NIVELCO R-400 User Manual

Thank you for choosing a NIVELCO instrument!
1. APPLICATION
NIVOSWITCH vibrating fork level switches are suitable for level detection of liquids. Mounted on pipes or tanks it
controls filling/emptying, also can generate fail-safe alarms providing overfill- or dry run protection. The operating
principle involves an electronic circuit that induces vibration in the fork probe. When the medium reaches and
covers the fork, the vibration changes or stops. The fork will start vibrating freely again when the medium drops to
a level where it no longer touches the prongs. The electronics senses the change in the vibration and sends out
an output signal after a preset delay. The plastic-coated version is recommended for aggressive mediums, the
highly polished version is recommended for abrasive mediums. The flameproof version allows using the device
in Ex rated environments.
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
Medium viscosity
Getting immersed
Response
time
Getting free
Operating mode indicator
Operating mode selection
Output
Electrical connection
Power supply
Power consumption
Electrical protection
lngress protection
Weight
* The temperature difference between inner and outer surface of the ECTFE or PFA-coated flanges must not exceed +60 °C (+140 °F).
If necessary, insulate outer surface of the flange.
2.3 PRESSURE – TEMPERATURE DIAGRAMS
p [ bar ]
40
25
0
-40
0
Medium pressure (p
2.4 RESPONSE TIME – MEDIUM VISCOSITY DIAGRAM
Response time
[S]
35
30
25
20
15
10
5
0
0 2000
RM–4–Ex,
RN–4–Ex
1.4571 (316Ti)
As per order code
Powder-coated aluminum
See: chapter 2.5.4
Up to 40 bar (4 MPa, 580 psi)
(see: 2.3 diagram)
69...3000 mm (2.7"...10 feet), as per order code
≥0.7 kg/dm
≤10000 mm /s (cSt) (see diagram)
2
≤0.5 sec
≤1 sec (see: diagram 2.4)
Two-tone LED
Switch for selecting HIGH or LOW fail-safe mode
1 or 2 SPDT relays
Relay 1: 250 V AC, 8 A, AC1 / Relay 2: 250 V AC, 6 A, AC1
See: chapter 2.5.
Terminal blocks for max. 1.5 mm² (AWG16) wire cross section
See: chapter 2.5.
2.1 kg + 1,2 kg/m 1.3 kg + 1.2 kg/m
(~4.62 lb + 1 lb/ft) (~2.85 lb + 1 lb/ft)
50 100 130 T [°C]
M
) – Medium temperature (T )
T M
vertical position
horizontal position
4000 6000 8000
viscosity [cSt]
RD–4–,
RF–4–, R–5
RJ–4–
1.4571(316Ti) / ECTFE / PFA-coating
Plastic, PBT, fiber-
glass-reinforced
–40...+130 °C (–40...+266 °F);
PP flange: –20...+90 °C (–4...+194 °F);
*PFA-coated 1.4571 flange:
–40...+120 °C (–40...248 °F)
(see: diagram 2.3)
–40...+70 °C –30...+70 °C
(–40...+158 °F) (–22...+158 °F)
Up to 40 bar (4 MPa, 580 psi) (with PP flange
6 bar [0.6 MPa, 87 psi]) (see: diagram 2.3)
(>0.7 S.G.)
3
2× M20x1.5 cable glands for Ø6...12 mm
(Ø0.25"...0.5") cable; 2× internally threaded
½" NPT connection for protective pipes.
20...255 V AC, 20...60 V DC
<3 W
Class I
IP67
0.95 kg + 1.2 kg/m
(~2 lb + 1 lb/ft)
-20
Medium pressure (p
10000
NIVOSWITCH
R–400, R–500
VIBRATING FORK LEVEL SWITCHES
USER'S MANUAL
Manufacturer:
Process Control Co.
H-1043 Budapest, Dugonics u. 11.
Tel.: +36 1 889-0100
E-mail: sales@nivelco.com
2.2 ACCESSORIES
– User's manual
– Warranty Card
– EU-Declaration of Conformity
– 2× M20x1.5 plastic cable gland
(only for non-explosion-proof models)
– 1× 2 mm thick KLINGER OILIT sealing
(only for BSP-threaded process connection)
– 2× plug-in type, 3-pole terminal block
(3× for models with 2 relays)
p [bar]
T
6
5
1
0
0 50
) – Medium temperature (T
T
PDF

Fax: 889-0200

www.nivelco.com

90 T [°C]
M
) PP flange version
M
rfm400en21h08 ♦ page 1