Omega Products FTB-422 Installation Manual
FTB-420 Series
.86”
(22mm)
1.78”
(45 mm)
Low Flow Turbine
M-5171/1112
Prior to In s t a l l a t i on, c o n f i r m syst e m v e r s u s se n s o r sp e c i f i c a t i o n s a n d me d i a co m p a t i b i l i t y of s e n s o r . Th e s yst em
nee ds to be fi l t e r e d to 50 mi c r o n s pr i o r to th e se nso r, an d pu l s e s / w a t e r ha m m e r ef f e c t s sh oul d be mi ni mize d to pr e v e n t
uni t damage. O b s e r v e ar r o w on bo t tom of u n i t fo r co rrect i n l e t an d outlet p o r t . Se n s o r ca n b e mo unted in a n y h o r i z o n t a l ,
vert ic al, or sk e w e d ori e ntation. C orrectl y i n stalled, the se n s o r w o rk s m a i n t e nance -f r e e.
Insta l la t i o n
1/4 " N P T Un i t s : A p p l y a sp a rse a m o u n t of t h r e a d s e a l a n t (P e rm a t e x " N o Mo re L e a k s " ®) o r T e f l o n ® tape t o m ale t h r e a d s .
In s ure t h a t s e a l a n t d o e s no t e n t e r i n t o the t u r bi n e a n d b e a r i n g in t e rnal a r e a . H a n d -t ighten un i t i n pl a c e. T u r n a n additional 1 / 4 t u r n t o pr o v i d e s e a l . If s e a l l e a k s , tu rn a n a d d i t i o n a l 1/4 t u r n u n t i l leak s t o p s . Do no t e x c e e d o ne ad ditional t u r n
tot al.
G 1/4 U n i t s : G 1 / 4 u n i t s m ate w i t h a f l a t f a c e seal w a s h e r ( 7 0 s h o r e , 7 mm I D , 1 3 mm O D , 2 , 0 mm t h i c k ) s i m i l a r t o a g a r den hos e arrangement. T hi s a rr a ngement r eq u i r e s no s ealants; ha n d -t i g h t enin g sho uld be su f f i c i e nt for se a l i n g .
Elect r i c a l / O u t p ut Signal
The ou tput si gn a l i s a squ are wave sign al , wh o se frequenc y var ie s l i n earl y with fl o w rate. An extern al p ul l -u p r e s i s t o r
(us er - s u pplied ) is req ui r e d t o i n s u re that t h e o p en c o l l ector will si nk l e s s t han 20 mA .
The pr o d u c t i s de si g n e d and m anufa ctu r ed in a c c o r d a n c e w i t h S ound En g i n e e r i n g P r a c t i c e a s de fi ned by t h e P r e s s ur e
Equipm en t Di rective 97 /23/E C. Th i s pr o duct m u s t no t be us ed as a “s a f e t y ac c e s s o r y ” a s de f i n e d by th e Pressure E q u i p ment D i r e c t i v e , A r t i c l e 1, P arag ra p h 2 . 1 . 3 . Th e p r e s e n c e of a CE Ma r k on t h e unit d o e s no t r e l a t e to t h e Pr e s s u r e E q u i p ment D ir e c tive.
Impo r t a n t P o i n ts:
Produ ct m u s t b e m a i n t a i n e d a nd i n s t a l l e d i n s trict a c c o r d a n c e w i t h
the N a t i o n a l Electrical C o d e an d OM E G A t e c h n i c a l br o c hur e an d in stru ction b u l l e t i n . F ailure to ob s e r v e t h i s wa r n i n g c o u l d re s u l t i n s e r i ous i njuries o r d a m a g e s .
Press ure and temperature li m i t a t i ons sh ow n on in di v i d ual catal og
pag es a nd dra wings f o r t he s pe c i f i e d flow se n sors must
not be e xceeded.
Selecti on of mater ia l s f o r compa t i bili t y wi th the m e dia is cri ti c a l t o t he
life an d ope ration of OME GA flow s ens ors. Tak e care in the p r o p e r
selec ti on of m at e ri a l s o f construction; p articularl y wett ed m a t e ri a l s .
Fl ow s e n s o r s ha v e be en d e s i g n e d to resist s h o c k an d v i b r a t i o n ; h o w ever , shock a n d v i b r a ti on s hould be minimized .
Liqu id m e d i a c o n t a i n i n g p a r t i c u l a t e a n d / o r d e b r i s sho uld b e f i l t e r e d t o
ens ure pro per opera ti o n of O ME G A p r oducts.
Fl ow s enso rs must not b e field repaire d.
Ph ys ical da m a g e su s t a i n e d by the product ma y re n d e r it un s e r v i c e a ble.
Wetted Parts
Operating Pressure
Burst Pressure
Operating Temperature
Viscosity
Filter
Input Power
Output
Accuracy
Repeatability
Electrical Connection
Specifications
Body: Nylon 12
Turbine: Nylon 12
Composite Bearings: PTFE/15% Graphite
350 psi (24 Bar)
1400 psi (100 Bar)
-4° to 212°F (-20° to 100°C)
32 to 80 SSU (1-15 Centistokes)
< 50 Microns
5-24 VDC @ 8 mA
NPN Sinking Open Collector @ 20 mA, Max.
± 3% of Rdg. Normal Range
0.5% FS Normal Range
Din Connector (2 Poles + Ground)
Wiring Diagram
Dimensions
10K - 30K Ohms
Customer Supplied
Part Number Port
FTB-421G G 1/4 0.03 - 0.66 0.1 - 2.5 83200 22000 37 - 917 Hz Nylon 12
FTB-421 1/4” NPT 0.03 - 0.66 0.1 - 2.5 83200 22000 37 - 917 Hz Nylon 12
FTB-422G G 1/4 0.03 - 0.66 0.1 - 2.5 83200 22000 37 - 917 Hz Nylon 6
FTB-422 1/4” NPT 0.03 - 0.66 0.1 - 2.5 83200 22000 37 - 917 Hz Nylon 6
Flow Ranges Frequency Pulses
GPM LPM Per Gallons Per Liters Output
240328 rev B
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