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TANKSCOPE MODEL B
HYDROCARBON VAPOR INDICATOR MODEL B
INSTRUCTION MANUAL

Phdn I: GENERAL DESCRIPTION

c, +i a

- Tankscope ([fidrpegLb]l vapot'indicator) la thiet bi clim tay duoc ch€ tao

dd do ndng dO'hoi hydrocarbon trong ket. Thiet bi duoc chd tao kin nu6c dd ;ft
dgng trOn tdu.
Gi6i Irun do til 0-207o hoi hydrocarbon tinh bdng thd tich trong khbng khi
hg49 trong m6i trubng kh( tro nhu Nito hoic COZ . Phdn l6n cdc khf ch6y ddu gay

d0 nguy nid* cfia gas ho4c hoi bao ho) trong fnong'hi., /,',J,;!; :",'' ' ' ''i.. , ,,.
Tankscope duoc cap ngudn b&i 8 cuc pin trung (D-Si2e).lvta"h dien r{t don '
fr.,
' ,

giin vd d6ng tin c{y.Thidt bi duoc gin 2 flqg_6 _a_ruesters ind n6 ngin ngta su ph6t
- sample line trong trubrng hop kidm tr:a kh6ng khi nam trong gjdi, han chdy
n6 qua,
nd. ,1 ,;.:., ,15.r'.,.. n,., ,1,_, iy prrr.,l,,J)-/.F!i(,,itl
'
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Khf thfi duoc hrit vdo thiet bi qua sampl. dp-be'b@EriUqlq.iFUin
hft khi ) hoac pump (bom hft kh| ch?y bang ac quy. C6 nhidu loai sample -@6n!
probe
vi d0 ddi kh6c nhau cho ph6p ngudi khai th6c thiet bi dat probe vio k6r kin hoic
hdm h)ng Ad ndm tra bdu kh6ng khi bOn trong.
Ngudi khai thdc Tankscope cdn phii l)m quen vdi 4 phdn ddu cira sdch
hudng d5n niy.

thdn II:,CA|TION ANp LTMITATTON

Tartkscope indicator ModelB duoc thiet ke nhu m6t mdy do ndng c10
Hydlocarbon nhi0u cOng dgng. Str dung n6 dd ph6t hi6n khi hydrocarbon dr6r;g
thudng hodc hoi trong kh0ng khi hoa<' trong m6i trudng khi tro.

CAUI'IoN: Kh6ng dtng Tankscope dd thu nghi€m vdi ACETvLENE, hoic h6n hop
Hydrocarbon trong mOi trudng gidu 0"y.

Thiet _bi se chi ra m6t c6ch tdng qu6t, khOng kh( c6 nguy hidm hay kh6ng
'trOn quan didm tinh bit ch6y. Didu quan trong ld moi thong s6 cira thiei bi phil
duoc ddnli gi6 bang ngudi c6 k! n5,ng vd kinh nghiOm khi dien giii cdc th6ng sd
vdi khia c4nh liOn quan dOn tinh trang dac biOt, an toln thuc hinh, vi c6rrg uiec
dang ti€n hlnh.
- Tht du: Mdi trulng khi chi ra ld khOng c6 nguy hidm ch6y nd .rh.rng v5n c6
thd gey dOc hai cho con ngudi. Mac dir tdu v6n un toan sau khi tidn hanir c6ng viec
nhung viOc d6 lai bat ddu m6t su kh6ng an tohn kh6c b&i hau quA cria n6 gay ra
nhu liln teng nhipt do hoac khuay la canh dudi ddy trong k6t chfa ddu.

Tartkscope khilng tltd pltdt ltiAn kht chdy 6'dqng bui ltodc strottg ntt\.
 Tankscope hoar dQng pht hqp & gi6i han nhiet dQ 14 F-104 F (-i00 c den
400 C ). Tuy nhien didm ZERO ptrii duoc dat & di6u kiQn mOi trudng llm viOc. 0
moi trudng l+nh hon Check Position phli duoc kidm tra lai tung gid.
Taiks;cope rat nhAy clm khi c6 dbng khf thOng irru nire nOn chi sd cdn duoc
doc trong tinh trang ngilng hrit khi thri.
Tinkscope khong duoc thidt ke ad ttrir mxu kh6ng khi c6 dp sudthoilc tt'ortg
cltdn khing.
Taniscope rat nhay cim vdi d0 nghi6ng. Tat ch cic chi s6 phli duoc lay khi
thiet bi & tu thd thing dung.

Tankscope Model B duoc dat trong trii c6 day kho6c qua vai ntn 2 tay cia
ngudi stt dung tu do thao t6c qample probe v) aspirator hoic bgtgiiy-g!9&!9d
pigp-.(l',ri'r lj 't.9;'"i':irir ""(, )
..,,1i-lli Aspirator hqse duoc ndi vdi outlet fitting & ben phii cria thidt bi (hinh 2).
' Kidm rra su thong luu h0 th6ng bang c6ch bit inlet fitting vd quan s6t aspirator
bulb kh6ng phdn! len duoc ruu ttti ta b6p n6. Ndu aspirator bulb khdng phdng
lgn thi kidmira loi uott ctra n6 vh/hoFc h0 th6ng th6ng luu cira thiet bi. Vdn chit
sample line ho6c sample probe vlo itlet fitting g6n & bOn tr6i thiet bi.

Ouv trinh sir duns nhu sau:

1. K6o khod ctra rdi deo vI m& nap ctra thidt bi.
?,; 2. K6o nrim SWTTCH l€n trtn 0d Uat ngudn.
3. Xoay nrim GAS-CHI'CK vd vi trf cHtrcK. Kim d6ng hd s6 chi vho vi tri
CHECK. Ndu kim khong chi t6i vi tri ndy thi didu chinh nfim VOLT . ADJ
cho ddn khi dar rdi vi tri cHEcK. Neu kh6ng didu chinh duoc tdi vi tri cHEcK
. rhi phii thay pin. Ndu thuc hi6n qud kh6 khan thi tham khio phdn TROUBLE
SHOOTING.
4. B6p Aspirator bulb 8 ddn 10 ldn dd inm sach mSu thtr cfr cbn luu trong thidt bi
. .;neu sampling line duoc str dung thr b6p th€m 2ldn cho m6l doan
"-*r ' 'i''"' , ' 3 m6t chidu
dei (lOfeet). : '"i '"' ii' l"'n;'
';:;i:f''' li
5. Xoay nrir CHECK-GAS vd vi tri GAS. Kim ddng h6 chi bdo phii 0. Neu
kirong dting rhi phai didu chinh zERo bang nrim ZtrRO .ADJ.
6. ftidtFi bay gid dA sin s)ng dd hoat dQng. Hrit m6u thri qua thiet bi vi quan s6t
chi s6 tren-d5ng hd cho den khi chi sO dat didm cao nhat. Dung htit khi vl ghi
sd do tai mrlc dn dinh.
i. Sau khi lay sd do tiri th6o probe vh dd noi thodng khi, hrit kh6ng khi sach qua
probe, sample line vi qua thi6t bi dd sric ndng dO kh( cdn luu lai. Lim nhu vAy
dd trdnh su nhAm lin cho c6c ldn thtt tiep theo.

TIA.IITY: NGUYEN TAC.HOA.T DTING

Tankscope Model B ld m6t modified thermal cell unit (khdi td bdo nhiOt)
cluoc iien kgt rrong Wheatsone bridge (cdu diOn tr&). Mach di0n vE trong hinh 4
duoc cap ngudn bang 8 pin tnurg duoc dau song song cira 4 cip pin, m6i
cip 3
volt. Kim d-dng nd cfii bio duoc noi vdi didm gita cira WheaLsone bridge mh n6
duoc cAn blng b6i nrit di€u chinh ZEI{O.ADJ'
'fhermal cell unit (Te bho nhiet ) chira filament (ludi kim ioai m6ng ) duoc
d6t n6ng bang ngudn pin (hinh 5). Khi ch6y c6 ddc tinh toe nhiet kh6c v6i khong
khi vi prra" r&r lrri tri tnong thudng. Nhu v4y hoi HydroCarbon sE gAy ra su thm.
ngu6i iilament vdi mrlc aE mac nhurr. Kdt qui gAy ra sau d6 ld nhiet d0 ctra
fiiament v.) dien tr& ket hqp kh6c nhau. Su thay ddi dien tr& lim mat can biing
didm
Whealsone bridge. Mrlc dQ chenh 10ch duoc chi b6o bAng kim ddng h6 qua
gifta ctra wheatsone bridge. MQt filament tuong sbgc kin trong kh6ng kh( duoc
trong
iap aOi dign (thu6c vd dign) vdi cletector filament ( lu6i kim loai phdt hien)
Wheatsone briclge. Lu6i niy s6 bi nhiet dd cxn bang nhi6t vi inh hu&ng
dien 6p
ottu'g
"ou t6c CHECK duoc srl dung ad bio dim v) didu chinh mfc diOn 6p
rhich trqp Ji qua filament . Su kidm tra mfic dat ruong frng v6i diQn 6p th(ch hop
qua filament buoc chi thi bang kim ddng hd bbi duong thxp hon 167o ndng
dO gas.

Span.oni.ol ( didu tiridn b6c cdu) duoc tao bdi c6c chi6t 6pv6i ddng h6.
Span control duoc didu chinh qua m6t vit xoay trgn mit didu khidn.

P/Ia.N Y. MAITtrNANCtr AND TROUBLtr SHOOTING'

PIN:

H?ng muc bio dudng ddu tien cia Tankscope Model .B ld 8 cuc-pin trung.
Khi m6i tlii pin s6 cap ngidn dir cho 8-10 gid hoat dQng litn tuc. Thinh thoing.
m6i srl au'g-th, s6 k6o Oal tudi rhg. Khi bio quin m6y llu kh6ng str dung c6 thd
th6o pin ra kh6i m6Y.
Kidm rra pintang c6ch k6o cong tic ngudn ON-OFF vd vi tri ON (k6o len).
vi tri nrim CHIiCK-GAS vd vi rri CHtrCK . Neu khong thd didu chinh kim ddng
hd vd vi tr( cHEcK bang nrim vOL'I'.ADJ thr phii thay pin mdi.
Khi thaY Pin thi :
I o An cOng Hc oN-oFF vd vi tri olrF,vi m& kho6 d6y tfi deo-
o L&t nguoc thiet bi l0n, th6o nip ddy ra '
o Th6o b6 8 cuc pin cfr v) thay pin mdi , chri f chidu cira cuc pin.
. LhP lai nip d6y vi k6o khod d6y tdi deo'
o, Bxt m6y rg ui tr( ON vd bio dim rang nrim VOL'I.ADJ c6 thd ditiu
chinh ddng hd dat duoc chi s6 cdn thi0t'

FILAMENT:

Trong trudng hop kim ddng hd tut thap hon thang do v) SOng thd didu
chinli bang i,it'vol,T.ADJ nghla ld detector fiIantenl bi h6ng phli thay
thd. NguoJ toi ti* ddng nd chihet thang do vh kh6ng thd didu chinh xudng
bang irit VO1,T.ADJ nghia h compensator filament (ludi kim loai tu
ng6u) bi h6ng phii thaY th6-
 C6ch thay: M& nap cria thiOt bi vi Lh6o 2 con dc gift mit mdy, nhe nhing
nhAc m[t m6y vh dat lOn nap m6y nhu hinh 7. Nhu vay sE bio v0 duoc filarnent
kh6i h6ng h6c hoac bi dfrt day ndi.
2 filaments du phdng duoc kdm theo mdy vd duoc ddnh dau. Cdi nho cfrr-rg
c6 thd duoc sft dqng nhu Detector filament hodc Compensator filament. Dd thay
th6 Detector filament hoic Compensator filament thi phii thdo 2 con 6c git day
diOn v6i phdn tr0n cira filament head, xoay filament ngudc chidu kim ddng'lid.
Th6o filament du phbng kh6i 6 dd v) thay vio vi tri ctra Detector filament hoic
Compensater filament. DAu lai day diOn tring vi den tuong rrng.
Sau khi thay Detector filament, bit inlet fitting vi b6p Aspirator bulb.
N6u h0 thdng th6ng luu kh6ng bi rd thi Aspirator bulb sd kh6ng phdng l6n trong
khoing 15 giay.
Kim d6ng hd c6 phdn co khi ad aidu chinh ZERO ma c6 thd kidm tra /didu
chinh khi thidt bi ng6t ngudn.

FLOW SYSTEM:

H0 th6ng th6ng luu thiet bi duoc chi thi trong hinh 4 , Mdu thri duoc dua qua
thiet bi bnng Aspirator bulb hodc pump. Tt sample probe vl qua sample line ,
mxu thir duoc di qua phin loc bang bOng, qua flame arrestor , Detector filament
vi qua mOt qua flame arrestor thri hai vd ra ngodi qua Aspirator bulb hoac
pump.
Trucrng hqp chat l6ng duo-c hrit vho trong thiet bi thi phii th6o h0 th6ng
th6ng luu, v0 sinh sach sE v) llm kh6 tnr6c khi dinh srl dung lai thidt bi.

FLOW CONTROL ORrFrCn (16):

Dudng n6i Aspirator bulb c6 16 ad aidu khidn luu ludng gi6. L6 nly c6 thd
" duoc vrn lai ho4.c b6 ra sau khi thdo 6ng ndi. Ndu bi ket thi 16 nly c6 thd duoc
th6ng bang dfly c6p nh6 qua 16.

, DUST FILTtrR: .i-l

' Sttphin rlrng chxm ch4p hodc kh6 phxn biOt cria thidt bi c6 thd do tic pliin
lqc gay ra. phii thuong xuy€n thay phin loc bang c6ch th6o Sample Probe vh
.dirng cd l0 dd th6o inlet fitting vh b6 phin loc cfr thay phin loc mdi.

FLAME, AITRESTtrR:

Thinh thoAng sau mOt thdi gian d)i str dUng, dac bi6t trong mOi tnrdng bdn
holc khi hft ci chAt l6ng vlo m6y thi Flame arrester c6 thd phii v0 sinh hodc
thay thd. Flame arrester duoc thdo r0t ddn giin bang cdch nit ra bdng kim m6 dr\i
.Ndu v0 sinh thi kh6ng duoc ding chlii tdy hydrocarbon vi n5 c6 thd gay inh hudng
nguoc khi doc chi s6. Flame arrester c6 & cl inlet fitting vi:outlet fitting cria
khoang chrla Filament. Inlet flame arrester dugc r'6i tdi bang c6ch th6o
Filament trong khoang trang v) b0 trao ddi nhiet & dudi d6y khoang. Outlet
Flame arrester duoc v6i t6i bang c6ch thdo kh6p n6i Aspirator bulb
 KIi tlmy Flanrc qrrester m6i cdn thdn trong dd n6 kh6ng bi
hu
cautiort:
hdng.

P/rriir V/: CALIBRATION CHI]CK

Phli thuong xuyen hieu chinh Tankscope. Thiet bi hi€u ch]nh.boo-96T-

cylinder (chai goi BUTANE iN NTIROGEN mtr ta de bidt ndlg dO vi
"O "t,,io khi-) ad hieu chinh
calibration check flow control (bO ph?n didu khidn luu lugng
vi mot doan 6ng ndi, nhu chi dln tr0n hinh 8. Calibration check flow control
duoc ndi vdi oi go vi doan 6ng drr,7c ndi gifra check
flow control vh thidt bi'
thidt bi' (viec
van check flow control duoc *a od lugng khi tt chai ga di vlo^
"t
tra vir chinh zERo )' Su
hi6u chinh duoc ph6p tidn h)nh sau khi thidibi duoc kidm
+l-57o cira h6n hop
iriang irng cira J"iifit^li"n gas. duoc thta nhxn lt-ottg klolng.
dtng tO vit
.ntuiron[ chai gas . Ndu t6ctt qui SVo thr phii hieu chinh"Uale c6ch
thd didu chinh duoc bing
nh6 xoay Span control tr6n mit ctra thidt ui. Ndu khong
shooting '
nrit Span thi phii thay Detector filament , Xem phdn'Trouble
')
P/ari'n VIl: ACCESS ORItrS
,l 'F 'l ,12 r' 1'1 i ';l
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FLAME ARRESTERS

Somple r-riro

\
Zcro Adj. \/ ) .qhk.
A spiro I or

Cotlon Fillor
OETECTOR

Somplc Probo

FLOW SYSTEM
(Swllchcr ore shown ln
thr op€roto porltlon)
FIGURE 4 SCHEMATIC OIAGRAM
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