NIVELCO NIVOSWITCH R-2 Series User Manual

Thank you for choosing a NIVELCO instrument!
1. APPLICATION
NIVOSWITCH RF–2–, RF–3– vibrating forks are designed for detection of level of powders
and granules. When they are used as high or low fail safe switches overfilling and emptying of silos and other
containers can be prevented. The RF fork series (base model, insertion length = 125 mm [4.9"]) with cast forks
are recommended for small granules, while the RR fork series (base model, insertion length = 137 mm [5.4"])
with welded forks are recommended for larger granules. Dust-Ex versions of the R–300 forks with aluminum
housing are also available.
2. TECHNICAL DATA
2.1 GENERAL DATA
Type
Material of wetted parts
Process connection
Housing material
Medium
Temperature
ranges
Ambient
Medium pressure
Insertion length
Medium density
Getting immersed
Response
time
Getting free
Operating mode indicator
Operating mode selection
Density adjustment
Output
(1)
Electrical connection (1)
Power supply (1)
Power consumption
Electrical protection
lngress protection
Weight
(1) For Ex type, see chapter 2.2 Explosion protection, Ex markings, Ex limit data.
2.2 E , E
XPLOSION PROTECTION X MARKINGS
2.2.1 ATEX certificate, No. BKI16ATEX0011/1
Ex marking
Power supply (universal)
Electrical connection
Medium
Temperature ranges
Ambient
Output
Reference document number
2.3 A
CCESSORIES
 User's manual
 Warranty Card
 EU-Declaration of Conformity
2.4 R –
ESPONSE TIME MEDIUM VISCOSITY DIAGRAM
rfm301en21h09  1/3
R–3–
1.4571 stainless steel
As per order code
Powder-coated aluminum
–40...+130 °C (–40...+266 °F); PP flange: –20...+90 °C (–4...+194 °F)
–40...+70 °C (–40...+158 °F)
Up to 40 bar (4 MPa, 580 psi) see: 2.5 diagram
125...3000 mm (5"...10 feet), as per order code
 0.01 kg/d m
 0.5 sec
 1 sec at high-density setting ( 0.5 kg/dm
 3 sec at low-density setting (< 0.5 kg/dm
Two-tone LED
Switch for selecting HIGH or LOW fail-safe mode
Switch for selecting HIGH or LOW Density
1 or 2 SPDT relays
Relay 1: 250 V AC, 8 A, AC1 / Relay 2: 250 V AC, 6 A, AC1
2× M20x1.5 cable glands for Ø6...12 mm (Ø0.25"...0.5") cable;
2× internally threaded ½" NPT connection for protective pipes.
Terminal blocks for max. 1.5 mm² (AWG16) wire cross section
20...255 V AC/DC
DC: < 3 W
Class I
IP67
1.3 kg + 1.2 kg/m (~2.86 lb + 1 lb/ft)
, E
X LIMIT DATA
– 2× M20x1.5 plastic cable gland
– 1× 2 mm (0.08") thick KLINGER OILIT seal (only for 1" BSP-threaded process connection)
– 2× plug-in type, 3-pole terminal block (3× for models with 2 relays)
R–2–
Plastic, PBT, fiberglass-reinforced
(>0.7 S.G.)
3
)
3
)
3
0.95 kg + 1.2 kg/m (~2 lb + 1 lb/ft)
R–3–B Ex
II 1/2 D Ex ta/tb IIIC T140 °C Da/Db
20...250 V AC (50/60Hz) or 20...50V DC
2× M20x1.5 Ex ta IIIC cable glands for Ø7...12 mm (Ø0.28"...0.5") cable;
2× terminal blocks for max. 1.5 mm² (AWG16) wire cross section
2× internally threaded ½" NPT connection for protective pipes
–40...+130 °C (–40...+266 °F)
–40...+70 °C (–40...+158 °F)
1× SPDT relay 250 V AC, 8 A, AC1
rfm3010m060bh_09
2.5 P –
RESSURE TEMPERATURE DIAGRAMS
Medium pressure (pT) – Medium temperature (TM)
Medium pressure (pT) – Medium temperature (TM) PP flange version