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8/10/2019 Psc Sss Manual
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PSC- SSS I R Sensor
Oper at i on manual
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CE- Conf ormi t y
The product compl i es wi t h t he f ol l owi ngst andar ds:
EMC: EN 61326- 1Saf ety Regul at i ons: EN 61010- 1: 1993/ A2: 1995
The product accompl i shes t he r equi r ements of t he EMC Di r ect i ve 89/ 336/ EECand of t he l ow- vol t age di r ect i ve 73/ 23/ EEC.
Scope of supply
SSS el ect r oni c box, pr e- i nst al l ed sensi ng head ( cabl e l engt h accor di ng t o or der ) , operators manual
You wi l l f i nd t he ser i al number on a l abel on t he el ect r oni c box. The cabl e i sl abel ed wi t h t he ser i al number of t he head.
Al ways use these number s when you cont act t he cust omer ser vi ce concer ni ng
mai nt enance, addi t i onal order of component s, spar e par t s or r epai r s.
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Warr ant y
Each si ngl e pr oduct passes t hr ough a qual i t y pr ocess. Never t hel ess, i f f ai l ur esoccur pl ease cont act t he cust omer servi ce at once.
The war r anty peri od cover s 24 mont hs st ar t i ng on t he del i very date. Af t er t hewarr ant y i s expi r ed t he manuf actur er guarantees addi t i onal 6 mont hs warr ant y f oral l r epai r ed or subst i t ut ed pr oduct component s. War r ant y does not appl y t odamages, whi ch r esul t f r ommi suse or negl ect . The war r ant y al so expi r es i f youopen t he sensi ng head. The manuf actur er i s not l i abl e f or consequent i al damage.
I f a f ai l ur e occur s dur i ng t he war r ant y per i od t he pr oduct wi l l be r epl aced,cal i br at ed or r epai r ed wi t hout f ur t her char ges. The f r ei ght cost s wi l l be pai d byt he sender . The manuf act urer r eserves t he r i ght t o exchange components of t he
pr oduct i nst ead of r epai r i ng i t . I f t he f ai l ur e r esul t s f r om mi suse or negl ect t heuser has t o pay f or t he repai r . I n t hat case you may ask f or a cost est i mat ebef orehand.
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Cont ent
Page
1 Qui ck Ref erence 5
2 Techni cal Dat a 102. 1 Gener al Speci f i cat i ons 102. 2 El ectr i cal Speci f i cat i ons 112. 3 Measurement Speci f i cat i ons 122. 4 Opt i cal Char t s 132. 5 CF- Opt i cs 143 Mechani cal I nst al l at i on 164 El ectr i cal I nstal l at i on 194. 1 Cabl e Connect i ons 19
4. 2 Exchange of t he Sensi ng Head 214. 3 Output s 224. 4 Di gi t al I nt er f aces 234. 5 Funct i onal I nput s 255 Oper at i on 266 Sof t ware SSS connect 296. 1 I nst al l at i on 296. 2 St ar t i ng t he Sof t war e 306. 3 Di agr am Funct i ons 31
6. 4 Conf i gur at i on of t he SSS 376. 4. 1 Si gnal Processi ng 38
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6. 4. 2 Out put Si gnal s 456. 4. 3 Advanced Set t i ngs 48
7 Pr i nci pl e of Oper at i on 508 Emi ssi vi t y 519 Mai nt enance 52
Appendi x A Vi sual Al arms 53Appendi x B Emi ssi vi t y Tabl es 54
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The sensi ng head i s a sensi t i ve opt i calsyst em. Pl ease use onl y t he t hr ead f ormechani cal i nst al l at i on.Avoi d mechani cal vi ol ence on the head t hi s
1 Qui ck Ref erence
Thank you f or choosi ng t he PSC-SSS I nf r ar ed sensor .I n t hi s chapt er you wi l l f i nd concent r at ed i nf or mat i on f or a qui ck st ar t wi t h t heCT sensor .
Comments t o t hi s manualRead t he manual car ef ul l y bef or e t he i ni t i al st ar t - up.
You wi l l f i nd i mport ant i nf or mat i on and notes i n t he grey col oured boxes.
The producer r eser ves t he r i ght t o change t he herei n descr i bed speci f i cat i ons i ncase of t echni cal advance of t he pr oduct .
Mechani cal I nst al l at i onSSS heads ar e equi pped wi t h a metr i cal M12x1- t hr ead and can be i nst al l ed ei t herdi r ect l y vi a t he sensor t hr ead or wi t h t he hel p of t he hex nut ( del i ver ed asst andard) t o t he mount i ng br acket avai l abl e.
Var i ous mount i ng br ackets,whi ch make the adj ust ment oft he sensi ng head easi er, can beaddi t i onal l y or der ed asaccessor i es. Make sur e to keep
t he opt i cal pat h cl ear of anyobst acl es when adj ust i ng t he head t o the obj ect ( see chapt er 2. 4) .
I MPORTAN
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More i nf ormat i on i n chapt er 3
El ect r i cal I ns tal l at i onPl ease open at f i r st t he cover of t he SSS el ect r oni c box ( 4 scr ews) . Bel ow t he
di spl ay ar e the scr ew t er mi nal s f or t he cabl e connect i on.
Pl ease use a power suppl y uni t wi t h an output vol t age of 8 36 VDC/ 100 mA.The st andard del i ver y i ncl udes t he connect ed cabl e of t he sensi ng head t o t heel ect r oni c box. You may shor t en but never l engthen t he cabl e. More i nf ormat i on i n chapt er 4. 1
Head exchangeSensi ng heads of t he SSS ser i es ar e exchangeabl e. Every head has a speci f i ccal i br at i on code, whi ch i s pr i nt ed on t he head cabl e. For a corr ect t emper atur emeasur ement and f unct i onal i t y of t he SSS t hi s cal i br at i on dat a must be st ored i n
t he el ect r oni c box.The cal i brat i on code consi st s of t hree bl ocks wi t h 4 char act er s each.
Use shi el ded cabl es onl y.The sensor shi el d has t o
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Exampl e: EKJ0 0OUD 0A1Bbl ock 1 bl ock 2 bl ock 3
For ent er i ng t he code pl ease press t he Up- and Down- key ( keep pr essed) and then
t he Mode- key.The di spl ay shows HCODE and t hen t he 4 si gns of t he f i r st bl ock. Wi t h Up and Downeach si gn can be changed, Mode swi t ches t o t he next si gn or next bl ock.
More i nf ormat i on i n chapt er 4. 2
Anal og Output sYou can sel ect t he desi r ed anal og out put vi a t he programmi ng keys ( see Tab. 5- 1) .
Output Range Connect i on-Pi n onCT- Board
Vol t age 0 . . . 5V
OUT- mV/ mA
Vol t age 0 . . . 10 OUT- mV/ mA
Accordi ng t o t he chosenout put si gnal t her e ar e
di f f er ent connect i on pi ns on
You wi l l f i nd t he cal i brat i on code ona l abel f i xed on t he head cabl e (neart he el ect r oni c box). I f you shor t ent he cabl e, pl ease make sur e t o notet he cal i br at i on code. The code i s
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VCur r ent 0 . . . 20
mAOUT- mV/ mA
Cur r ent 4 . . . 20mA
OUT- mV/ mA
Thermocoupl e TC J OUT- TCThermocoupl e TC K OUT- TC
Fact ory def aul t set t i ng i s 0- 5 V ( t emper at ur e r ange 0- 500 C) . More i nf ormat i on i n chapt er 4. 3
Di gi t al I nt er f aces (opt i onal )I f you want t o i nst al l an i nt er f ace, pl ease do t he f ol l owi ng: pl ug the i nt er f ace boar d i nt o the pl ace pr ovi ded, whi ch i s l ocat ed besi de the
di spl ay use both M3x5 scr ews f or f i xi ng i t ont o t he el ect r oni c box pl ug the pr eassembl ed i nt er f ace cabl e wi t h the ter mi nal bl ock i nt o t he mal e
connect or of t he i nt er f ace boar d
I f you use the USB- i nt er f ace, t he CT needs no exter nalpower suppl y f or oper at i on i t wi l l be power ed by t heUSB- i nt er f ace.Pl ease i nst al l t he sof t war e CTconnect as descr i bed i nchapt er 6. 1.
More i nf ormat i on i n chapt er 4. 4
I f you use the USB- i nt erf ace boar d or t heRS232- i nter f ace boar d and your own RS232- t o-USB- adapt or you wi l l see t he COM port as avi r t ual COM por t ( VCP) i n your system.Dur i ng t he i nst al l at i on of t he USB dr i ver aCOM por t number wi l l be assi gned t o the VCP( open t he Devi ce Manager t o f i gur e out ) .A t er st ar t i n CTconnect ease ent er t e
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Oper at i onThe programmi ng keys Mode, Up and Down enabl e t he user t oset t he sensor on- si t e. The cur r ent measuri ng val ue or t hechosen f eat ur e i s di spl ayed. Wi t h Mode t he oper at or obt ai nst he chosen f eat ure, wi t h Up and Down the f unct i onalparameters can be sel ected. I f no key i s pressed f or more
t han 10 seconds t he di spl ay aut omat i cal l y shows t hecal cul at ed obj ect t emper at ur e (accor di ng to t he si gnalpr ocessi ng) .
More i nf ormat i on i n chapt er 5
Fact or y def aul t set t i ngTo set t he SSS back t o t he f act or y def aul t set t i ngs, pl ease press at f i r st t heDown- key and t hen the Mode- key and keep bot h pr essed f or approx. 3 seconds.
The di spl ay shows RESET f or conf i r mat i on.
Er r or messages
The di spl ay of t he CT can show t he f ol l owi ng er r or messages:
Pr essi ng the Mode but t on agai n r ecal l s t he l ast cal l edf unct i on on t he di spl ay.
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OVER t emper at ure overf l ow UNDER t emperat ure under f l ow ^^^CH head t emper ature t o hi gh vvvCH head t emperat ure t o l ow
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2 Technical Data
2. 1 Gener al Speci f i cat i ons
Sensi ng head El ect r oni c box
Envi r onment al r at i ng I P65 ( NEMA- 4) I P65 ( NEMA- 4)Ambi ent t emper at ure - 20 180 C ( 20: 1/ 15: 1 head) 0 65 C
- 20 130 C ( 2: 1 head)Storage t emper at ure - 40 180 C ( 20: 1/ 15: 1 head) - 40 85 C
- 40 130 C ( 2: 1 head)Rel at i ve humi di t y 10 95 %, non condensi ng 10 95 %,non condensi ng
Mat er i al st ai nl ess st eel di e cast i ng zi ncDi mensi ons 28 mm x 14 mm 89 mm x 70 mm x 30 mmWei ght 40 g 420 g
Vi br at i on I EC 68- 2- 6: any axi s, 11 200 Hz, 3GShock I EC 68- 2- 27: any axi s, 11 ms, 50G
Cabl e l engt h 1 m ( St andar d) , 3 m, 8 m, 15 mCabl e di amet er 2, 8 mm
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2. 2 El ectr i cal Speci f i cat i ons
Power suppl y 8 VDC 36 VDCCur r ent dr aw max. 100 mA
Out put s/ anal ogChannel 1 ( Obj ect t emperat ure) 0 20 mA or 4 20 mA or 0 5 V or 0 10 Vor t hermocoupl e type J or K
Channel 2 ( Head t emper ature) 0 5 V or 0 10 V; 10 mV/ K or al arm out putRel ai s 2 x 60 VDC/ 42 VACRMS, 0, 4 A; opt i cal l y i sol at ed
( opt i onal modul e)
Out put i mpedancesmA max. l oop r esi st ance 500 ( at 8 - 36 VDC) ,mV mi n. 100K l oad i mpedance
Thermocoupl e 20
Funct i onal i nput s F1 F3; sof t war e pr ogr ammabl e f or t he f ol l owi ngf uncti ons:
- ext er nal emi ssi vi t y adj ust ment ,- ambi ent t emper ature compensat i on,- t r i gger ( reset of hol d f uncti ons)
Di gi t al i nt er f ace USB, RS232, RS485 ( opt i onal modul es)
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2. 3 Measurement Speci f i cat i ons
Sensi ng head 20: 1 Sensi ng head 15: 1 Sensi ng head 2: 1
Spect r al r ange 8 14 m 8 14 m 8 14 mTemperat ure r ange - 40 900 C - 40 600 C - 40 600 COpt i cal r esol ut i on 20: 1 15: 1 2: 1
Response t i me 150 ms ( 95 %) 150 ms ( 95 %)150 ms ( 95 %)
Syst em accur acy 1), 2) 1 % or 1 C 1 % or 1 C
1 % or 1 CRepeat abi l i t y 1) 0, 5 % or 0, 5 C 0, 5 % or 0, 5 C 0, 5 % or0, 5 C
Temperat ure r esol ut i on 3) 0, 1 C 0, 1 C0, 1 C
Temperat ure Coef f i ci ent 1), 4) 0, 05 %/ K or 0, 05 K/ K 0, 05 %/ K or0, 05 K/ K 0, 05 %/ K or 0, 05 K/ K
Si gnal pr ocessi ng peak hol d, val l ey hol d, aver ageEmi ssi vi t y 0, 100 1, 100 ( manual or di gi t al adj ust abl e)
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Tr ansmi ssi on 0, 100 1, 100 ( manual or di gi t al adj ust abl e)
1) whi chever i s gr eat er2) T> - 20 C; ambi ent t emper at ure 23 C 5 C3) at a temper at ure span of 300 C, e. g. t emper at ure r ange 0 C 300 C4) at head t emper at ure 0 180 C ( 0 130 C at 2: 1)
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2. 4 Opt i cal Char t s
The f ol l owi ng opt i cal char t s show t he di amet er of t he measur i ng spot i n dependenceon t he di st ance between measur i ng obj ect and sensi ng head. The spot si ze r ef ers t o90 % of t he r adi at i on ener gy.
Fi g. 2- 1: Opt i cal chart s sensi ng head 20: 1, 15: 1 and 2: 1
The si ze of t he measur i ng obj ect andt he opt i cal r esol ut i on of t he i nf r ar edt hermomet er deter mi ne t he maxi mumdi st ance bet ween sensi ng head andmeasur i ng obj ect .I n or der t o pr event measuri ng er r orst he obj ect shoul d f i l l out t he f i el d of
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2. 5 CF- Opt i cs
The opt i onal CF- l ens al l ows t he measur ement of smal l obj ect s. The mi ni mum spotsi ze depends on t he used sensi ng head:
2: 1 2, 5 mm@ 23 mm 2, 5 mm@ 21 mm wi t h l ami nar ai r purge1)15: 1 0, 8 mm@ 10 mm 0, 8 mm@ 8 mm wi t h l ami nar ai r pur ge 1) 20: 1 0, 6 mm@ 10 mm
0, 6 mm@ 8 mm wi t h l ami nar ai r pur ge 1)
1) measured f r omf r ont edge of t he l ami nar ai r pur ge
Fi g. 2- 2: CF-l ens Fi g. 2- 3: l ami nar ai r pur ge wi t h i nt egr at ed CF-l ens
I f t he CF- l ens i s used, t het r ansmi ssi on has t o be set t o0 78 see cha t er 5 and
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Fi g. 2- 4: 2: 1- head wi t h CF- l ens
Fi g. 2- 5: 15: 1- head wi t h CF- l ens Fi g. 2- 6: 20: 1- head wi t h CF- l ens
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3 Mechani cal I nst al l at i on
CT heads ar e equi pped wi t h a met r i cal M12x1- t hread and can be i nst al l ed ei t herdi r ect l y vi a the sensor t hr ead or wi t h t he hel p of t he hex nut ( del i ver ed asst andard) t o t he mount i ng bracket avai l abl e. Vari ous mount i ng br ackets, whi ch make
t he adj ust ment of t he sensi ng head easi er , can be addi t i onal l y or der ed asaccessor i es.
Fi g. 3-1: Di mensi ons CT head and el ect r oni c box
Make sur e to keep t he opt i calpat h cl ear of any obst acl es
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Mount i ng br acket , adj ust abl e i n Mount i ng bol t wi t h M12x1 t hr ead, Mount i ng f orkwi t h thread M 12x1,one axes adj ust abl e i n one axes adj ust abl e i n2 axes
Fi g. 3- 2: Mount i ng Br acket s
A combi nat i on of mount i ngbr acket and bol t f orms amount i ng bracket , whi ch i s
The mount i ng f or k can becombi ned wi t h t he mount i ngbr acket wi t h t he M12x1- t hr ead.
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The l ens must be kept cl ean at al l t i mes f r om dust , smoke, f umes and ot hercont ami nant s i n or der t o avoi d readi ng er r or s.
These ef f ect s can be r educed by usi ng an ai r purge col l ar . Make sur e t o use oi l -f ree, t echni cal l y cl ean ai r , onl y.
St andard ai r pur ge col l ar, may be combi ned Lami nar ai r pur ge col l ar t he si de ai r
out l et
A combi nat i on of t hel ami nar ai r pur gecol l ar wi t h t hebot t om secti on of t hemount i ng f ork f orms a
The CT- hi gh- t emperat ur e sensi ng heads ar e desi gned t o measur e t emperat ures whi l et ol erat i ng ambi ent t emper atures r angi ng between0 and 180 C ( 20: 1/ 15: 1 head) or 0 and 130 C ( 2: 1 head) . The cabl e bet ween head and
The needed amount ofai r ( approx. 2. . . 10l / mi n. ) depends ont he appl i cat i on and
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wi t h mount i ng br acket ; hose connecti on: 3x5 mm pr event s a cool i ng down of t heobj ect i n shor t
di st ances; hose connect i on: 3x5 mm
Fi g. 3- 3: Ai r pur ge col l ar s
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4 El ect r i cal I nstal l at i on
4. 1 Cabl e Connect i ons
For t he el ect r i cal i nst al l at i on pl ease open at f i r st t he cover of t he CT
el ect r oni c box ( 4 scr ews) . Bel ow t he di spl ay are the scr ew t ermi nal s f or t he cabl econnect i on.
Desi gnat i on:+8 . . . 36VDC Power suppl yGND Gr ound ( 0V) of power suppl yGND Gr ound ( 0V) of i nter nal i n- andout putsOUT- AMB Anal og output head t emperat ure ( mV)OUT- TC Anal og out put t her mocoupl e ( J or K)OUT- mV/ mA Anal og output obj ect t emperat ure ( mV
or mA)F1- F3 Funct i onal i nput sPI NK Power suppl y l aser ( +)GRAY Power suppl y l aser ( )BROWN Temper at ur e pr obe headWHI TE Temperat ure pr obe headGREEN Detect or si gnal ( )
YELLOW Det ect or si gnal ( +)
Fi g. 4- 1: Open CT el ect r oni c box wi t hscr ew t ermi nal s
Power suppl y:
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Pl ease use a power suppl y uni t wi t h an output vol t age of 8 36 VDC/ 100 mA.
Cabl e assembl i ng:The cabl e gl and M12x1, 5 al l ows t he use of cabl es wi t h a di amet er of 3 t o 5 mm.Remove t he i sol at i on f r om t he cabl e ( 40 mm power suppl y, 50 mm si gnal out put s, 60mm f unct i onal i nput s) . Cut t he shi el d down t o appr oxi matel y 5 mm and spread t hest r ands out . Ext r act about 4 mm of t he wi r e i sol at i on and t i n t he wi r e ends.Pl ace t he pr essi ng scr ew, t he rubber washer and the metal washers of t he cabl egl and one af t er t he ot her ( accor di ng Fi g. 4- 2) ont o the pr epar ed cabl e end. Spr eadt he st r ands and f i x t he shi el d bet ween t wo of t he met al washer s. I nsert t he cabl ei nt o t he cabl e gl and unt i l t he l i mi t st op. Screw t he cap t i ght .Every si ngl e wi r e may be connect ed t o the accordi ng scr ew cl amps accor di ng t ot hei r col ors .
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Use shi el ded cabl es onl y.The sensor shi el d has t o be
Fi g. 4- 2: Cabl e assembl i ng
4. 2 Exchange of t he Sensi ng Head
The st andard del i ver y i ncl udes t he connect edcabl e of t he sensi ng head to t he el ect r oni cbox. You may shor t en but never l engthen t hecabl e. To short en t he cabl e may causeaddi t i onal measur i ng er r or s of about 0, 1 K/m. The head i s exchangeabl e.
Ent er i ng t he cal i br at i on code:
Af t er exchangi ng a head thecal i br at i on code of t he new headmust be ent ered i nto the
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Sensi ng heads of t he CT seri es ar e exchangeabl e. Every head has a speci f i ccal i br at i on code, whi ch i s pr i nt ed on t he head cabl e. For a cor r ect t emper at ur emeasur ement and f unct i onal i t y of t he CT t hi s cal i br at i on data must be st ored i nt he el ect r oni c box.
The cal i brat i on code consi st s of t hree bl ocks wi t h 4 char act er s each.
Exampl e: EKJ0 0OUD 0A1Bbl ock 1 bl ock 2 bl ock 3
For ent er i ng t he code pl ease press t he Up- and Down- key ( keep pr essed) and thent he Mode- key.
The di spl ay shows HCODE and t hen t he 4 si gns of t he f i r st bl ock. Wi t h Up and Downeach si gn can be changed, Mode swi t ches t o t he next si gn or next bl ock.
4. 3 Outputs
The CT has t wo out put channel s. Out put channel 1 i s used f or t he obj ectt emper ature. The CTconnect sof t ware al l ows t he progr ammi ng of t hi s out put as anal arm out put .
You wi l l f i nd t he cal i brat i on code on al abel f i xed on t he head cabl e ( near t he
el ect r oni c box) . I f you shor t en t hecabl e, pl ease make sur e t o note t hecal i br at i on code. The code i s needed i f
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Output Range Connect i on- Pi n onCT- Board
Vol t age 0 . . . 5V
OUT- mV/ mA
Vol t age 0 . . . 10V
OUT- mV/ mA
Cur r ent 0 . . . 20mA
OUT- mV/ mA
Cur r ent 4 . . . 20mA OUT- mV/ mA
Thermocoupl e TC J OUT- TCThermocoupl e TC K OUT- TC
Tab. 4- 1: Anal og out puts
Output channel 2 ( connect i on pi n OUT AMB) i s used f or t he head t emper at ure ( - 20 180 C as 0 5 V or 0 10 V) or as al ar m out put . Act i vat i ng t hi s channel as
al arm out put r equi r es t he CTconnect sof t ware. Addi t i onal l y t o t he head t emper at ur eal so the obj ect or el ect r oni c box t emper at ur e can be sel ect ed as al ar m sour ce.
4. 3 Di gi t al I nt er f aces
Accordi ng t o t he chosen out putsi gnal t her e ar e di f f er entconnect i on pi ns on t he CT boar d
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POWER-ro
t/red
DM
-wei/white
DP-grn/green
GND-schwarz/black
Schraubklemme
terminal block
CT sensor s are opt i onal l y equi pped wi t h an USB- ,RS232- , RS485- or r el ai s- i nt er f ace.I f you want t o i nst al l an i nt er f ace, pl ug t hei nt er f ace boar d i nt o the pl ace pr ovi ded, whi ch i sl ocat ed besi de t he di spl ay (see Fi g. 4- 1) . I n t hecor r ect posi t i on t he hol es of t he i nt er f ace mat ch
wi t h t he t hr ead hol es of t he el ect r oni c box. Nowpress t he board down to connect i t wi t h the CT anduse both M3x5 scr ews f or f i xi ng i t . Pl ug thepr eassembl ed i nt er f ace cabl e wi t h t he t ermi nal bl ocki nt o the mal e connect or of t he i nt er f ace boar d. I ncase you want t o use t he del i ver ed cabl e gl andM12x1, 5 f or t he pr eassembl ed cabl e, t he termi nalbl ock has t o be di sassembl ed/ assembl ed. Make suret he wi r i ng i s corr ect ( Fi g. 4- 3) .
Fi g. 4- 3: I nt erf ace cabl es:USB ( l ef t ) , RS232 ( r i ght )
USB- i nt er f ace:
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I f you use t he USB- i nt er f ace, t he CT needs no exter nal power suppl y f or operat i on i t wi l l be power ed by the USB- i nt er f ace.I f an exter nal power suppl y has al r eady been i nst al l ed, t hi s wi l l have no ef f ecton t he f unct i onal i t y of t he CT. Af t er t he i nt er f ace boar d has been i nst al l ed andt he USB- cabl e has been connect ed t o your PC, pl ease i nst al l t he USB dr i ver asdescr i bed i n
chapt er 6. 1. Af t er t hi s you can st art t he CTconnect sof t ware and t he communi cat i onwi l l be est abl i shed.
RS232- i nt er f ace:I f t he RS232- i nt er f ace i s used, t he CT uni t i n any case needs an ext er nal powersuppl y f or oper at i on. Af t er t he i nt er f ace boar d has been i nst al l ed and t he RS232-cabl e has been connected t o your PC, t he communi cat i on wi l l be est abl i shed.
Rel ai s- i nt erf ace:Af t er i nst al l i ng the i nt er f ace boar d as descr i bed above pl ease connect t heel ect r i cal ci r cui t wi t h t he t er mi nal bl ock. A r ed LED shows t he cl osed cur r entswi t ch. The r el ai s boar d pr ovi des t wo f ul l y i sol at ed swi t ches, whi ch have t hecapabi l i t y to swi t ch max. 60 VDC/ 42 VACRMS, 0, 4 A DC/ AC.
The f act or y def aul t set t i ngs f or t he swi t chi ng t hreshol ds ( al arm val ues) are:Al arm 1 = 30 C/ nor m. cl osed ( l ow al arm) and Al arm 2 = 100 C/ nor m. open( hi gh al arm) . To make advanced set t i ngs ( change of l ow- and hi gh al arm) a
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RS485- i nt er f ace:Pl ease i nst al l t he i nterf ace board as descr i bed above and connect t he RS485- USB-adapt er vi a the suppl i ed USB cabl e wi t h your computer. Af t er i t has been connectedt he comput er wi l l r ecogni ze a new USB- devi ce and ( i f connect ed t he f i r st t i me)wi l l ask f or i nst al l at i on of t he accor di ng dr i ver sof t war e. Sel ect Sear ch andi nst al l t he RS485- adapt er USB- dr i ver f r omt he sof t war e CD.
The RS485- USB- adapt er provi des a 2- wi r e hal f - dupl ex mode. Pl ease connect t ermi nal
A of t he adapt er wi t h termi nal A of t he RS485- i nt er f ace of t he f i r st CT and f r omt her e to termi nal A of t he next CT and so on. Wi t h the B t ermi nal s proceed aswel l .
Make sur e, t hat you al ways connect A t o A and B t o B, not r everse. You may run upt o 32 CT uni t s on one RS485- USB- adapt er . The 120R- swi t ch i s t o be turned t o ON atone of t he connect ed CT uni t s, onl y. Each CT uni t connect ed t o t he RS485 needs adi f f er ent mul t i dr op addr ess bet ween 1 and 32 ( see chapt er 6. 4. 3) .
4. 5 Funct i onal I nput s
The t hree f unct i onal i nput s F1 F3 can be programmed wi t h t he CTconnect sof t ware,onl y.
I ndependend f r omt he used i nt erf acet he set t i ng f or baud r at e i n t hesof t war e must be the same as on the
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F1 ( di gi t al ) : t r i gger (a 0 V l evel on F1 r eset s t he hol d f uncti ons)
F2 ( anal ogue) : ext er nal emi ssi vi t y adj ust ment ( 0 10 V: 0 V =0, 1; 9 V
=1; 10 V =1, 1)F3 ( anal ogue) : ext ernal compensat i on of ambi ent t emperatur e ( 0 10 V - 40 900 C; t he r ange i s scal abl e vi a CTconnect sof t ware/ pr eset r ange:- 20 200 C)
F1 F3 ( di gi t al ) : emi ssi vi t y ( di gi t al choi ce vi a t abl e, non- connected i nputr epr esent s hi gh- l evel )hi gh- l evel : +3 V+36 Vl ow- l evel : +0, 4 V36 V
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5 Operat i on
The programmi ng keys Mode, Up and Down enabl e t he user t o set t he sensor on- si t e.The cur r ent measur i ng val ue or t he chosen f eat ure i s di spl ayed. Wi t h Mode t heoperat or obt ai ns t he chosen f eat ur e, wi t h Up and Down the f unct i onal parameterscan be sel ect ed. I f no key i s pressed f or more t han 10 seconds t he di spl ayaut omat i cal l y shows t he cal cul at ed obj ect t emper at ur e ( accor di ng t o t he si gnalpr ocessi ng) .
Factory def aul t sett i ngs:Si gnal out put obj ect t emper ature 0 5 VEmi ssi vi t y 0, 970Tr ansmi ss i vi t y 1, 000Average t i me 0, 2 s
Peak hol d i nact i veVal l ey hol d i nacti veLower l i mi t t emper ature r ange 0 CUpper l i mi t t emper at ure r ange 500 CLower l i mi t si gnal out put 0 VUpper l i mi t si gnal out put 5 VTemperat ure uni t CLower al ar m l i mi t 30 C ( nor m. cl osed)Upper al ar m l i mi t 100 C ( nor m. open)Ambi ent t emperat ure compensat i on head t emper at ure
( 0- 5 V/ - 20 180 C)
Pressi ng the Mode but t on agai n recal l st he l ast cal l ed f unct i on on t hedi spl ay.
The si gnal processi ng f eat ures Peak
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Baud r at e 9, 6 kBaud Fi g. 5- 1: Di spl ay andpr ogrammi ng keys
Di spl ay Mode [ Sampl e] Adj ust ment Range
142.3C
Obj ect t emper ature ( af t er si gnalpr ocessi ng) [ 142, 3 C] f i xed
127CH Head t emper at ure [ 127 C] f i xed
25CB Box t emper ature [ 25 C] f i xed
142CA Curr ent obj ect t emper atur e [ 142 C] f i xed
0-20 Si gnal out put channel 1 [0 - 20 mA] 0- 20 0 20 mA Curr ent l oop 4- 20 4 20 mA Curr ent l oopMV5 0 5 V Vol t age out put MV10 0 10 V Vol t age out put TCJ Thermocoupl e t ype J TCK
Thermo coupl e t ype K
E0.970 Emi ssi vi t y [ 0, 970] 0, 100 . . . 1, 100
T1.000 Tr ansmi ss i vi t y [ 1, 000] 0, 100 . . . 1, 100
A 0.2 Si gnal out put aver age [ 0, 2 s] A- - - - = i nacti ve/ 0, 1 999, 9 s
P---- Si gnal out put peak hol d [ i nacti ve] P- - - - = i nacti ve/ 0, 1 999, 9 s/ P
= i nf i ni t eV---- Si gnal out put val l ey hol d [ i nacti ve] V- - - - = i nacti ve/ 0, 1 999, 9 s/ V = i nf i ni t e
u .0 Lower l i mi t t emper ature r ange [ 0 C] - 40, 0 900, 0 C/ i nact i ve at TCJ - and TCK- out put
n500.0 Upper l i mi t t emper ature range [ 500 C] - 40, 0 900, 0 C/ i nact i ve at TCJ - and TCK- out put
[ 0.00 Lower l i mi t si gnal out put [ 0 mA]accor di ng to t he r ange of t he sel ected out putsi gnal
]20.00 Upper l i mi t si gnal out put [ 20 mA]accor di ng to t he r ange of t he sel ected out putsi gnal
U C Temperat ure uni t [ C] C/ F
| -40.0 Lower al arm l i mi t [ - 40 C] - 40, 0 900, 0 C
||900.0 Upper al arm l i mi t [ 900 C] - 40, 0 900, 0 C
XHEAD Ambi ent t emper at ure compensat i on [ head XHEAD = head t emper at ure/ - 40 900 C as f i xed
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t emper at ure] val ue f or compensat i on/ r eturni ng t o XHEAD ( headt emper at ure) by pr essi ng Up and Down t oget her
M 01
Mul t i dr op addr ess [ 1] ( onl y wi t h RS485I nt erf ace) 01 32
B 9.6 Baud r ate = 9, 6 kBaud 9, 6/ 19, 2/ 38, 4/ 57, 6/ 115, 2 kBaud
Tab. 5- 1: Adj ust ment modes
Factory def aul t set t i ng:To set t he CT back t o t he f act or y def aul t set t i ngs, pl ease press at f i r st t heDown- key and t hen the Mode- key and keep bot h pr essed f or approx. 3 seconds.
The di spl ay shows RESET f or conf i r mat i on.
Err or messages:
The di spl ay of t he CT can show t he f ol l owi ng er r or messages: OVER t emper at ure overf l ow UNDER t emperat ure under f l ow ^^^CH head t emper at ure t o hi gh vvvCH head t emperat ure t o l ow
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6 Sof t ware CTconnect
6. 1 I nstal l at i on
I nser t t he CTconnect I nst al l at i on CD.I f t he aut o run opt i on on your comput er i s act i vat ed t he i nst al l at i on wi zar d wi l lst art aut omat i cal l y. Ot her wi se pl ease st ar t setup. exe on the CD- ROM. Fol l ow t he
i nstr ucti ons of t he wi zard unt i l t he i nstal l at i on i s f i ni shed.The i nst al l at i on wi zar d wi l l pl ace a l aunch i con on t he deskt op and i n t he st ar tmenu [St ar t ] \ Progr ams\ opt r i s gmbh\ ct connect .I f you want t o uni nst al l t he sof t war e f r om your syst em pl ease use t he uni nst al li con i n t he st ar t menu.
USB dr i ver :To use t he CT uni t wi t h USB i nt er f ace pl ease connect t he sensor vi a t he suppl i edUSB connect i on cabl e wi t h a f r ee USB sl ot of your comput er. The oper at i ng syst emwi l l aut o det ect t he new har dware and open a wi zar d. Chose t he aut omat i c
Feat ur es: conf i gur e CT sensor s set up par ameters and adj ust t he
sensor t o your appl i cat i on di spl ay and record temper ature
t r ends
Syst em r equi r ement s: Wi ndows XP, 2000
RS232 or USB i nter f ace (dependson t he i nt er f ace boar d pl uggedi n t he CT)
Har d di sk wi t h at l east 30MByt e f r ee space
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i nst al l at i on and f ol l ow t he i nst r uct i ons. The dr i ver s wi l l be copi ed t o yourcomput er .
Fi g. 6- 1: COM- Por t number i n Devi ce manager wi ndow
6. 2 St ar t i ng t he Sof t war e
Pl ease connect your CT wi t h the USB cabl e to a f r ee USBpor t or wi t h t he ser i al cabl e ( 9- pi n- pl ug) t o a f r eeRS232 port ( choose t he connect i on accor di ng to t he
pl ugged i nt er f ace boar d) .
I f you use the USB- i nt erf ace board or t heRS232- i nter f ace boar d and your own RS232- t o-USB- adapt or you wi l l see t he COM por t as avi r t ual COM por t ( VCP) i n your system.Dur i ng t he i nst al l at i on of t he USB dr i ver aCOM por t number wi l l be assi gned t o t he VCP( open t he Devi ce Manager t o f i gure out ) .Af t er st ar t i n CTconnect l ease ent er t he
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Launch t he CTconnect sof t ware.The def aul t set t i ng f or t he communi cat i on i s: COM1 wi t h 9600 baud.
I f you use t he CT on a di f f er ent por t or wi t h a di f f er entbaud r ate you have to change t he i nt er f ace set t i ngs under
Set up/ I nt er f ace.
Adress mode:no addr ess: Si ngl e sensor operat i on vi a USB/ RS232aut o scan: aut omat i c address sear ch ( RS485
oper at i on)f i xed address: i nput of a known addr ess
Deact i vat i ng Checksum s al l ows compat i bi l i t y t o ol der CT sensors ( pr eset t i ng:acti vat ed) .
Connect i on st at e:I n t he l ower l ef t cor ner t he cur r ent connect i on st at e wi l l bedi spl ayed:
Onl i ne: Appl i cat i on i s pr oper l y connect ed wi t ht he CT/ nor mal dat a exchange
Of f l i ne: No connect i on t o t he CT/ no data exchangeConnect i ng: Connect i on t o a CT uni t wi l l be est abl i shedAddr . xx: onl y dur i ng network operat i on ( RS485) : shows t he cur r ent CT
address
The set t i ng f or baud r at e i n t he sof t ware must be t he same as on
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6. 3 Di agr am Funct i ons
The di agram wi l l be st ar t ed by press i ng t he St ar t but t on or by openi ng a st or eddata f i l e. I n any case t he gr aph shows t he obj ect t emper at ur e.
Temperat ure di spl ays:TObj : The bi g di spl ay and t he ass i gned t emperat ure bar show
t he obj ect t emperat ur e.I f no measur i ng i s st ar t ed t hi s t emper at ur e wi l l be
act ual i zed ever y 200 ms( af t er st art i ng t he measurement : every 20 ms) .
TBox: Di spl ay and t emperat ure bar show t he t emperat ure of
t he el ect r oni c boxTHead: Di spl ay and t emperat ure bar show t he t emperat ure of t he CT headThe val ues f or TBox and THead wi l l be act ual i zed everysecond.
Fi g. 6- 2: Temper atur e di spl ays
Temperat ure bars:The t emperat ure val ues on t he l ef t and on t he r i ght
si de i ndi cat e the range of t he bar gr aph. Above the
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bar you wi l l f i nd t wo mar ker s f or l ow al ar m and hi gh al ar m. I f l ow al ar m i s act i vet he col or of t he bar wi l l change f r om gr een t o bl ue, i f hi gh al ar m i s acti ve f r omgr een t o r ed.
The val ues f or t emperat ure r ange and al arm can be set i n t he menu i t emSetup/ Di spl ay Ranges.
Fi g. 6- 3: Temperatur e bar gr aphsand di spl ay r anges
Both al arms have not hi ng to do wi t h the al armval ues f r om t he CT uni t .
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Fi g. 6- 4: Di spl ays and set t i ng f eat ur es of t he sof t war e
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Time axis:To zoom t he x- axi s set t he cur sor s accor di ng t o t he t i me r ange you are i nt er est edi n. Use both sl i ders under t he di agr am. Af t er you pushed t he Zoom- i n but t on + t hemarked r ange wi l l expand t o f ul l si ze. Wi t h t he Zoom- out but t on you wi l l r eacht he opposi t e ef f ect . Wi t h t he scr ol l er of t he x- axi s you can move t hr ough t he t i mer ange of t he di agr am. The f ul l r ange but t on|| hel ps you t o zoom- out of t he di agr am t o t he f ul l r ange of t he avai l abl e
dat a.
Fi g. 6- 5: Ti me axi s bel ow t he di agr am
Freeze and Cont i nue:Any act i on wi t h t he ti me axi s wi l l set t he di agr am i nt o t he Fr eeze modus. I f youwant t o cont i nue wi t h the l i ve dat a pl ease pr ess t he but t on Cont i nue. The but t on
changes i t s f unct i on bet ween Freeze and Cont i nue. Stoppi ng t he di agr amwi t h t he
The t emperat ureval ues i n t hedi agr am wi l l be
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Freeze but t on wi l l onl y st op t he updat i ng. The appl i cat i on pr oceeds wi t h dat acol l ect i ng i n the backgr ound. To st op t he measurement you have t o pr ess t he but t onSt op.
Temperature axis:The r ange adj ust ment of t he y- axi s depends on t he sel ect ed scal i ng set t i ngs underVi ew/ Set t i ngs. Onl y i f Manual scal i ng i s act i vat ed, bot h sl i der s ar e enabl ed to
set t he upper and l ower t emper at ur e range of t he di agr am ( Fi g. 7- 4) . Both y-sl i der s ar e of equal r ank. The pr evai l i ng hi gher sl i der r epr esent s t he hi gh r angeof t he di agr am and vi ce ver sa.
Recor di ng and pl ay- back of data:To r ecor d t emperat ure data, pl ease act i vat e t he Recor di ng checkbox. UnderRecordi ng I nt er val you can def i ne t he t i me i nt er val of t he r ecor ded val ues( shor t est t i me: 20 ms) .Af t er t he St ar t but t on was pr essed t he appl i cat i on wi l l r ecord t he t emper atur es( TObj , TBox and THead) t o an appr opr i at e dat a f i l e. Af t er you st opped themeasur i ng t he pr ogr am wi l l ask you f or a pat h and f i l ename t o st ore t he f i l e. Thest or ed dat a f i l e (*. dat ) i s r eadabl e wi t h any t ext edi t or and can easi l y bei mport ed i nto MS Excel . To pl ay back t he r ecor ded data open t he data f i l e wi t h t hemenu i t emFi l e/ Open. To zoomt he x- and y- axi s pr oceed i n t he same way l i ke wi t hl i ve dat a.
Exampl e: [ CT- Connect DataFi l e][ 1. 0]Date: 08. 04. 2004
Ti me: 10: 18: 13. 879
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Uni t : C
Ti me TObj TBox THead00: 00: 00. 020 19. 9 28. 4 26. 700: 00: 00. 040 20. 1 28. 4 26. 700: 00: 00. 060 19. 8 28. 4 26. 700: 00: 00. 080 19. 8 28. 4 26. 700: 00: 00. 100 19. 9 28. 4 26. 700: 00: 00. 120 19. 7 28. 4 26. 7
00: 00: 00. 140 19. 8 28. 4 26. 7
Scal i ng set t i ngs:The scal i ng of t he di agram can be set wi t h t he menu i t em Vi ew/ Set t i ngs. Thi s menui t em wi l l open t he f ol l owi ng di al og:
For t he scal i ng of t he y- axi s t hr eeal t er nat i ves ar e avai l abl e:
Aut o- Scal e ( gl obal ) : I f a val ue exceeds t heshown di agr amr ange, t he range wi l l be ext endedt o f i t t he di agr am cur ve. The range wi l l not ber educed agai n. The sl i der s on t he r i ght si de oft he di agr am ar e i nact i vat ed.
Aut o- Scal e ( l ocal ) : I f a val ue exceedst he shown di agr amr ange, t he range wi l l beextended t o f i t t he di agr am cur ve. The r ange wi l lbe reduced agai n i f t he peak val ue i s notdi spl ayed i n t he di agr am anymore. Thi s opt i on
ensur es t he best f i t t i ng of t he cur ve t o t he
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di agr am but i t can cause f l i cker i ng i f t he si gnal i s noi sy. The sl i der s ont he r i ght si de of t he di agr am ar e i nact i vat ed.
Manual l y: I f t hi s opt i on i s act i ve t he scal i ng can be per -f ormed by hand usi ng the sl i der s on t he ri ght - hand si de of t he di agr am.
To prevent odd val ues on t he t emperat ure axi s ( y- axi s) check t he opt i on Round
t emper at ur e axi s.
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6. 4 Conf i gur at i on of t he CT
An essent i al par t of t he sof t war e i s t he par amet er i zat i on of t he CT. For t hi spur pose use t he menu i t emSet up/ Sensor .I n t he t op l i ne you wi l l f i nd t he seri al - number of t he connect ed CT and t hef i r mwar e revi si on.
Most of t he par amet er s have ani mmense ef f ect on t he si gnalout put and f unct i onal i t y oft he sensor . Pl ease doubl e-
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Fi g. 6- 6: Setup di al og wi ndow Signal Processing
The set up di al og consi st s of t hree part s: Si gnal pr ocessi ng: emi ssi vi t y and t r ansmi ssi vi t y cont r ol , ambi ent
cont r ol , post pr ocessi ng Out put si gnal s : out put channel s and al ar m set t i ngs Advanced set t i ngs: head parameters, devi ce adj ust ment , mul t i dr op addr ess
6. 4. 1 Si gnal Pr ocessi ng
I f t he set up di al og i s open, t he f ol l owi ng par amet er s can be adj ust ed (par t Si gnalpr ocessi ng) :
Emi ssi vi t y adj ust ment :There are t hree opt i ons t o set t he emi ss i vi t y:
Fi xed val ue: The val ue can be set by t he edi t boxEmi ssi vi t y.Ext ernal : The val ue i s determi ned by a vol t age on t hef uncti onal i nput pi n F2.
( 010 V: 0 V =0, 1/ 9 V =1, 0/ 10 V
=1, 1)Tabl e: I nput of up t o ei ght emi ss i vi t y val uesand corr espondi ng al arm val ues ( t wo f or eachemi ssi vi t y val ue) i n a mat er i al t abl e. The sel ect i on of
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t he t abul ar val ues occur s by a combi nat i on of l ow- and hi gh- l evel s on t hef unct i onal i nput s F1 t o F3 ( non- connect ed i nput r epr esent s hi gh- l evel ) .
hi gh- l evel : +3 V+36 Vl ow- l evel : +0, 4 V36 V
Edi t i ng t he mat er i al t abl e:Pushi ng t he but t on Edi t mat er i al t abl e cal l s t he mat er i al t abl e di al og:
An emi ssi vi t y val ue and two al arm val ues can be set f or eachent r y. Both al arms A and B are l ogi cal ent i t i es and must beassi gned t o one of f our possi bl e al arm channel s concer ni ngt he f ol l owi ng cr i t er i a:
I f you do not want t o use an al ar m wi t h t he t abl e pl easeacti vat e not speci f i ed.Onl y one al arm ( A or B) can be assi gned t o each al armchannel .An assi gned al ar m val ue over wr i t es t he al ar m val ue set t i ngof t he appr opr i at e al ar m on t he Out put si gnal s t ab.Ot her pr oper t i es l i ke nor mal l y open/ cl ose, al ar m sour ce mustbe def i ned on t he Out put si gnal s t ab.Out put channel 1 and 2 ar e onl y useabl e i n t hi s t abl e i ft hey ar e conf i gur ed as di gi t al on t he Out put si gnal s t ab.
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Emi ssi vi t y cal cul at i on:I f t he cur r ent obj ect t emper atur e i s t he onl y val ue known t o you, you maydet er mi ne t he emi ssi vi t y as f ol l ows:Set t he Emi ssi vi t y mode t o Fi xed Val ue and pr ess t he but t on Cal cul at e Emi ssi vi t y:
Type t he known obj ect t emperat ure i n t he edi t boxRequi r ed t emperat ur e. Press t he but t on Acqui r e data andcal cul at e emi ssi vi t y.
The f i el d Cur r ent Temperat ure shoul d di spl ay t he obj ectt emper at ur e and the f i el d Emi ssi vi t y t he cal cul at edemi ssi vi t y. Press t he OK but t on t he wi ndow wi l l becl osed and t he emi ssi vi t y val ue t r ansf er r ed.
Tr ansmi ss i vi t y adj ust ment :I n t hi s edi t box you can ent er a val ue f or t r ansmi ssi vi t y ( e. g. i f a pr ot ect i vewi ndow i s used or i f t he CF- l ens i s mount ed) .
Ambi ent t emper at ure compensat i on:I n dependence on the emi ssi vi t y val ue a cer t ai n amount of ambi ent r adi at i on wi l l
be ref l ect ed f r omt he obj ect surf ace. To compensate t hi s i mpact , t he CT Connect
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sof t war e pr ovi des t he f eat ur e Ambi ent cont r ol ( mi ddl e of t he wi ndow Si gnalpr ocessi ng) :
i nt er nal ( Head) : The ambi ent t emper at ur e wi l l be t aken f r omt he head-i nt er nal Pt 1000 pr obe ( f act or y def aul t set t i ng) .
ext ernal : The ambi ent t emper atur e wi l l be determi ned by a vol t age ont he f unct i onal i nput - pi n F3
( 0 10 V - 40 900 C; r ange scal abl e) . Wi t h an ext er nal
probe or wi t h a second CT a r eal - t i me ambi ent t emper aturecompensat i on can be real i zed. f i xed val ue: I n t he edi t box Val ue a f i xed val ue can be ent er ed ( i f t he
ambi ent r adi at i on i s const ant ) .
Post pr ocessi ng:
The post processi ng suppl i es some f unct i ons t o process data af t er t he basi ct emper at ur e cal cul at i on. The f ol l owi ng t abl e shows t hese f unct i ons:
Modus Aver age Ti me Hol d Ti me Threshol d Hyst er eseOf fAveragi ng XPeak hol d X XVal l ey hol d X XAdvanced peakhol d
X X X
Advanced val l ey
hol d
X X X
Especi al l y i f t here i s a bi gdi f f erence between obj ect and headt emper ature t he use of Ambi ent
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Tab. 6- 1: Post pr ocess i ng modes and t he used paramet er s
I f t he post pr ocessi ng mode i s Offno post pr ocessi ng wi l l be done.
Aver agi ng:I n t he modeAveraging a pl ai n ar i t hmet i c al gor i t hm wi l l be per f or med to smoot hent he si gnal . The Avg. t i me i s t he t i me const ant . Thi s f unct i on can be combi ned wi t hal l ot her post pr ocessi ng f unct i ons.
Peak hol d:I n t he mode Peak hold t he CT uni t i s wai t i ng f or descendi ng si gnal s. I f t he si gnaldescends t he al gor i t hm mai nt ai ns t he pr evi ous si gnal peak f or t he speci f i ed hol dt i me.
Wi t h t he menu i t emMeasur i ng/Si gnal Processi ng Moni t or you canopen a ut i l i t y t o moni t or t hebehavi or of t he si gnal post
pr ocessi ng.I t al ways shows t he Cur r ent
Temperat ure( w/ o post pr ocessi ng)and t he Pr ocess Tem er at ur e wi t h
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Si gnal wi t h Post pr ocessi ng
Obj ect t emperat ure ( wi t hout Post pr ocessi ng)
Fi g. 6- 7: Si gnal gr aph wi t h Peak hol d ( l ef t ) and Val l ey hol d ( r i ght ) / Hol d t i me = 3 s
Val l ey hol d:I n t he modeValley Hold t he CT uni t wai t s f or ascendi ng si gnal s. I f t he si gnalascends t he al gori t hm mai nt ai ns t he pr evi ous si gnal val l ey ( mi ni mum) f or t hespeci f i ed hol d t i me.
Advanced Peak hol d:I n t he modeAdvanced Peak Hold t he CT uni t wai t s f or l ocal peak val ues. The si gnalmust drop bel ow t he Thr eshol d val ue t o det ect t he next peak ( whi ch must be
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t hr eshol d) . Fur t her more, t he Hyst er ese causes t o onl y accept a new peak, i f t hesi gnal descends by t he val ue of t he hyst er ese.
Fi g. 6- 8: Si gnal gr aph wi t h Advanced Peak hol d: Thr eshol d = 20 C ( l ef t ) / Thr eshol d = 25 Cand Hyst erese = 12 C ( r i ght )
Advanced Val l ey hol d:The mode Advanced Val l ey hol d i s t he i nvert ed f unct i on of Advanced Peak hol d. TheCT uni t wai t s f or l ocal mi ni ma. The si gnal must exceed the Thr eshol d val ue t odetect t he next val l ey ( whi ch must be t hr eshol d) . Fur t her more, t he Hyst er esecauses t o onl y accept a new val l ey, i f t he si gnal ascends by t he val ue of t hehyster ese ( Fi g. 6- 9 r i ght ) .
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Fi g. 6- 9: Si gnal gr aph wi t h Advanced Val l ey hol d: Thr eshol d = 30 C ( l ef t ) / Thr eshol d = 25C and Hyst erese = 12 C ( r i ght )
6. 4. 2 Out put Si gnal s
I f t he set up di al og i s open, t he out put - and al ar m set t i ngs can be done i n t hewi ndow Out put si gnal s.
Over vi ew Al ar m f unct i ons: Out put channel 1 and 2 ( i f set
di gi t al ) Vi sual Al arms ( = col or of LCD-
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Fi g. 6- 10: Setup di al og wi ndow Output signals
Output channel 1:The out put channel 1 i s used f or t he obj ect t emperat ure. To def i ne i t as al armout put , act i vat e di gi t al . Wi t h t he sel ect i on Nor mal l y open/ cl osed you can def i net he out put as Hi gh- or Low- al arm.
Edi t t he t hr eshol d i n t he menu box Al ar m t o set t he t r i gger of t he al ar m.The sour ce of out put channel 1 can not be chosen i t i s al ways TObj ( obj ectt emper at ur e) .
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The f ol l owi ng anal og out put s ( i f anal og i s act i vat ed) ar e avai l abl e: 0- 5 V 0- 10 V 0/ 4- 20 mA Thermocoupl e ( TCJ or TCK)
Af t er you have sel ected t he desi r ed out put ( edi t box: Output mode) , you can adj ust
t he temper ature r ange of t he CT by pushi ng the but t on Adj ust out put sl ope.
Fi g. 6- 11: Exampl e f or set t i ng of t he ranges
I n t he exampl e ( Fi g. 7- 11) t he measurement r ange was def i ned as f ol l ows: 10 C = 2 V
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330 C = 7 V
Af t er you have ent er ed t he val ues push t he Check but t on. The resul t wi l l bevi sual i zed i n the di agr am. You may addi t i onal l y check t he ranges i n the f i el dLi mi t s ( t emper at ur e and out put si gnal ) .
Out put channel 2:Thi s channel i s normal l y used as out put f or t he head t emperat ure ( THead) , whi chequal s t he ambi ent t emper at ure. The sour ce can al so be set t o TObj or TBox. Thechannel can al so be used as al arm channel ( same pr ocedur e as out put channel 1) .
The Range can be swi t ched between 0- 10 V and 0- 5 V f or anal og mode and al armmode ( di gi t al ) r especti vel y.
Al ar m 1 and 2 ( Vi sual Al ar ms) :The al arms, set under Vi sual al arms are avai l abl e vi a t he opt i onal r el ay i nt er f ace
boar d and as vi sual al ar ms ( change of col or of t he LCD backl i ght ) . The sel ect i onnormal l y open/ cl ose def i nes t he al ar m as Hi gh- or Low- al ar m. I n Sour ce you canchoose bet ween t he si gnal s TObj , THead and Tbox.Both al ar ms wi l l cause a col or change of t he LCD di spl ay:
bl ue: al ar m 1 acti ve r ed: al ar m 2 acti ve gr een: no al ar m act i ve
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I n Appendi x A you wi l l f i nd a t abl e wi t h al l possi bl e al ar m combi nat i ons. Thest andar d mode f or t he vi sual i zat i on of t he al arms can be reset wi t h t he but t onSt andar d vi sual al ar ms.
The but t on Bl ue backl i ght i s a preset t i ng t o achi eve a permanent bl ue backl i ght ont he LCD di spl ay. Pushi ng t hi s but t on wi l l cause t he f ol l owi ng:
both al ar ms wi l l be set t o normal l y open,
al ar m l i mi t s wi l l be set t o t he l ower and upper measurement r ange l i mi t oft he connect ed CT,Now al ar m 1 i s per manent act i ve [ bl ue] and al arm 2 i s permanent i nact i ve.
6. 4. 3 Advanced Set t i ngs
I f t he setup di al og i s open, t he wi ndow Advanced set t i ngs al l ows t he set t i ng oft he f ol l owi ng par amet ers:
Head- par ameters:Thi s f unct i on al l ows t he exchange of sensi ng heads. The 12- di gi t code cont ai ns t hecal i br at i on dat a of t he head. For a corr ect t emperat ur e measurement make sure t oent er t he code ( l abel ed on each head cabl e) i nt o t he el ect r oni cs wi t hout mi st akes.
The f act or y set t i ng i ncl udes t he enter i ng of t he code a change of t hi s set t i ng( butt on Change Head Par ameter) i s onl y necessar y, i f t he head wi l l be exchanged.
Al l al ar ms (al ar m 1, al ar m 2, out putchannel 1 and 2 i f used as al ar m out put )have a f i xed hyst erese of 2 K.
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Fi g. 6- 12: Advanced set t i ngs Change of t he head parameters
Uni t adj ust ment :For cer t ai n appl i cat i ons or under cer t ai n ci r cumst ances a t emper at ur e of f set or achange of t he gai n f or t he temperat ur e curve may be usef ul . The f actory def aul tset t i ngs f or Of f set and Gai n ar e:
Of f set : 0, 0 K Gai n: 1, 000
Mul t i dr op- addr ess:
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I n combi nat i on wi t h t he RS485 i nterf ace you can bui l d a network of sever al CTs( max. 32 sensors) .For t he di gi t al communi cat i on each sensor must have i t s own addr ess.
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7 Pr i nci pl e of Oper at i on
Basi cs of I nf r ar ed Ther momet r y:Dependi ng on t he t emper ature each obj ect emi t s a cer t ai n amount of i nf r aredr adi at i on. A change i n t he temperat ur e of t he obj ect i s accompani ed by a change i nt he i nt ensi t y of t he radi at i on. For t he measur ement of t her mal r adi at i on
i nf r ared t her momet r y uses a wave- l ength rangi ng bet ween 1 and 20 m.The i nt ensi t y of t he emi t t ed r adi at i on depends on t he mat er i al . Thi s mat er i alcont i ngent const ant i s descr i bed wi t h t he hel p of t he emi ssi vi t y whi ch i s a knownval ue f or most mat er i al s ( see encl osed t abl e emi ssi vi t y).
I nf r ar ed t her momet er s ar e opt oel ect r oni c sensors. They cal cul at e t he sur f acet emper at ur e on t he basi s of t he emi t t ed i nf r ar ed r adi at i on f r om an obj ect . Themost i mport ant f eat ur e of i nf r ar ed ther momet ers i s t hat t hey enabl e t he user t omeasure obj ects cont act l ess. Consequent l y, t hese pr oducts hel p t o measure thet emper at ur e of i naccessi bl e or movi ng obj ect s wi t hout di f f i cul t i es. I nf r ar ed
t her momet er s basi cal l y consi st of t he f ol l owi ng component s:- l ens- spect ral f i l ter- det ect or- el ectr oni cs (ampl i f i er/ l i neari zat i on/ s i gnal pr ocessi ng)
The speci f i cat i ons of t he l ens deci si vel y determi ne t he opt i cal path of t hei nf r ar ed t her momet er , whi ch i s char act er i zed by t he rat i o Di st ance t o Spot si ze.
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The spect r al f i l t er sel ect s t he wavel engt h r ange, whi ch i s r el evant f or t het emperat ur e measurement . The detector i n cooperat i on wi t h t he pr ocessi ngel ectr oni cs tr ansf or ms t he emi t t ed i nf r ar ed r adi at i on i nt o el ectr i cal si gnal s.
8 Emi ssi vi t y
Fi ndi ng t he Emi ssi vi t y of an Obj ect :The i nt ensi t y of i nf r ar ed r adi at i on, whi ch i s emi t t ed by each body, depends on t het emper at ur e as wel l as on t he radi at i on f eat ur es of t he sur f ace mat er i al of t hemeasur i ng obj ect . The emi ssi vi t y ( Epsi l on) i s used as a mat er i al const antf act or t o descr i be t he abi l i t y of t he body t o emi t i nf r ar ed ener gy. I t can r angebetween 0 and 100 %. A bl ackbody i s t he i deal r adi at i on sour ce wi t h anemi ssi vi t y of 1, 0 wher eas a mi r r or shows an emi ssi vi t y of 0, 1.I f t he emi ssi vi t y chosen i s t oo hi gh, t he i nf r ar ed t her momet er may di spl ay at emper at ure val ue whi ch i s much l ower t han the r eal t emper ature assumi ng t he
measur i ng obj ect i s war mer t han i t s sur r oundi ngs. A l ow emi ssi vi t y ( r ef l ect i vesur f aces) car r i es t he r i sk of i naccur at e measur i ng r esul t s by i nt er f er i ng i nf r ar edr adi at i on emi t t ed by backgr ound obj ect s ( f l ames, heat i ng syst ems, chamott es) . Tomi ni mi ze measuri ng er r ors i n such cases, t he i nst al l at i on shoul d be perf ormed ver ycar ef ul l y and t he sensor shoul d be pr ot ect ed agai nst r ef l ect i ng r adi at i on sour ces.
To deter mi ne an unknown emi ss i vi t y use t he f ol l owi ng procedure:
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- Fi r st , det er mi ne the act ual t emper at ur e of t he measur i ng obj ect wi t h at her mocoupl e or cont act sensor . Second, measure the t emper ature wi t h t hei nf r ar ed t her momet er and modi f y t he emi ssi vi t y unt i l t he di spl ayed resul tcor r esponds t o t he act ual t emper at ur e.
- I f you moni t or t emper atures of up t o 260 C you may pl ace a speci al pl ast i cst i cker ont o the measur i ng obj ect , whi ch cover s i t compl et el y. Now set t heemi ssi vi t y t o 0, 95 and t ake t he temper at ur e of t he st i cker . Af t er war ds,
det ermi ne t he t emper ature of t he adj acent area on t he measur i ng obj ect andadj ust t he emi ssi vi t y accor di ng t o t he val ue of t he t emper at ur e of t hest i cker .
- Cove a par t of t he sur f ace of t he measur i ng obj ect wi t h a bl ack, f l at pai ntwi t h an emi ssi vi t y of 0, 98. Adj ust t he emi ssi vi t y of your i nf r ar edt hermometer t o 0, 98 and take t he t emperatur e of t he col ored sur f ace.Af t erwards, determi ne t he t emperat ur e of a di r ect l y adj acent area and modi f yt he emi ssi vi t y unt i l t he measured val ue cor r esponds t o t he t emper at ur e oft he col or ed sur f ace.
Charact er i st i c Emi ssi vi t i es:I n case none of t he methods ment i oned above hel p to det ermi ne t he emi ssi vi t y youmay use t he emi ssi vi t y t abl e i n Appendi x B. These are average val ues, onl y. Theact ual emi ssi vi t y of a mat er i al depends on t he f ol l owi ng f act or s:
- t emper at ure- measur i ng angl e- geomet r y of t he sur f ace- t hi ckness of t he mat er i al- const i t ut i on of t he sur f ace ( pol i shed, oxi di zed, r ough, sandbl ast )
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- spect r al r ange of t he measur ement- t r ansmi ssi vi t y ( e. g. wi t h t hi n f i l ms)
9 Mai ntenance
I n case of probl ems or quest i ons whi ch may ar i se when you use the CT, pl ease
cont act our servi ce depar t ment . The cust omer servi ce st af f wi l l support you wi t hquest i ons concer ni ng t he opt i mi zat i on of t he work wi t h t he i nf r ar ed t her momet er ,cal i br at i on pr ocedur es or cust omer r el at ed adj ust ment s of t he pr oduct and wi t hrepai rs .
The l ens of t he head can be cl eaned wi t h a sof t , humi d t i ssue. Never use cl eani ngcompounds whi ch cont ai n sol vent s ( nei t her f or t he head, nor f or t he cabl e andel ectr oni c box) .
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Appendi x A Vi sual Al arms
Al arm 1 Al arm 2 Al armstatus
normal ly
t emperat ur e
normal ly
t emperat ur e
1 2
Bl ueLED
Gr eenLED
RedLED
Preset
Cl ose Bel ow Open Bel ow 1 0 On Of f Of f Standard vi sualal arms
Cl ose Bel ow Open Above 1 1 On Of f On Standard v isualal arms
Cl o s e Above Open Bel o w 0 0 Of f On Of f Standard vi sualal arms
Cl ose Above Open Above 0 1 Of f Of f On Standard vi sualal ar ms
Cl ose Bel ow Cl ose Bel ow 1 1 On Of f On
Cl o se Bel o w Cl o se Above 1 0 On Off Off
Cl o se Above Cl o se Bel o w 0 1 Of f Of f On
Cl ose Above Cl ose Above 0 0 Of f On Off
Open Bel ow Open Bel ow 0 0 Of f On Off
Open Bel ow Open A bove 0 1 Of f Of f On
Open Above Open Bel o w 1 0 On Of f Of f Bl ue backl i ght
Open Above Open Above 1 1 On Off On
Open Bel ow Cl ose Bel ow 0 1 Of f Of f On
Open Bel o w Cl o se Above 0 0 Of f On Off
Open Above Cl os e Bel ow 1 1 On Of f On
Open Above Cl ose Above 1 0 On Off Off
The f i r st f our l i nes r epresent t he st andard mode f or vi sual i zi ng t he al arms ( i nconnect i on wi t h TObj as sour ce) on t he LCD- di spl ay (al ar m 1: Low- al ar m [ bl ue] ;al arm 2: Hi gh- al arm [ red] ) . I f no al arm i s acti vat ed t he di spl ay col or i s green.
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Appendi x B Emi ssi vi t y Tabl es
METALSMat er i al Emi ssi vi t y
1, 0 m 1, 6 m 5, 1 m 8 14 mAl umi ni um
non oxi di zed
0, 1- 0, 2 0, 02- 0, 2 0, 02- 0, 2 0, 02- 0, 1
oxi di zed 0, 4 0, 4 0, 2- 0, 4 0, 2- 0, 4Leg. A3003, oxi di zed 0, 4 0, 4 0, 3
r oughened 0, 2- 0, 8 0, 2- 0, 6 0, 1- 0, 4 0, 1- 0, 3pol i shed 0, 1- 0, 2 0, 02- 0, 1 0, 02- 0, 1 0, 02- 0, 1
Leadpol i shed
0, 35 0, 05- 0, 2 0, 05- 0, 2 0, 05- 0, 1
r ough 0, 65 0, 6 0, 4 0, 4oxi di zed 0, 3- 0, 7 0, 2- 0, 7 0, 2- 0, 6
Chrome 0, 4 0, 4 0, 03- 0, 3 0, 02- 0, 2I ron
oxi di zed0, 7- 0, 9 0, 5- 0, 9 0, 6- 0, 9 0, 5- 0, 9
non oxi di zed 0, 35 0, 1- 0, 3 0, 05- 0, 25 0, 05- 0, 2mol t en 0, 35 0, 4-0, 6
I r on, cast edoxi di zed
0, 9 0, 7- 0, 9 0, 65- 0, 95 0, 6- 0, 95
non oxi di zed 0, 35 0, 3 0, 25 0, 2mol t en 0, 35 0, 3- 0, 4 0, 2- 0, 3 0, 2- 0, 3
I r on, f or gedbl unt
0, 9 0, 9 0, 9 0, 9
Gol d 0, 3 0, 01- 0, 1 0, 01- 0, 1 0, 01- 0, 1Magnesi um 0, 3- 0, 8 0, 05- 0, 3 0, 03- 0, 15 0, 02- 0, 1
Haynes 0, 5- 0, 9 0, 6- 0, 9 0, 3- 0, 8 0, 3- 0, 8
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al l oyI nconel
oxi di zed0, 4- 0, 9 0, 6- 0, 9 0, 6- 0, 9 0, 7- 0, 95
sandbl ast 0, 3- 0, 4 0, 3- 0, 6 0, 3- 0, 6 0, 3- 0, 6el ect r o pol i shed 0, 2- 0, 5 0, 25 0, 15 0, 15
Copperpol i shed
0, 05 0, 03 0, 03 0, 03
Materi al Emi ssi vi t y1, 0 m 1, 6 m 5, 1 m 8 14 m
r oughened 0, 05- 0, 2 0, 05- 0, 2 0, 05-0, 15 0, 05- 0, 1oxi di zed 0, 2- 0, 8 0, 2- 0, 9 0, 5- 0, 8 0, 4- 0, 8Br ass
pol i shed0, 35 0, 01- 0, 05 0, 01-0, 05 0, 01-0, 05
r ough 0, 65 0, 4 0, 3 0, 3oxi di zed 0, 6 0, 6 0, 5 0, 5
Mol ybdenumoxi di zed
0, 5- 0, 9 0, 4- 0, 9 0, 3- 0, 7 0, 2- 0, 6
non oxi di zed 0, 25- 0, 35 0, 1- 0, 3 0, 1- 0, 15 0, 1Monel ( Ni - Cu) 0, 3 0, 2- 0, 6 0, 1- 0, 5 0, 1- 0, 14
Ni ckeloxi di zed
0, 8- 0, 9 0, 4- 0, 7 0, 3- 0, 6 0, 2- 0, 5
el ectr ol yti c 0, 2- 0, 4 0, 1- 0, 3 0, 1- 0, 15 0, 05- 0, 15Pl at i num
bl ack0, 95 0, 9 0, 9
Mercury 0, 05- 0, 15 0, 05-0, 15 0, 05-0, 15Si l ver 0, 04 0, 02 0, 02 0, 02
St eelcol d- rol l ed
0, 8- 0, 9 0, 8- 0, 9 0, 8- 0, 9 0, 7- 0, 9
heavy pl ate 0, 5- 0, 7 0, 4- 0, 6pol i shed pl ate 0, 35 0, 25 0, 1 0, 1
mol t en 0, 35 0, 25- 0, 4 0, 1- 0, 2oxi di zed 0, 8- 0, 9 0, 8- 0, 9 0, 7- 0, 9 0, 7- 0, 9
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r ust l ess 0, 35 0, 2- 0, 9 0, 15- 0, 8 0, 1- 0, 8Ti t ani umpol i shed
0, 5- 0, 75 0, 3- 0, 5 0, 1- 0, 3 0, 05- 0, 2
oxi di zed 0, 6- 0, 8 0, 5- 0, 7 0, 5- 0, 6Wol f r am
pol i shed0, 35- 0, 4 0, 1- 0, 3 0, 05- 0, 25 0, 03- 0, 1
Zi ncoxi di zed
0, 6 0, 15 0, 1 0, 1
pol i shed 0, 5 0, 05 0, 03 0, 02
Ti nnon oxi di zed 0, 25 0, 1-0, 3 0, 05 0, 05
NON METALSMat er i al Emi ssi vi t y
1, 0 m 2, 2 m 5, 1 m 8 14 m Asbest os 0, 9 0, 8 0, 9 0, 95Asphal t 0, 95 0, 95Basal t 0, 7 0, 7
Concr ete 0, 65 0, 9 0, 9 0, 95I r on 0, 98Soi l 0, 9- 0, 98Pai nt ( non al kal i ne) 0, 9- 0, 95Gypsum 0, 4- 0, 97 0, 8- 0, 95
Gl asspl at e
0, 2 0, 98 0, 85
mel t 0, 4- 0, 9 0, 9Rubber 0, 9 0, 95Wood, natur al 0, 9- 0, 95 0, 9- 0, 95Li mest one 0, 4- 0, 98 0, 98
Car bor undum 0, 95 0, 9 0, 9
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Cerami c 0, 4 0, 8-0, 95 0, 8-0, 95 0, 95Gr i t 0, 95 0, 95
Car bonnon oxi di zed
0, 8- 0, 9 0, 8- 0, 9 0, 8- 0, 9
gr aphi t e 0, 8- 0, 9 0, 7- 0, 9 0, 7- 0, 8Pl ast i c t r anspar ent
>0, 5 m 0, 95 0, 95
Paper ( any col or) 0, 95 0, 95Sand 0, 9 0, 9
Snow 0, 9Fabr i c 0, 95 0, 95Wat er 0, 93