SF_Flow_switch_Riels0 pages
SF
FLOW SWITCH
FOR LIQUID
FLOW CONTROLS
Liquid Flow Switches
Function
Flow control of aggressive media, water and normal media (depending
on model).
Alarm signal of flow shortage (safety switch).
Available in brass, suitable for normal media, and in stainless steel
AISI316L, suitable for sea water and aggressive media.
Applications
Well-suited in pipes of general industrial plants:
- heating and air conditioning systems;
- refrigeration systems;
- sprinkler or anti-fire systems;
Tutti i dati ed i contenuti di questa scheda sono di proprietà esclusiva di Riels Instruments
- heat pumps;
- devices for oil monitoring;
SF3E...6E
SF1
SF2
- lubrification circuits.
Pipe
Ø
SF1K/RL
SF1E/RL*
SF1RE/RL
SF2E/RL**
SF2RE/RL
SF3E/RL
SF4E/RL
SF6E/RL
Accessories
Max pressure
Bar
Normal media
(body in brass)
1…8“
1…8“
1…8“
1…8“
1…8“
1/2“
3/4“
1“
Type
11
11
11
30
30
11
11
11
•
•
•
NPT 1” NPT connector ttt
Aggressive media
(body in stainless steel AISI 316L)
•
•
•
•
•
•
DBZ-09 - Stainless steel Aisi 316L paddles for liquid flow switch
* models with TÜV approvaltttt
Protection
Flow rate
IP65
IP65
IP65
IP65
IP65
IP65
IP65
IP65
•
•
Technical features
Contacts:
Switch capacity:
Working:
Max temperature
Max pressure:
Fitting:
Body:
Paddles:
Housing:
Storage:
Protection:
Size:
Weight:
Body with pipe
fitting "T"
1
1
2
1
2
3
3
3
** models with TÜV approval
Wiring diagram
dust-tight microswitch with switching contacts (n.c./n.o.)
15 (8) A, 24...250 Vac
-40...+85 ºC t
10...90% r.h. (without condensing)
-40...+120 ºC
11 bar (SF2: 30 bar)
see flow rate schedule
see schedule above
stainless stee INOX AISI 316L
Base in ABS, transparent PC cover
-40...+85 °C t
< 95% r.h.
IP65, class I
140 x 62 x 65 mm
950 g
Diagram during flow presence.
Installation
The flowswitch can installed in every position far from elbows or throttlings, with arrow on
flow direction. If pipe is vertical, recalibrate range to balance paddle weight. If the device is
downwards mounted take care to slags, and apply it in a straight pipe far from filters, valves,
etc with length at least 5 times the diameter of pipe upstream and downstream the unit.
Riels Instruments Srl
+39 049 8961771
Connect to red and to white contacts of the microswitch (fig. 1). The contact red-white opens when
the flow drops below the set level. When the flow is
missing the contact red-blue closes and can be used
as a signal or alarm contact.
+39 049 717368 www.riels.it info@riels.it
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