NIVELCO NIVOSWITCH R-400 Series User manual

Thank you for choosing a NIVELCO instrument
We are sure that you will be satisfied with it throughout its use!
1. APPLICATION
The NIVOSWITCH vibrating forks are for detection of level and flow of liquids. Using them as high or low fail
safe switch overfilling of tanks and dry run of pumps can be prevented.
2. TECHNICAL DATA
MODEL R-400 R-500
Wetted parts St.st. 1.4571 (X 6 CrNiMoTi 17122) or ECTFE (Halar) coated st.st.
Process connection According to the order code
Housing material Aluminium: Powder paint coated Plastic: PBT fibre-glass reinforced,
flame-retardant (DuPont)
Medium -40 °C to +130 °C PP flange: -20 °C to +90 °C
ECTFE coated st.st. flange: -40 °C to +120 °C, for Derating see diagrams
Temperature ranges
Ambient -30 °C to +70 °C
Maximum pressure 40 bar (with PP flange 6 bar) See 2.4 Derating Diagrams
Probe length 69 to 3000 mm
Minimum medium density ≥0.7 kg/dm3
Maximum medium viscosity ≤10000 mm2/s (cSt)
Getting immersed ≤0.5 sec
Response time Getting free ≤1 sec See 2.4 Response Time Diagram
Operation mode indicator Bi-colour LED
Operation mode selection Switch for selection of HIGH or LOW fail safe mode
Output 1 or 2 SPDT relays
Relay 1: 250 V AC, 8 A, AC 1 Relay 2: 250 V AC, 6A, AC 1
Electric connections M 20 x 1.5 cable gland; ∅6 to 12 mm cables
(0.75 to 2.5 mm2wire cross section)
Supply voltage 20 ... 255 V AC and 20 ... 60 V DC
Consumption AC: 1.2 … 17 VA ; DC: < 3 W
Electrical protection Class I.
Ingress protection IP 67 (NEMA 6)
Weight 1.3 kg + 1.2 kg/m 0.95 kg + 1.2 kg/m
WARNING! Temperature difference between inner and outer surface of the ECTFE coated flanges must not exceed 60 ° C. If necessary,
insulate outer surface of the flange.
Vibrating fork level switches
Series: R-400 / R-500
USER’S MANUAL
2.1 ACCESSORIES
−User’s manual – Sealing 2 mm thick made of KLINGER OILIT (for 1” BSP process connection only)
−Warranty Card – Plug-in type, 3-pole terminal block (2 pcs for standard and 3 pcs for models with 2 relay)
−Declaration of conformity –Cable gland M 20 x 1.5 (2 pcs)
2.2 ORDER CODE
NIVOSWITCH R – –
FORK CODE CONNECTIONS CODE HOUSING CODE LENGTH CODE OUTPUT CODE
ECTFE coated D1” BSP thread MAlu. cast 4Short (69 mm) 00 1 Relay 0
Standard F1” NPT thread PPlastic 5Standard (125 mm) 01 2 Relay A
DIN DN50PN40 st.st flange G0.2 to 3 m 02…30
2” ANSI st.st. flange B
50A JIS st.st flange K
DIN DN50 PN16 PP flange F
2” ANSI PP flange A
50A JIS PP flange J
2.3 DIMENSIONS 2.4 Derating DIAGRAMS 2.5 RESPONSE TIME - MEDIUM VISCOSITY
Short model
2xM20x1.5
2 x NPT1/2"
1" BSP
1" NPT
89
S=41
69111
Standard model
89
2xM20x1.5
2 x NPT1/2"
1" BSP
1" NPT S=41
111
125
28
Pipe extended model
89
2xM20x1.5
2x NPT1/2"
1" BSP
1" NPT 28 S=41
111
0.2 ... 3 m
for all models (except PP flanged)
for models with Polypropylene flange
0
5
10
15
20
25
30
35
02000 4000 6000 8000 10000
fullyimmersed
halfimmersed
onlytheflatpartofthetinesimmersed
Kinematic viscosit
y
[cSt]
Response time
t [sec]
The test was performed using
silicone oils with different viscosity
ν
Response time (when getting free) versus medium viscosity

3. INSTALLATION
Prevent the unit from being damaged!
For positioning the fork-tines, use the marking on the hexagonal neck.
MARK
−Use a TEFLON (PTFE) tape to aid the
positioning of the fork-tine.
−If the fork-tine position is irrelevant, use
the sealing ring provided
Do not use housing, to screw the unit into the process connection.
Do it by means of the sw = 41 mm hexagonal neck.
After screwing tight the device, the housing can be rotated by hand (max. 300°),
to adjust the cable outlets to the required position.
In applications to liquids with
−low viscosity (without risk of material
remaining on the fork-tines) any of the
mounting shown beside is possible,
−high viscosity (due to risk of material
remaining on the fork-tines) only vertical
(top) mounting can be suggested.
In applications with side mounting vertical
positioning of the tines is recommended.
Mounting threaded versions Installation Options
Critical distances (xmin= 5 mm) Mounting in pipe fork-tines must be parallel to
the direction of flow
SWITCHING POINT, SWITCH DIFFERENTIAL
(Values are for water at 25 °C)
Switching point as well as the switch differential slightly depends on liquid density
and mounting position.
4. ELECTRICAL CONNECTIONS
Use 6 ... 12 mm outer diameter cables, and tighten cable glands as well as
housing cover after installation, to ensure an IP 67 sealing.
Use outside or inside grounding screw terminal for grounding the unit. Common
cables must not be used for AC and DC voltage, as well as for low and mains
voltage.
7
L1N
123
FAIL
U
AC
DC
HIGH
LOW
SAFE
456
GREEN
RED
LOW
SAFEFAIL
250VAC
6A/AC1
HIGH
89
250VAC
8A/AC1
Grounding
Mains
Status LED
Output
Fail safe
mode
1/2” NPT
M20 x 1,5 M20 x 1,5
1/2” NPT
5. ADJUSTMENT
Operation mode
Power
supply Fork Switch pos. Fail
safe
Status
LED
Output
HIGH RED
45 6 78 9
De-
energised
Immersed LOW GREEN
45 6 78 9
Energised
HIGH GREEN
45 6 78 9
Energised
Yes
Free LOW RED
45 6 78 9
De-
energised
No
Free
or
immersed
HIGH
or
LOW
NOT
LIT
45 6 78 9
De-
energised
6. MAINTENANCE
The NIVOSWITCH does not require maintenance on a regular basis. In some
instances, however, the vibrating section may need to be cleaned from the
deposited material. This must be carried out carefully.
7. STORAGE CONDITIONS
Ambient temperature: -25 to +60 °C
Relative humidity: max. 98%
8. WARRANTY
All NIVELCO products are warranted to be free from defects according to the
Warranty Sheet, within two (2) years from the date of purchase.
rfm4000a0600h_03
May, 2004
Nivelco reserves the right to change technical specifications without notice.