NIVELCO NIVOCONT User manual

IECEx BKI 13.0001X ♦BKI16ATEX0005 ♦rkh5021a0600h_06 ♦1/2
Thank you for choosing a NIVELCO instrument.
We are sure that you will be satisfied throughout its use!
1. APPLICATION
The NIVOCONT vibrating rod level switches are suitable for low and high level indication of granules and powders with a
min. 0.05 kg/dm3density such as cement, lime, sand, grain, feed, sugar, etc. Dust Ex versions are available for using the
instrument in explosion-proof environment.
2. TECHNICAL DATA
2.1 GENERAL SPECIFICATION
VERSION STANDARD PIPE EXTENDED CABLE EXTENDED
Probe length 207 mm 0.3 … 3 m 1 … 20 m
Material of wetted parts 1.4571 Probe: 1.4571
Cable: PE coated
Housing material Aluminium: Powder paint coated (R-500 series)
Plastic: PBT fibre-glass reinforced, flame-retardant (R-600 series)
Process connection R_H; R_R.; R_K: 1½" BSP
R_N; R_L; R_C: 1½" NPT
Temperature ranges See table 2.2 and Temperature diagram
Max. pressure (absolute) 25 bar (2.5 MPa) 6 bar (0.6 MPa)
Minimum medium density (1) 0.05 kg/dm3 (max. granular size: 10 mm)
Not vibrating (covered) < 1.8 sec or 5 ±1.5 sec
Response time
(selectable) Vibrating (free) < 2 sec or 5 ±1.5 sec
Supply voltage (universal) normal type: 20…255 V AC/DC
Ex type: 20…250 V AC (50/60Hz) or 20…50V DC
Power consumption ≤2.5 VA / 2 W
Electrical connections
2 pcs. M20x1.5 cable glands with Ex ta IIIC protection type or
for normal types M20x1.5 plastic glands for cable Ø 6 to 12 mm,
2 pcs. plug-in type terminal blocks for 0.25 to 1.5 mm2wire cross section
internal thread for 2x ½” NPT cable protective pipe
Ingress protection Housing: IP67
Electrical protection Class I. (to be grounded!)
ATEX II 1/2D Ex ta/tb IIIC T90 °C…T170 °C Da/DbEx protection
mark IECEx Ex t IIIC T* Da/Db IP67 -30°C≤Tamb≤+60°C *(see table 2.2)
plastic housing 1.5 kg 1.5 kg (+ 1.4 kg/m) 1.5 kg (+ 0.6 kg/m)
Mass aluminium housing 1.88 kg 1.88 kg (+ 1.4 kg/m) 1.88 kg (+ 0.6 kg/m)
(1) Depend on friction and granular size of the medium
2.2 SPECIAL DATA
CABLE EXTENDED VERSION STANDARD AND PIPE EXTENDED VERSION
HIGH TEMP.
TEMPERATURE DATA R_K-5_ _-5Ex
R_C-5_ _-5Ex
RK_-5_ _-5Ex, RS_-5_ _-5Ex
with the exception of the cable extended version RH_-5_ _-5Ex,
RT_-5_ _-5Ex
Medium temperature
min.: -30°C ….max.: (3) +60°C +70°C +80°C
(2) +60°C +70°C +95°C +110°C +160°C
Ambient temperature range
min.: -30°C ….max.: (3) +60°C +50°C +60°C +60°C +50°C +60°C +50°C +35°C
Max. surface temperature of
process connection +85°C +85°C +95°C 85°C 85°C +95°C +95°C +135°C
Max. surface temperature +85°C +85°C +95°C 85°C 85°C +95°C +110°C +160°C
Temperature class T90°C T100°C T90°C T100°C T115°C T170°C
(2) Medium temperature for max.1 hour + 95 °C
(3) To operate the level switch with the maximum values of the related temperature data
the applied cable should permanently withstand up to +90 °C temperature.
RELAY SOLID STATE
OUTPUT DATA R_ _- 5_ _-1 R_ _- 5_ _- 5Ex R_ _- 5_ _-3
Output type SPDT (potential free) SPST (electronic)
Output rating 250 V AC, 8A, AC 1 50 V, 350 mA peak
Output protection — Overvoltage, overcurrent and overload
Voltage drop (switched on) — < 2.7 V @ 350 mA
Residual current (switched off) — < 10 μA
TEMPERATURE DIAGRAM
-30
-30 50 75
0
0
60
50
35
20
100 110 160 T
[°C]
A
M
T
[°C]
Figure 2.
Ambient temperature (TA) versus medium temperature (TM)
R_H
R_R
R_L
R_K
R_C
F = 500 N
M = 100 Nm
M = 100 Nm F = 45 kN
Figure 1.
Maximum allowed torque and force
2.3 ACCESSORIES
− User’s manual
− Warranty Card
− Declaration of Conformity
− 2 pcs. 3-pole terminal blocks
− 1 ½ " sealing, for BSP only
− 2 pcs. M20x1.5 cable glands
2.4 ORDER CODE NIVOCONT R - -
*
VERSION CODE CODE HOUSING CODE CODE SUPPLY / OUTPUT / Ex CODE
Standard K
PROCESS.
CONN. Standard Pipe Cable Alu cast 5
PROBE
LENGTH Standard Pipe Cable 20-255 V AC/DC / Relay 1
Standard polished S 1 ½ " BSP H R K Plastic 6 207 mm 02 — — 20-255 V AC/DC / Electronic 3
High temp. H (4) 1 ½ " NPT N L C 0.3 … 3 m — 03…30 — 20-250 V AC or 20-50 V DC / Relay / Ex 5
High temp. polished T (4)
1 … 20 m — — 01…20
(4) only for standard and pipe extended versions * The order code of an Ex version should end in „Ex”
Manufacturer:
1043 Budapest, Dugonics u. 11.
Telefon: [phone] Fax: [phone]
E-mail: [e-mail] www.nivelco.com
NIVELCO Process Control Co.
H-
(36-1)
NIVOCONT

IECEx BKI 13.0001X ♦BKI16ATEX0005 ♦rkh5021a0600h_06 ♦2/2
2.5 DIMENSIONS
STANDARD PIPE EXTENDED CABLE EXTENDED
Figure 3.
3. MOUNTING
Prior to installation, it is advised to check the switching function for proper adjustment on a
sample quantity of material (see: Adjustment). The unit may not work with mediums within
the specified density range but having very large size of granules or extremely little friction.
WARNING! Handle the device with great care, especially the sensing probe.
Any impact on the sensing probe may ruin its resonance system.
A protective shield should be installed (see Figure 6) if the probe is exposed to falling
material or excessive mechanical load.
Screw in the device by its hexagon neck. After screwing tight the process connection, the
housing can be rotated (max. 300°), to adjust the cable gland to the required position.
It might be necessary to install the device at an offset level position relative to the switching
level actually required taking into account caving or arching of the material in the silo
(see Figure 4).
High level indication Low level indication
Figure 4.
With powder level detection device should be
installed at an inclination exceeding the angle o
f
repose (or, in case of high level detection
vertically), to prevent powder deposition on vibrating
rod that might substantially reduce the self-cleaning
effect. Also avoid mounting the rod in a recess (see
Figure 5)
Figure 5.
L30x30x3
Figure 6.
In case of tanks that are likely to be exposed to intense vibrations, necessary provisions
shall be made for damping the vibrations acting on the device (e.g. vibration damping
inserts made of rubber have to be applied).
4. INSTALLATION, PUTTING INTO OPERATION
Remove the top cover of the housing to access the connection terminals and adjusting
switches. In case of Dust Ex instruments the housing cover can be only opened after the
removal of the socket cap screw fixed safety locking bolt.
Do not remove the wire form terminal pin 1 (Figure 7) because it is an internal connection.
For grounding the unit use the PE (Protective Earth) grounding screw.
After proper installation and the electrical connection, established the device is ready for
operation. The switched-on state is indicated by the lighting of the LED.
The DENSITY (switch A) switch is to be set in accordance with the density of the material:
• LOW position, recommended for loose and light materials with density below
0.1 kg/dm3represents small energy and amplitude of vibration as well as great
sensitivity of detection.
• HIGH position, recommended for (thick and heavy) materials with density over
0.1 kg/dm3represents vibration with great energy and amplitude and small
sensitivity of detection
The instrument may not switch correctly in mediums with density less than 0.05 kg/dm3or
with very small internal friction.
To obtain FAIL SAFE alarm (switch C), use the de-energised or open state of the output as
an alarm, thus a power breakdown will also be considered as alarm (see Table below).
The delay (switch B) is to be selected to comply with requirements of the process control
technology the units is used for.
Note: The instrument may be damaged via switches by electrostatic discharge (ESD),
thus the precautions commonly used to avoid ESD is to be applied.
5. WIRING
NO CNC
PE
NL1
PE
NL1
123 45 6
250VAC
8A/AC1
A
B CStatus LE
D
L1
N
PLC
PE
IN
COM
+24V
NL1
123 456
50V
350mA
2,7k
Overload LED
A B CStatus LED
Figure 7.
Wiring of relay output version
Figure 8.
Wiring of optocoupled sink input to solid state ouput
version supplied from a AC line
IN
GND
Devi ce to be
controlled
+5 V
L1
N
PE
NL1
123 45 6
50V
350mA
2 7k
Overload LED
A B C
Status LED
24 V AC
50 Hz
5 W
L1
N
PE
NL1
123 45 6
50V
350mA
2,7k
Overload LED
A B C
Status LED
Figure 9.
Wiring of a logical voltage input to a solid state
output version supplied from a AC line
Figure 10.
Wiring of a load to a solid state output version
supplied from a AC line
5.1 OPERATION DIAGRAM
POWER PROBE FAIL-SAFE
MODE LED RELAY
SOLID STATE
OUTPUT
LOW GREEN
54
6
ENERGISED
5
62,7 k
4
ON
NOT
VIBRATING
(COVERED)
HIGH RED
54
6
DE-ENERGISED
5
62,7 k
4
OFF
LOW RED
54
6
DE-ENERGISED
5
62,7 k
4
OFF
ON
VIBRATING
(FREE)
HIGH GREEN
54
6
ENERGISED
5
62,7 k
4
ON
FAILS
LOW
or
HIGH
NOT LIT
54
6
DE-ENERGISED
5
62,7 k
4
OFF
5.2 SPECIAL CONDITIONS FOR SAFE USE
The enclosure shall be not opened while it is energized!
The IECEx certified apparatus may be used only in explosive dust atmospheres where the
temperature class of the selected type of the apparatus does not exceed two-third parts of
the minimum ignition temperature of the dust/air mixture.
The IECEx certified equipment must be assembled with cable glands certified according to
protection Ex t IIIC IP67, size M20x1.5
In hazardous atmosphere environment the unit can be only powered on after properly
closing the housing cover and fixing the screws of the safety locking bolt.
6. MAINTENANCE AND REPAIR
The NIVOCONT R-500/R-600 series devices do not require maintenance on a regular
basis. In some instances, however, the vibrating section may need a cleaning from
deposited material. This must be carried out gently, without harming the vibrating
section of the vibrating rod.
Repairs during or after the warranty period are effected at the Manufacturers. The
equipment sent back for repairs should be cleaned or neutralised (desinfected) by the User.
7. STORAGE
Ambient temperature: -35 ... +60°C
Relative humidity: max. 98 %
8. WARRANTY
NIVELCO provides warranty of 3 (three) years in compliance with details described in the
Warranty Card.
rkh5021a0600h_06
April 2016
NIVELCO reserves the right to change technical data without notice.