FSW-140 Series
Plastic Flow Switch
Installation: All NP T threads shou l d be insta l led usi ng a
sui t a ble t h re a d s e a lant (Tef l on ta p e or P e rm ate x “ No m or e
Leak s”). S eal a nt m u st b e k ept o u t of u nit d uri n g in s t al l ati o n.
FSW - 140 Flo w S witc h es Can b e Mo u n te d I n V a rious P o sit i on s
Flo w sett i ngs a r e bas ed o n a v ert i cal posi t ion ( i nle t port do w n) ,
usi n g wat er at +7 0 ° F on i n c rea s ing flow. Slight variat i on in se t
poin t actu ati o n wi l l o c c ur i n o t h er m oun t i ng orie n t at i ons.
Switch Ratings
Cont a c t ra tin g : 10W
Swit c hing V olt a ge ( D C o r A C P e ak ): 20 0 Ma x.
Swit c hing C u r r e nt ( DC o r AC ) : 0 .4 A Ma x.
Carr y Cur rent ( D C or A C ): 0 . 4 A Ma x.
Bre a k d o w n Vol t ag e : 2 3 0 VD C Mi n.
M-5172/1112
Specifications
Wetted Parts
Housing, End Fitting
Hydrolytically Stable Glass Reinforced
Polypropylene
Piston
PPS Composite
Spring
316 Stainless Steel
O-ring
Fluorocarbon
Operating Pressure
200 psi at 70° F, 100 PSI at 212° F
Operating Temperature
-20° to +212°F (100°C)
Filter
100 Micron or better
Set Point Accuracy
20%, Maximum
Set Point Differential
20%, Maximum
Switch
SPST, 10 VA (See “Switch Ratings”)
Inlet/Outlet
3/8” NPT Male or Quick Connect
Electrical Termination
No. 24 AWG, 24” to 26” Polymeric Leads
Dimensions - Quick Disconnect Ports
Dimensions - 3/8” NPT Ports
Thi s p roduc t i s s uita b l e for Cl a ss I a n d C lass I I a p -
pli c atio n s onl y, pe r th e req u i r e m ent s of st and a rd
EN 6 0 730 a n d any a d diti o na l sp e c ifi c requi r em e nts
for a p a r tic u l a r a ppli c atio n o r m ediu m bei n g sens e d. C las s I
com p lia n c e of m etal b odie d u nit s requ i res a g roun d co n n ec -
tio n bet ween the met al bod y an d t h e ea rthi n g s ys t e m of t h e
ins t a lla t i on. Class I co m pli a nce of plas t ic b o d ied unit s in
cont a c t wit h a c ond u ctiv e m edi u m req u i res th a t t he me d i um
be e f f ecti v el y e a r the d so a s to pr o v ide a n e art h ed b arri e r
bet w e e n t he uni t a n d a c cess i bl e areas . Fo r C l ass I I I c o m pl i -
ance , a s u ppl y at s a fet y ext r a -lo w volta ge (S E LV ) mus t be
provi ded. P lea s e co n s ult the F act o r y f o r c omp l ianc e in f o r-
ma t i on o n spec i fic p ar t num b ers .
Important Points: Omega p roduc t s m ust be maintained
and ins t al l ed i n st r i ct acc o rda nc e with th e N a tio nal El e ctri c al
Code an d th e appli c abl e Omeg a pr o d uc t ins t ructi on B ull e tin
that c o v e r s ins tall a tion , ope rati on a n d pro p er m a int enanc e.
Fail u re to ob s erve this i nf o rma t i on m ay r e sult i n s e riou s
inj u r y or d am ages.
For h a z a r d ou s are a a p pli c a tio ns i nvol ving suc h th i ngs a s,
but not l im i ted to , i gnit a b le m i xt u res , c omb u s tib l e dust a n d
fla m m a b le materi a l s, us e an a p pro p r i at e e xpl o sion p r oo f en-
clo s u re or in t r insi call y saf e int er f ace d e v ice .
Pl e a se ad h e re t o th e pr e s sure and t e m per atur e l im itat i ons
sho wn th r o ug h o ut t his c at a log f or o u r l evel and fl o w se n s o r s .
The s e l i m i tati o n s m u s t n o t b e exce e ded. T h e se p r es s ures
and t emp e rat u res tak e int o c o ns i derati on possi b l e syst e m
surge pre s sur e s/ t e m per atur es and t h e i r freq uenci e s.
Sel e cti o n of m a teri a l s fo r c omp a t ibi l it y with t h e med i a is
cri t i cal t o th e li f e a n d op erat i on o f O m ega prod ucts . Ta k e
care in t h e p rop e r sele c tion o f m a t eria l s o f con s truct i on ,
test i ng i s req uired .
NS F - app r o ved sens ors are m ade o f m ater i als app r ove d f o r
potab l e w ater a ppl i cat i ons acc o r di n g to S tan d ard 61.
Sta i nles s stee l is g e n erall y re g arde d a s sa f e b y NS F a nd
FDA .
Lif e expec t an c y of s wit c h c ontac ts v arie s wit h ap p l ic a t ion.
Am bient t e mpe r a ture ch a nge s do aff e c t swit c h se t p o ints ,
sin c e the g rav i t y o f a l i q u i d ca n v a r y wi t h te m per ature .
Our se nsors hav e been desig n ed to r e s ist shock a n d v ibra-
tio n . Ho wever , sho c k a n d vi b rat i on s houl d be mi n i m i zed.
Fil t e r l iqu i d m edi a c on t a ini ng pa r t icul a te and / or d e b ris t o
ensu r e t h e pr o p er o per a t ion of o ur p r o duc t s.
El e c tric a l entri e s and m o u nt i ng poi n ts in a n encl o sed t a n k
ma y r e qu i re l i quid / v a p o r s e ali n g .
Our s e ns o r s m u st n o t b e fie l d -re pai r e d .
Ph ys i cal da m ag e sus t aine d b y product may re nde r it uns e r-
vic e a ble.
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