Ниворегулатори и флусостати

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LIqUID FLoW SWITCHES
FUNCTION Liquid flow control for non aggressive liquid with small and medium quantity. The units cause a low pressure drop and present a high reliability. Alarm signal of flow shortage (safety switch).
TYpE FITTING g DB3-10MI DB3-15MI DB3-20MI DB3-25MI DB3-32MI DB3-40MI DB3-50MI
(*) Es end of scale
DB3...MI
ApplICATIONs Well-suited in: - heating and air conditioning systems; - refrigeration systems; - devices for oil monitoring; - lubrification circuits.
MAx. FlOw rATE rECOMMENDED l/min H2o 10 20 40 60 80 100 150 prEssUrE lOss (MAx FlOw rATE) bar 0.01 0.01 0.01 0.01 0.01 0.01 0.01 TOlErANCE ± % Es (*) 15 15 15 15 15 15 15
sETTING rANGE l/min H2o 4.0 - 5.5 5.5 - 7.0 7.5 - 10.0 14 - 18 22 - 30 37 - 50 67 - 93
3/8” 1/2” 3/4” 1” 1 1/4” 1 1/2” 2”
TECHNICAL FEATURES Contacts: Switch capacity: Working fluid temp: Max pressure: Differential: Hysteresis: Plug: Storage: Housing: Body: Paddle: Sealing: Protection: Size: Weight: DIMENSIoNS (mm) dust-tight microswitch with gold SPDT contacts 5 A, 250 Vac -20...+110 °C 25 bar see schedule min. 0,7 l/min connector female DIN 43650-A -20...+70 °C < 95% r.h. POM brass nickel plated stainless steel NBR IP65, class I see diagram see table
WIRINg DIAgRAM The microswitch contact “2” (common) and “1” (normally open) is already wired for use and provided with a 1,5 m cable. This contact opens when the value drops below the set switch-off value. The contact “3” (normally closed) can be used as a signal contact (fig.1). fig. 1
FUNCTIoNINg The stainless steel paddle moves because of flow that is stronger than spring return. The end arm part is mounted on a primary magnet. It actuates a secondary magnet that is external to flow and is mounted on the microswitch contact lever. NoTE After the cap nut has been removed the switch-off value can be changed slightly by adjustment of indicator between the minimum and the maximum. During installation take care to the correct flow direction. A straight zone of at least 5 x D must be provided upstram and downstream the location of installation.
g 3/8” 1/2” 3/4” 1”
F flow
DN 10 15 20 25 32 40 50
H (mm) 87 87 88 92 96 99 108
wEIGhT (g) 300 300 346 386 518 642 990
1 1/4” 1 1/2” 2”
29
LEvEL SWITCHES
funCTion Level control of normal liquids contained in tanks and barrels. Alarm signal of minimum or maximum level (safety switch). AppLiCATions Well-suited in tanks and barrels.
SQ
Type
DifferenTiAL mm
MAx. pressure bar 11
MAx. TeMperATure °C 85
ThreADeD BoDy 1”G ottone
fLoAT
SQ01
10/14
acrilico
TECHNICAL FEATURES Contacts: Switch capacity: Max liquid temperature: Max pressure: Level length: Working: Storage: Housing: protection: Size: Weight: dust-tight microswitch with SPDT contacts 15 (8) A, 24...250 Vac +85 °C see schedule 200 mm -40...+85 °C 10...90% r.h. (without condensing) -40...+85 °C < 95% r.h. Base in ABS, transparent PC cover IP65, class I 140 x 62 x 65 mm 960 g
wirinG DiAGrAM Connect to red and to white terminals (fig.1). The contact red-white opens when the liquid level raises the float. The contact red-blue closes at the same time and can be used as a signal or alarm contact.
fig. 1
NoTE The adjustment is fixed and not adaptable
DiMensions (mm)
39