofin dividu a ls. Ultra violet prote ctiv e e y e w e a r(UV S -30
sp e c t a clesorUV G-50 g o g gles) a n d fa c e w e ar(UVF-80 fa c e shield)
are o bt ain a ble fro m S p e ctronicsC orp ora tion.
4

2.3INSTALLATION
Th e ra dio m e term a y b e o p era t e d in a ny p osition with out c o m pro-
misin g a c c ura c y.Th e se nsorpro b e m a y also b e p ositio n e d a t a ny
a ngle.
TABLE1-1 TECHNICALDATA
1.ReadoutUnit
Irra dia n c e R a ng e
DMXA- S eries . ..............................0-19,990 µW / c m2
DMHA- S eries . .............0-199.9 m W / c m2(0-199,900 µW / c m2)
R esolution
DMXA- S eries. ...................................10 µW/ c m2
DMHA- S eries. ......................0.1 m W/ c m2(100 µW / c m2)
Displa y
DMXA- S eries. ........................41
⁄
2digit,7 se g m e nt,
L ED
0.5 in c h (12.7m m) hig h
DMHA- S eries . .......................31
⁄
2digit,7 se g m e nt,
L ED
0.5 in c h (12.7m m) hig h
C o nv ersion R a t e .................3 re a din gsp erse c o n d n o min a l
O v erall A c c ura c y .............................Be tt erth a n ±5%
with refere n c e to NI S Tst a n d a rds
Te m p era ture C o efficie nt .................±0.025%/°C (0 to 50°C )
2. Sensor
S p e ctral R a ng es
DM-254XA,DM-254HA ...............230-280 n a no m eters(n m)
DM-300XA,DM-300HA ...............280-320 n a no m eters(n m)
DM-365XA,DM-365HA ...............320-400 n a no m eters(n m)
DM-450XA,DM-450HA ...............420-480 n a no m eters(n m)
Te m p era ture C o efficie nt ..................±0.20%/°C (0 to 50°C )
3.PowerRequirements
B a tt ery O p era tio n
Fournonre c h arg e a ble ‘‘A A’’ size alk alin e b a tt ery c ellsare in clud e d
assta n d ard.
Fourre c h a rg e a ble ‘‘ A A ’’ size nic a d b a tt ery c ellsa n d a b a tt ery
re c h arg erare a v aila ble asa n o ption.
4.Reference Conditions...... S p e cifie d on C ertific a t e ofC alibra tion.
5.Dimensions
R e a d out Unit
L e n gth ....7.25 in (18.4c m) Width .......3.50 in (8.9c m)
Thickn ess. .....2 in (5.1 c m) Weight ........1 lb (0.45kg)
S e nsor
L e n gth ........3 in (7.6c m) Width ..........2 in (5.1c m)
Thickn ess . ...0.70 in (1.8c m) Weig ht .......1.25 oz (35.4g)
S e nsorC ord L e n gth ................................2 ft (0.6m)
5

SECTION III C ONTROLS, C ONNECTORSAND INDICATORS
3.1 GENERAL
All o p era ting c o ntrols, c o nn e ctorsa n d in dic a torsare d escrib e d in
Ta ble 3-1.Be c o m e fa miliarwith e a c h ite m priorto o p era ting th e
ra dio m e terforth e first tim e.
TABLE3-1 FRONTAND BA CKPANELDESCRIPTION
1.Po w er S witc h: With th e d u a l-o p era tion to g gle swit c h flip p e d to
th e ‘‘P O WE R O N’’ p osition,th e ra dio m e terwill
re m a in a ctiv a t e d until m a nu ally turn e d off.Th e
m eterwill also o p era te w h e n th e switc h ish eld in
th e ‘ ‘M O MENTA R Y’’ p osition,b ut th e swit c h will
a uto m a tic ally return to th e ‘ ‘ O FF’’ p ositio n o n c e
pressure isrele ase d.
2.Num eric alDispla y: Th e digit aldispla y uses L EDsa n d in clud esa ‘ ‘1’ ’
digit a n d 7-se g m e nt ty p e 0-9 digits. Th e last digit is
p erm a n e ntly se t a t ‘ ‘0.’ ’ O v er-ra ng e (orout-of-
ra n g e ) c o n dition isin dic a t e d b y a bla nk displa y,
exc e pt forth e m ost signific a nt ‘‘1.’’
3. R etra c t a ble C ord: Thisc oil c ord c o nn e ctsth e se nsorto th e re a d o ut
unit.
4.C h arg erJ a ck: Use only with re c h arg e a ble b a tt ery c ells. A ny
oth erty p e ofc ell m a y pro d u c e h a zard ousc o n di-
tionsa nd m a y d a m a g e th e instru m e nt.
5. S e nsorWin d o w: S a p phire diffuserto e nsure g o o d c osin e resp o nse.
6.Ba tt ery L e v elWh e n lig hte d,gre e n L ED in dic a t esth a t b a tt ery
In dic a tor L ight le v elisa d e q u a t e .
(Not Illustra t e d)
6

SECTION IV OPERATION
4.1 GENERAL
Thisse ction ofth e m a nu a lc o nt a insinform a tio n re quire d to use a n d
o p era te th e ra dio m et erin a safe a n d pro p erm a nn er.
4.2IRRADIANCEMEASUREMENTPRO CEDURE
a.Be sure th a t thism e terisa p pro pria te forth e sp e c tralre gion of
interest.
b.Pla c e th e se nsora t th e p oint w h ere th e irra dia n c e isto b e m e a-
sure d.
c.Turn on th e lig ht sourc e .
d.Flip th e p o w erswit c h to th e ‘ ‘P O WE R O N’’ or‘ ‘M O MENTA R Y’’ p osi-
tion asd esire d.
e.Th e v a lu e ofth e irra dia n c e ov erth e se nsitiv e are a ofth e se nsorwill
b e displa y e d in micro w a ttsp ersqu are c e ntim eter(D MXA- S eries)
ormilliw a ttsp ersq u are c e ntim eter(D MHA- S eries).
f. R eturn th e p o w erswit c h to th e “ O FF” p ositio n a n d re m ov e th e
se nsorfro m th e lig ht sourc e.
NOTES:Th e le ast sig nific a nt digitsofth e m e asure d irra dia n c e m a y
c h a ng e asth e displa y isb ein g o bserv e d.Th e a m o unt ofv ari a n c e will
d e p e n d o n th e st a bility ofth e light sourc e,with th e c h a ng e b eing
sm allerfortu b ularfluoresc e nt-ty p e la m psa n d larg erforHID (Hig h
Inte nsity Disc h arg e) la m ps.
7
1.PowerSwitch
2.NumericalDisplay
5.SensorWindow
3.Retractable Cord
4.ChargerJack
(Back ofInstrument)

Also,interfere n c e filtersare not p erfe c t b a n d-p a ss filters. Th erefore,ifa n
in a p pro pria te m e asure m e nt isa tt e m p te d (forexa m ple,m e asure m e nt of
sm all a m o untsofUV-B fro m a n int e nse UV-A ra dia tion sourc e orm e a-
sure m e nt ofrela tiv ely sm all a m o untsofUV-A,UV-B orUV-C in sunlig ht),
errorsc a n b e exp e cte d ifa p pro pria te c orre ctionsare not m a d e.
4.2.1REMOTEUSEOFTHESENSOR
To R e m ov e S e nsor:First,rele ase c ord fro m re t aining slot.Th e n slid e
se nsoro ut.D o n ot p ull out se nsorwitho ut first
rele asing c ord,to a void stre tc hin g ofc ord.
To R e pla c e S e nsor: S lid e se nsoru p into re c e p t a cle with c ord d o w n
a n d filt e ru p.Wra p c ord clo ckwise aroun d
re t aining slot. S e e dia gra m insid e fro nt c o v erof
ra dio m e ter.
SECTION V THEORYOFOPERATION
5.1 OVERALL SYSTEM
Th e b asic blo ck dia gra m forth e ra dio m e terissh o wn in Fig ure 5-1.
Figure 5-1 Basic System Block Diagram
5.1.1THEINPUTOPTICS
Th e L a m b ertia n ( C osin e) resp o nse ofth e se nsorh e a d isd esira ble for
m a ny m e asure m e nt a p plic a tions, esp e cially th ose w h ere th e a n gle
fro m th e sourc e to th e d ete ctorisv ari a ble orthose situ a tionsw h ere
OPTIC AL
STA CK DETECTORCURRENTTO
V OLTA GE
C O NVERSIO N
LSI
ANALO G TO
DIGITAL
C O NVERSIO N
NUMERIC AL
DISPLAY
SENSOR
RADIOMETER
LIGHT
CAUTION
Thisradiometerisdesigned forintermittentuse only.Do not
leave the exposed sensorhead underthe lightsource any longer
than nec essary to take m e asurements. Prolo n g e d e xp osure
c a n result in pre m a ture a gin g a n d / orsolariz a tion ofth e se nsor,
n e c essit a tin g m ore fre q u e nt re c alibra tio n to m aint a in a c c ura t e
re a dings. In tim e,su c h exp osure c a n c a use p erm a n e nt d a m a g e to
th e se nsor.
8

th e a n gle fro m th e sourc e is‘‘ exte n d e d,’’ su c h asin th e m e a sure-
m e nt ofa fluoresc e nt la m p a t dist a n c esc o m p ara ble to orshort er
th a n itsle n gth.In th e la tt erc ase,th e ext e nd e d sourc e pro vid esra di-
a tion fro m m a ny a n gles, all ofw hic h m ust b e pro p erly ‘‘w eig ht e d ’’
asto th eir eff e ctiv e n ess on th e pla n e re prese nte d b y th e se nsor
surfa c e .
In a ctu alpra ctic e,it isdiffic ult t o m a k e a se nsorc o nform to th e id e a l
resp onse ov erth e e ntire solid a n gle of2πstera dia ns. Th e se nsor
h e a dspro vid e d with th e D MXA- S eriesa n d D MHA- S eriesra dio m e ters
minimize thispro ble m by using a diffusin g m a t eri al(sa p phire) h a vin g
exc elle nt tra nsmission a t th e v arioussp e ctralre gions, whic h ism ount-
e d close to th e surfa c e ofth e se nsorso th a t th e o bliq u e ra ysare not
o bstru c te d.Th e sp e c tralra ng e issele ct e d by providin g a n a p pro pri-
a t e o p tic alint erfere n c e filt erb efore th e se nsorc ell asse m bly.
5.1.2THESENSORCELL
Photo volt a ic O p era tion
Wh e n a p-n jun ction iso p era t e d with no ext ern ally a p plie d volt a g e ,
it isc onsid ere d to b e o p era tin g in th e p hoto volt a ic m o d e .Un d erthis
zero a p plie d volt a g e c o n ditio n a n d lo w le v elsofin cid e nt lig ht,th e
p-n jun ction will g e n era t e a c urre nt pro p ortion alto th e lig ht p o w er
in cid e nt o n th e a c tiv e surfa c e.Thisp hoto n in d u c e d c urre nt,or
p hoto-c urre nt,will divid e b e tw e e n th e dio d e p aralleld yn a mic resis-
t a n c e a nd th e p arallello a d resist a n c e .Th e dyn a mic resist a n c e is
norm ally a hig h v alu e a n d isa n inv erse exp o n e ntialfun ction offor-
w ard volt a g e .Th e dire c tion ofc urre nt flo w will pro d u c e a volt a g e
a cross th e dio d e th a t o p p osesth e b a n d-g a p p o te ntialofth e p ho-
to dio d e jun c tion,thusforw ard biasin g it.Asa result,th e v a lu e ofth e
dio d e dyn a mic resist a n c e ( R
d) dro psexp on e ntially asth e irra dia n c e
in cre asesa n d th e p hoto g e n era te d volt a g e isa qu asi-lo g arith mic
fun c tion ofdio d e irra dia n c e w h e n th e ext ern allo a d resist a n c e is
c onsid ere d.A n oth erm ajordisa d v a nt a g e isth a t R
dty pic ally h asa
wid e spre a d ofv alu eso v erdiff ere nt pro d u ctio n b a t c h es.
O n e w a y ofa c hie vin g sufficie ntly lo w lo a d resist a nc e a nd elimin a t-
in g th e e ff e ct ofth e dio d e p arallelresist a n c e isto fe e d th e ph o-
to c urre nt into th e virtu algro un d ofa n o p era tion ala m plifier.
Th e o ut put v olt a g e isth e result ofth e p h oto c urre nt b eing driv e n b y
th e a m plifierthrou gh th e fe e d b a ck resistora n d th e in p ut im p e d a n c e
R in= R
f/ A w h ere A isth e o p e n lo o p g a in a n d
R
fth e fe e d b a c k
resistor.
Thiscirc uit h asa lin e arresp onse a n d islo w noise d u e to th e alm ost
c o m plete elimin a tion ofle a k a g e c urre nt with th e zero bias. This
resultsin a pro p ortion alvolt a g e b eing prese nte d to th e sign alc o n di-
tionin g se ction ofth e ele ctro nics.
9

5.1.3 ANALO G TO DIGITALC ONVERTERSECTION
Th e a n alo g-to-digit alc o nv erterusesa larg e-sc a le inte gra t e d ( L S I)
circ uit a n d c h a ng esth e D C v olt a g e into digit alinform a tio n.This
digit a linform a tion isd e c o d e d into 7-se g m e nt inform a tion forth e L ED
displa y.
5.1.4 DISPLAY
Th e DMXA- S eriesra dio m e tersfe a ture a 41
⁄ 2digit L ED displa y th a t
re a dsdire c tly in micro w a ttsp ersq u are c e ntim et er(µW/ c m2),w hile
th e DMHA- S eriesfe a ture a 31
⁄ 2digit L ED displa y th a t re a dsdire ctly in
milliw a ttsp ersqu are c e ntim eter(mW / c m2).
SECTION VIOPERATORSERVICING
6.1 GENERAL
The ra dio m eterisc arefully d esign e d a n d c onstructe d with high qu ality
c o m p o n e nts. By pro vidin g re aso n a ble c are a n d follo win g th e
instru ctionsin thism a nu al,th e userc a n exp e ct a long,usefulservic e
life fro m th e instrum e nt.
6.2 WARRANTY
Th e w a rra nty p olic y forth e D MX A- S eriesa n d D MH A- S eriesra dio m e-
tersisprovid e d on th e C ertific a t e of L imite d Warra nty e n close d se p-
ara t ely with e a c h unit.
NOTE:Forassist a n c e ofa ny kin d ,c o nt a c t th e C usto m er S ervic e
D e p artm e nt a t S p e ctronicsC orp ora tion.In th e U. S .a n d C a n a d a ,
c all toll-fre e 1-800-274-8888.G iv e full d e t ailsofth e diffic ulty a n d
in clud e th e m o d ela n d serialnu m b ersofth e unit a n d th e d a t e of
purc h ase.Ifreturn ofth e ra dio m e terto th e fa ctory isd e e m e d n e c-
essary,ship ping instru c tionswill b e provided.Ifa n estim a t e of
c h a rg esfornonw arra nty w ork oroth erservic e w ork isre q uire d,a
qu ot e will b e furnish e d u p on e v a lu a tio n ofth e unit. S ervic e w ork will
not b e p erform e d with out c usto m era p prov al.
WARNING
Th e follo wing o p era torservicin g instru ctionsare inte n d e d to b e use d
by q u alifie d p erso nn elforlimit e d m ainte n a n c e ofth e ra dio m e ter.
Do notperform any servicing otherthan thatcontained in these
operatorinstructions. R eturn th e unit to th e fa ctory foroth erm ain-
te n a nc e not c o vere d in thisse c tion.
10

6.3SHIPPING
C arefully p a c k th e ra dio m et erin th e origin alship pin g c ont ain era n d
p a ckin g m a t eri als. S hip it pre p a id to th e fa ctory a n d b e sure to insure
th e unit forfull v alu e.
6.4BATTERYC OVERREMOVAL
Th e b a tt ery c o v era t th e b a c k ofth e ra dio m e terc a n b e re m ov e d for
m ainte n a n c e p urp osesb y th e follo win g pro c e d ure:
a.Disc o nn e ct th e c h arg er(ifuse d) fro m th e unit.
b.Turn th e tw o scre wsin th e b a tt ery c o v er c ount erclo c kwise until th e
c o v erisre m o v e d.
c. R e v erse thispro c e d ure w h e n re pla cin g th e c o v er.
6.5BATTERYINSTALLATION AND REPLA CEMENT
Th e ra dio m e terispro vid e d with no nre c h arg e a ble,‘ ‘ A A ’ ’ size alk a-
lin e c ellsasst a n d a rd.Ifre c h arg e a ble nick el-c a d miu m b a tt eriesare
use d,th e S p e ctrolin e D M-15 C 0001 bivolt a g e A C re c h arg erm ust b e
use d.Use ofa ny oth erc h arg erm a y d a m a g e th e m eter. R eferto th e
m arkingso n th e D M-15 C 0001 forp o w ersourc e re q uire m e nts.
Ba tt ery c ellsshould b e re pla c e d asfollo ws:
a. L ift out th e b a tt ery hold erfro m th e ra dio m e tera n d re m o v e th e
hold erfro m th e b a tt ery c onn e c tor.
b.Ta ke out th e old c ellsfro m th e h old er.
c.Insert fourn e w c ells, e nsurin g th a t th e c ellsare inst a lle d a c c ordin g
to th e p olarity d esig n a t e d on th e b a tt ery hold er.FAI L U R E TO D O
S O C A N D A M A G E THE R A DIO METE R .
d.C h e c k th a t th e b a tt ery h old erc o nt a c tsare cle a n a n d m a king
g o o d c o nn e c tion.
e. R e c o nn e c t th e b a tt ery hold erto th e b a tt ery c o nn e c tor.
f. R e pla c e th e b a tt ery h old erin itsc o m p a rtm e nt a n d re pla c e th e
b a tt ery c o v ere nsurin g th a t th e c oil c ord exitsin th e a p pro pria t e
slot.
11

6.6BATTERYCHARGING
Nickel-c a d mium b a tt eriesshould b e re c h arg e d asfollo ws:
a.Be sure th e ra dio m e teristurn e d off.
b.Plug th e ja c k ofth e D M-15 C 0001 re c h a rg erinto th e re c e pta cle a t
th e b a c k ofth e ra dio m e ter.
c. S et th e re c h arg era t th e pro p ervolt a g e a n d plu g it into a n a p pro-
pri a t e A C p o w ersourc e.
d.A p proxim a t ely 12 h oursare re q uire d to fully c h arg e th e b a tt eries.
6.7RECHARGEABLEBATTERYCARE
a.Av oid disc h a rging re c h arg e a ble b a tt eriesc o m ple t ely orle a ving
disc h a rg e d c ellsin th e ra dio m et erforlong p erio dsoftim e.
b.Ensure th a t a ll n e wly p urc h ase d re c h arg e a ble c ellsare c h arg e d
fora t le ast 15 minut esb efore o p era ting th e ra dio m e ter.
6.8PREVENTIVEMAINTENANCE
6.8.1 Daily C are
a.Im m e dia tely cle a n a ll spille d m a t eri alsfro m th e ra dio m e tera n d
wip e dry.Ifn e c essary,m oist e n a cloth with so a p a n d w a t erto
cle a n plastic surfa c esa n d th e se nsorh e a d.Th e se nsorsurfa c e
should b e rinse d with eth a nolto re m o v e a ny resid u also a p a n d / or
org a nic c o nt a min a nts.
b.Wheneverp ossible,a void exp osure orusa g e in are asth a t are
su bje c t to t e m p era ture a n d hu midity extre m es, vibra tio n or
m e c h a nic alsh o ck,d ust orc orrosiv e fu m es, orstrong ele ctric alor
ele ctro m a g n etic interfere n c e .
WARNING
D o n ot a tt e m pt to cle a n thisinstru m e nt wh e n it isc o nn e cte d to th e
c h a rg er.
12

6.8.2 Monthly C are
Verify unit c alibra tio n by p erforming o p era tion alc h e cksusin g kno wn
v alu e sourc es. Ifth e n e e d forre c alibra tio n isin dic a t e d,c ont a c t th e
fa ctory.
6.8.3 SemiannualorAnnualC are
It isre c o m m e n d e d th a t th e ra dio m e terb e return e d to th e fa ctory for
a c o m plete o v erall c h e c k a n d re c alibra tion. R eturn lo n g w a v e units
(365n m) atleastevery 12 months.All oth ersshould b e return e d at
leastevery 6 months.C o nt a c t th e C usto m er S ervic esD e p artm e nt for
ship pin g instru c tionsb efore re turnin g th e unit.In th e U. S .a n d
C a n a d a ,c all 1-800-274-8888.
6.8.4Storage
Wh e n th e ra dio m e terisn ot in use,store it in a lo c a tion fre e fro m te m-
p era ture extremes, d ust orc orrosiv e fu m es, a n d vibra tio n or
m e c h a nic alsh o ck.
6.9TROUBLESHO OTING
6.9.1Ifth e ra dio m e terd o esnot yield sa tisfa c tory results, follo w this
pro c e d ure b efore a tt e m p ting to servic e th e unit:
a. R e vie w a n d c o m ply with th e Irra dia n c e M e asure m e nt Pro c e d ure,
liste d in p ara gra ph 4.2.
b.C h e c k th a t th e irra dia n c e int e nsity ra ng e b ein g m e asure d iswith-
in th e ra tin g ofth e unit.
c.Be sure th a t th e b a tt eriesare pro p erly inst a lle d (referto p ara gra p h
6.5) a n d th a t th e y a re c h a rg e d.
d.Ensure th a t th e e nviro nm e nt in whic h th e ra dio m e terisb eing use d
iswithin th e unit sp e cific a tions.
e.Insp e ct th e se nsorh e a d a n d re a d out unit forvisible d a m a g e.If
a ny d a m a g e iso bserv e d,th e ra dio m e tersh ould b e return e d to
th e fa c tory.Be sure to c o nt a c t th e C usto m er S ervic e D e p artm e nt
a t S p e ctronicsC orp ora tion forship ping instru ctionsb efore return-
in g th e ra dio m e ter.In th e U. S .a n d C a n a d a ,c all toll-fre e 1-800-274-
8888.A qu ot e will b e furnish e d u p o n re c eip t a n d e v a lu a tion ofth e
unit.O ut-of-w arra nty servic e w ork will not b e p erform e d witho ut
c usto m era p pro v a l.
NOTE
Th e c alibra tio n p ot e ntio m et erislo c a t e d insid e th e ra dio m e ter.Do
notattemptto recalibrate thisunit. S p e ctronicsC orp ora tion d o es
not gu ara nt e e th e re a dingsifth e m e terh asb e e n c a libra t e d b y a ny
oth erfa cility.
13

14
6.9.2Ifth e ste pst a k e n in p ara gra p h 6.9.1 d o n ot yield sa tisfa ctio n,refer
to th e Tro ublesho otin g C h art (Ta ble 6-1).Dire ct all oth erre p air a n d
a djustm e nt n e e dsto th e fa ctory.
TABLE6-1 TROUBLESHO OTING CHART
Sym pto m Pro b a ble C a use C ure
1. L o w int e nsity on
nu m eric a ldispla y.
Ba tt eriesnot fully
c h a rg e d,d e fe c tiv e or
m a kin g p o orc o nt a c t.
R e m o v e b a ttery c o v er
a n d c h e c k th a t b a tt er-
iesare m a kin g g o o d
c ont a c t. R eferto 6.5.If
g o o d c o nt a c t ism a d e
c h e ck th e volt a g e .If
sym pto m p ersists
re pla c e b a tt eries.
2.No num eric al
displa y.
a.B a tt eriesnot
inst a lle d.
a. R e m o v e b a ttery
c o v erto asc ert a in
w h eth erb a tt eries
are prese nt.
b.Ba tt eriesinst a lle d
in c orre ctly.
b. R e m o v e b a tteries
a n d c h e ck th a t
p olarity isc orre ct.
c.Ba tt eriesnot
m a kin g c o nt a c t.
c.Ensure th a t g o o d
c ont a c t ism a d e .
C h e ck v olt a g e .If
sym pto m p ersists
re pla c e b a tt eries.
d.Ba tt eriesnot
c h a rg e d.
d. R e c h arg e nic a d
b a tt eriesorre pla c e
alk a lin e b a tt eries.

15
SECTION VII ORDERING INFORMATION
AC CESSORY
DR-75 C arryin g C ase
TABLE7-1
Description PartNo.
BATTE R Y,Alk alin e,‘‘ A A ’’ S ize,1.5 Volt .............C o m m ercial
(Four R e quire d)
BATTE R Y,Nic a d R e c h arg e a ble,‘‘ A A ’ ’ S ize,.............DM-N4
1.25 Volt (Fo ur R e quire d)
BATTE R Y R E C HA R G E R ,Biv olt a g e .................D M-15 C 0001
(115V /60Hz,230V /50Hz)
C A RR YIN G C A S E ....................................D R -75