Nivetec NIVOCONT User manual

NIVOCONT
VIBRATING ROD LEVEL SWITCHES
USER’S MANUAL
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APPROVALS:
BKI ATEX, Certificate No.: BKI16ATEX0005
BKI IECEx, Certificate No.: IECEx BKI 13.0001x issue No.: 0

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CONTENTS
1. INTRODUCTION................................................................................................................................................................................................... 5
2. ORDER CODES.................................................................................................................................................................................................... 5
2.1 Accessories............................................................................................................................................................................................................................... 5
3. TECHNICAL DATA............................................................................................................................................................................................... 6
3.1 General specification................................................................................................................................................................................................................. 6
3.2 Dimensions................................................................................................................................................................................................................................ 7
3.3 Additional data for explosion-proof devices .............................................................................................................................................................................. 8
3.3.1 ATEX Approval, No. BKI16ATEX0005.............................................................................................................................................................................. 8
3.3.2 IECEx Approval No. IECEX BKI 13.0001 X ...................................................................................................................................................................... 9
3.4 Special conditions for safe use ................................................................................................................................................................................................. 9
4. MOUNTING......................................................................................................................................................................................................... 10
5. INSTALLATION, PUTTING INTO OPERATION................................................................................................................................................ 11
6. WIRING............................................................................................................................................................................................................... 12
6.1 Operation diagram................................................................................................................................................................................................................... 13
7. MOUNTING OF CUSTOM EXTENDED TYPE ................................................................................................................................................... 14
8. MAINTENANCE AND REPAIR .......................................................................................................................................................................... 14
9. STORAGE CONDITIONS................................................................................................................................................................................... 14

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Thank you for choosing a NIVELCO instrument.
We are sure that you will be satisfied throughout its use.
1. INTRODUCTION
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. ORDER CODES
NIVOCONT R - - *
VERSION CODE HOUSING CODE SUPPLY / OUTPUT / Ex CODE
Standard K
A
lu cas
t
5 20-255 V
A
C/DC / Relay 1
Standard polished S Plastic 6 20-255 V AC/DC / Electronic 3
High temp. H(4) 20-250 V AC vagy 20-50V DC / Relay / E
x
5
High temp. polished T(4)
PROCESS.
CONN.
CODE PROBE
LENGTH
CODE
EXTENSION EXTENSION
Standard Pipe Cable Custom Standard Pipe Cable Custom
1 ½ " BSP H R K E 207 mm 02 — —
1 ½ " NPT N L C F 0,3 … 3 m — 03…30 —
1 … 20 m — — 01…20
0,2…2m 02
(4) only for standard and pipe extended versions
* The order code of an Ex version should end in „Ex”
2.1 Accessories
 User’s manual
 Warranty Card
 Declaration of Conformity
 2 pcs. 3-pole terminal blocks
 1 ½ " sealing, for BSP only

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3. TECHNICAL DATA
3.1 General specification
VERSION STANDARD PIPE EXTENDED CABLE EXTENDED CUSTOM EXTENDED
Probe length 207 mm [8.15 in] 0,3 – 3 m [0.98 – 9.84 ft] 1 – 20 m [3.28 – 65.62 ft] 0,2 – 2m [0.66 – 6.56 ft]
Material of wetted parts 1.4571 rezgőrész: 1.4571 PE bevonatú kötél 1.4571
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, RE: 1½" BSP;
RN, RL, RC, RF: 1½" NPT
Temperature ranges See Figure 2.
Max. pressure (absolute) 25 bar (2,5 MPa) [362.6 psi] 6 bar (0,6 MPa) [87 psi] See section 6!
Minimum medium density (1) 0.05 kg/dm3 [3.12 lb/ft3] (max. granular size: 10 mm [0.39 in])
Response time
(selectable)
Not vibrating
(covered) < 1.8 sec or 51.5 sec
Vibrating (free) < 2 sec or 5 1.5 sec
Supply voltage (universal) normal type: 20 – 255 V AC/DC
Power consumption 2.5 VA / 2 W
Electrical connections 2 pcs. plastic glands for cable Ø 6 – 12 mm [Ø 0.24 in – Ø 0.47 in],
2 pcs. plug-in type terminal blocks for max 1.5 mm2[15 AWG] wire cross section internal thread for 2x ½” NPT cable protective pipe
Ingress protection Housing: IP67 See section 6!
Electrical protection Class I. (to be grounded!)
Mass plastic housing 1,5 kg 1,5 kg (+1,4 kg/m) 1,5 kg (+0,6 kg/m) 1,5 kg
aluminium housing 1,88 kg 1,88 kg (+1,4 kg/m) 1,88 kg (+0,6 kg/m) 1,88 kg
(1) Depend on friction and granular size of the medium
OUTPUT DATA RELAY SOLID STATE
Output type SPDT (potential free) SPST (electronic)
Output rating 250 V AC, 8 A, AC 1 50 V, 350 mA
Output protection – Overvoltage, overcurrent and overload
Voltage drop (switched on) – < 2.7 V @ 350 mA
Residual current (switched off) – <10 A

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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
F = 500 N
M = 100 Nm
R_R
R_L
M = 100 Nm
R_K
R_C
F = 45 kN
3.2 Dimensions
STANDARD PIPE EXTENDED CABLE EXTENDED CUSTOM EXTENDED
Figure 3.

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3.3 Additional data for explosion-proof devices
3.3.1 ATEX Approval, No. BKI16ATEX0005
TYPE RK-5-5EX,RH-5-5EX,RS-5-5EX,RT-5-5EX
Ex marking II1/2 D Ex ta/tb IIIC T90 °C…T170 °C Da/Db
Supply voltage (universal) 20 – 250 V AC (50 / 60 Hz) or 20 – 50 V DC
Electrical connections 2 pcs. M20x1.5 cable glands with Ex ta IIIC protection type,
2 pcs. plug-in type terminal blocks for max. 1.5 mm2wire cross section
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.
TEMPERATURE DATA
CABLE EXTENDED VERSION STANDARD AND PIPE EXTENDED VERSION
RK-5-5Ex
RC-5-5Ex
RK-5-5Ex, RS-5-5Ex
with the exception of the cable extended version
HIGH TEMPERATURE
RH-5-5Ex, RT-5-5E
x
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) +50 °C +60 °C +50 °C +60 °C +50 °C +35 °C
Max. surface temperature of process connection
+85 °C +95 °C 85 °C
+95 °C +135 °C
Max. surface temperature +95 °C +110 °C +160 °C
Temperature class T90 °C T100 °C T90 °C T100 °C T115 °C T170 °C

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3.3.2 IECEx Approval No. IECEX BKI 13.0001 X
TYPE RK-5-5EX,RH-5-5EX,RS-5-5EX,RT-5-5EX
Ex MARKING Ex t IIIC T* Da/Db IP67 *(see Temperature data table)
Supply voltage (universal) 20 – 250 V AC (50 / 60 Hz) or 20 – 50V DC
Electrical connections 2 pcs. M20x1.5 cable glands with Ex ta IIIC protection type,
2 pcs. plug-in type terminal blocks for max. 1.5 mm2wire cross section
(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.
3.4 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.
TEMPERATURE DATA
CABLE EXTENDED VERSION STANDARD AND PIPE EXTENDED VERSION
RK-5-5Ex
RC-5-5Ex
RK-5-5Ex, RS-5-5Ex
with the exception of the cable extended version
HIGH TEMPERATURE
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) +50 °C +60 °C +50 °C +60 °C +50 °C +35 °C
Max. surface temperature of process connection
+85 °C +95 °C 85 °C
+95 °C +135 °C
Max. surface temperature +95 °C +110 °C +160 °C
Temperature class T90 °C T100 °C T90 °C T100 °C T115 °C T170 °C

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4. MOUNTING
Prior to installation, it is advised to check the switching function for proper adjustment on a sample quantity of material (see: Installation).
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 of 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).
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).
L30x30x3

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Figure 5. Figure 6.
5. 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 6.1 Operation
diagram Table). The delay (switch B) is to be selected to comply with requirements of the process control technology the units are used for.
ATTENTION! The instrument may be damaged via switches by electrostatic discharge (ESD), thus the precautions commonly used to avoid ESD is to be applied.

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6. WIRING
NO CNC
PE
NL1
PE
NL1
123 456
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 optoco
u
pled sink input to solid state ouput version supplied from a AC line
IN
GND
Device to be
controlled
+5 V
L1
N
PE
NL1
123 456
50V
350mA
2,7k
Overload LED
A B C
Status LED
24 V AC
50 Hz
5 W
L1
N
PE
NL1
123 456
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

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6.1 Operation diagram
POWER PROBE FAIL-SAFE MODE LED RELAY SOLID STATE OUTPUT
ON
NOT VIBRATING
(COVERED)
LOW GREEN
54
6
ENERGISED
5
62,7 k
4
ON
HIGH RED
54
6
DE-ENERGISED
5
62,7 k
4
OFF
VIBRATING
(FREE)
LOW RED
54
6
DE-ENERGISED
5
62,7 k
4
OFF
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

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7. MOUNTING OF CUSTOM EXTENDED TYPE
!
Attention! The device must not be installed with the temporary (plastic) extension pipe!
 Remove the temporary (plastic) extension pipe.
 Cut a 1" inch stainless steel (1.4571) extension pipe to the desired length. (Not part of the package.)
 Cut 20 mm long 1″BSP thread at both ends of the pipe.
 Connect the wires of the lower and upper half correctly by colour using the supplied cable set. The wires must be led through the pipe.
 Use the grounding screw terminal (see Figure11.) for grounding the extension pipe. Important! Life protection ground, 25 A class ground connection must be guaranteed to suit
Class I. electrical protection.
 Lubricate the extension pipe threads smoothly and seamlessly with sealing-fixing adhesive. For this use LOCTITE 620 retaining compound or a corresponding adhesive. (Not part
of the package.)
 Screw the threaded connections between the lower and upper units all the way up to their limits.
!
Only the correct mounting, ensures the desired IP67 protection, 6 bar (0.6 MPa)
maximum tank pressure and Class I. electrical protection. The user has to
ensure these under their own authority!
The manufacturer declines liability for any damages or any issue due to non-
conformity related to the above described installations performed by the
customer.

Grounding screw
(1"BSP)
Figure 11.
8. MAINTENANCE AND REPAIR
The 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.
9. STORAGE CONDITIONS
Ambient temperature: -35 °C … +60 °C
Relative humidity: max. 98%

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rkh5021a0600h_08
August 2018