UWT Vibranivo VN 4000 Series User manual

Level limit switch
Series VN 4000
Technical Information / Instruction manual
page G
Table of contents
Page
Safety notes / Technical support G2
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Introduction G3
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Technical data G4
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Approvals G6
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Options G7
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Mounting G8
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Electrical installation G11
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Signal output G14
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Sensitivity / Maintenance G15
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Notes for use in Hazardous Locations G16
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Subject to technical change. We assume no liability for typing errors.
All dimensions in mm (inch). Different variations than specied are possible.
Please contact our technical consultants.
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Level limit switch
Series VN 4000
Technical Information / Instruction manual
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Safety notes / Technical support
Notes
• Installation, maintenance and commissioning may be accomplished only by qualied technical personnel.
• The product must be used only in the manner outlined in this instruction manual.
Special attention must be paid to warnings and notes as follows:
WARNING
Relates to a caution symbol on the product: A failure to observe the necessary
precautions can result in death, serious injury and/or considerable material damage.
WARNING
Relates to a caution symbol on the product: Risk of electric shock
WARNING
A failure to observe the necessary precautions can result in death, serious injury
and/or considerable material damage.
This symbol is used, when there is no corresponding caution symbol on the product.
CAUTION A failure to observe the necessary precautions can result in considerable material
damage.
Safety symbols
In manual and on
product
Description
CAUTION: refer to accompanying documents (manual) for details.
Earth (ground) Terminal
Protective Conductor Terminal
Technical support
Please contact your local supplier (for address see www.uwt.de). Otherwise you can contact:
UWT GmbH Tel.: [phone]
Westendstr. 5 Fax: [phone]
D-87488 Betzigau [email protected]
www.uwt.de
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Level limit switch
Series VN 4000
Technical Information / Instruction manual
page G
Introduction
Applications
The device is used for level monitoring in all types of
containers and silos.
It can be used with all powdery and granulated bulk materials
with a densitiy greater than 30 g/l (1.9lb/ft3) that do not show a
strong tendency to form crusts or deposits.
The units can be delivered with Ex-approvals for use in Dust
Hazardous Areas.
A selection of elds of application:
 • Buildingmaterialsindustry
lime, moulding sand, etc.
 • Foodindustry
milk powder, our, salt, etc.
 • Plasticsindustry
plastics granules etc.
 • Timberindustry
 • Chemicalindustry
 • Mechanicalengineering
The VIBRANIVO oscillating probe is normally screwed into
the lateral container wall so that it is level with the lling
height to be registered and monitored.
The device can also be mounted from the top of the
container. In this case an extension piece is used to mount
the probe level with the height to be registered.
The length of the probe can be up to 4m (157”) with an
extension tube (VN 4030) .
The use of a sliding sleeve is recommended so that the
switch point can be changed continuously during operation
of the device.
Function
The piezo-electrically stimulated oscillating fork vibrates
at its mechanical resonance frequency. If the probe is
covered by the bulk material, the damping thus generated
is registered electronically and a corresponding signal
output is actuated.
The oscillation of the fork ensures a certain self-cleaning
effect..
optional
sliding
sleeve
application in
down pipe
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VN 4000 a gi161213 3
VN 4030
VN 4020
VN 4030
VN 4020
VN 4020
VN 4030
VN 4020
VN 4030

Level limit switch
Series VN 4000
Technical Information / Instruction manual
page G
Technical data
Thread Flange Temperature
extended shaft (pos. 3.2)
Triclamp
Thread Flange Temperature
extended shaft (pos. 3.2)
Triclamp
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VN 4020
VN 4030

Level limit switch
Series VN 4000
Technical Information / Instruction manual
page G
Technical data
Electrical data
Connectionterminals 0.14 - 2.5mm2 (AWG 26-14)
Cableentry M20 x 1.5 screwed cable gland
NPT 1/2“ conduit connection
NPT 3/4” conduit connection
Signaldelay Sensor free -> covered ca. 1 sec
Sensor covered -> free ca. 1..2 sec
Safety operation
(FSL,FSH)
Switchable for minimum or maximum safety
Vibration frequency ca. 200 Hz
Overvoltagecategory II
Pollutiondegree 2
Electronics Universalvoltage
RelayDPDT
3-wirePNP
Powersupply 19..230V 50-60Hz ±10%*
19..40V DC ±10%*
*incl. ±10% of EN 61010
18V – 50V DC ±10%*
*incl. ±10% of EN 61010
Max.rippleofpower
supply
7 Vss at DC 7 Vss
Installed load / input
current
max. 22VA / 2W max. 0.5A
Signaloutput Floating relay DPDT
AC max. 250V, 8A non inductive
DC max. 30V, 5A non inductive
Open Collector:
Permanent load max. 0.4A
Short-circuit, overload and reverse polarity
protected
Output voltage equal to input voltage, drop
<2.5V
Indicatinglight Status of signal output
by built-in LED
Status of signal output
by built-in LED
Isolation Power supply to signal output: 2225Vrms
Signal output to signal output: 2225Vrms
-
Protectionclass IIII
Mechanical data
Housing Aluminium housing, powder coated RAL 5010 gentian blue
Degreeofprotection IP 67 (EN 60529), NEMA Type 4X
Processconnection Material: VN 4020: stainless steel 1.4581 (316)
VN 4030: stainless steel 1.4301 (304) or 1.4571 (316TI) (Process connection and tube
extension)
Thread: R 1½“ tapered DIN 2999 or NPT 1½“ or NPT 1¼” tapered ANSI B 1.20.1
Flanges according to selection 1.4541 (321) or 1.4404 (316L)
Triclamp
All material food grade
Oscillator Material: stainless steel 1.4581 (316) (food grade)
Overallweight
(ca.)
VN 4020: 1.7kg (3.7lbs)
VN 4030: 1.7kg (3.7lbs) +1.9kg/m (+4.2lbs per 39.3“) extension
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Series VN 4000
Technical Information / Instruction manual
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Technical data / Approvals
Operating conditions
Ambienttemp.(housing) -40°C.. +60°C (-40 .. +140°F)
Processtemperature -40°C.. +150°C (-40 .. +302°F)
For versions with Ex-approvals: see remarks on page G17.
Min.powderdensity Setting A Setting B
ca. 150 g/l (9.5lb/ft3) ca. 30 g/l (1.9lb/ft3)
Featuresofbulkmaterial No strong tendency to cake or deposit
Max. grain size 8mm (0.31“)
Max.mechanicalload 500N laterally (on oscillator rods)
Recommended protection in case of high material load: mounting of an protective angle above the
probe
Max.mechanicaltorque 250 Nm (VN 4030)
Max.processpressure 16bar (232psi)
For versions with “sliding sleeve without process overpressure” (option pos 25 a, b): unpressurized
For versions with Ex-approvals: see remarks on page G16.
RelativeHumidity 0-100%, suitable for outdoor use
Altitude max. 2.000m (6.562ft)
Approvals
GeneralPurpose
(OrdinaryLocations)
Depending on selected
version in price list.
CE EN 61010-1 (IEC/CB)
FM
CSA
GOST-R
HazardousLocations
Depending on selected
version in price list.
ATEX Dust explosion ATEX II 1/2 D Ex t IIIC T! Da/Db IP6X
IEC-Ex Dust explosion IEC-Ex t IIIC T! Da/Db IP6X
FM Dust explosion Cl. II, III Div. 1 Gr. E,F,G
CSA Dust explosion Cl. II, III Div. 1 Gr. E,F,G
Ex DIP A20/21
RTN Ex Dust explosion
Detailed allocation of types and electronics to approvals: see price list.
EMC EN 61326 -A1
Foodgradematerial According to directive 1935/2004/EC
RoHSconform According to directive 2011/65/EU
PressureEquipment
Directive(97/23/EC)
The units are not subject to this directive, because they are classied as „pressure-keeping
equipment“ and do not have a pressurized housing (see Art.1, Abs. 2.1.4).
The units are designed and manufactured in accordance to the Pressure Equipment Directive.
The unit is NOT intended for use as an “equipment part with safety function (Art.1, Abs. 2.1.3).
If the units should be used as „equipment part with safety function" please contact the manufacturer.
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Series VN 4000
Technical Information / Instruction manual
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Weather protection
cover
When the measuring device is used outdoor, the use
of the weather protection cover is recommended. It
protects the device from all atmospheric inuences
such as:
• rain water
• condensation of water
• excessively high temperatures due to insulation
• excessively low temperatures in winter
Material: PE, weathering and temperature stable
Not available for housing version d and de.
For use in Hazardous Locations: only permitted for
Category 3 (zone 22) or Division 2.
Slidingsleeve VN 4030 G1½“ ISO 228 or
1½” NPT ANSI B 1.20.1
or anges
Material:1.4301 (304) or 1.4571 (316TI)
Sealing material to the extension tube:
viton or NBR
Mountingset Screws and washers for xing the unit on a ange.
Glass window in lid To see the indicating light on the electronic from
outside.
Bulbincablegland Bright indicating light seen from outside.
Not available for use in Hazardous Locations and FM/
CSA general purpose.
Plug4-pole(incl.PE) Used instead of cable gland.
Not available for use in Hazardous Locations and FM/
CSA general purpose.
OptionsOptions
Glass window
A 100mm (3.94“)
B 165mm (6.5“)
C 88mm (3.46“)
LED
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Technical Information / Instruction manual
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Process pressure Improper installation may result in loss of process pressure.
Chemicalresistance
againstthemedium
Materials of construction are chosen based on their chemical compatibility (or inertness) for general
purposes. For exposure to specic environments, check with chemical compatibility charts before
installing.
Temperaturerange The range of the ambient and process temperature of the device must be observed (see page G6 and
for Ex-approvals page G17)
Mechanicalload The torque at the fastening spot must not exceed
300Nm (VN 4030).
Maximum length „L“ in dependence on the deviation
(in degrees) from vertical installation:
Mountinglocation Keep distance to incoming material and to the silo wall.
The installation has to be done in a way, that the sensor elements cannot hit the wall of the silo. The
ow of
the medium and xtures in the container must be considered. This is especially important for extension
length more than 3m (118.1“).
Slidingsleeve “Pressure tight” version (pos. 25 e, f):
Tighten both straining screws M8 with 20 Nm
to obtain resistance against pressure.
Flangemounting A plastic sealing must be used to tighten the ange.
Fasteningofthe
threaded process
connection
Mounting torque for the thread may not exceed 80Nm. Use a 50mm (1.97“), for units with sliding sleeve
use a 55mm (2.17“), open-end wrench. Do not fasten by turning the housing .
Foodgradematerial The materials are available for the use under normal and predictable applications (according to
directive 1935/2004 Art.3). Other conditions can inuence the safety.
Mounting
General Safety Instructions
Max. deviation Max. length “L”
5° 4000 mm (157.5“)
45° 1200 mm (47.24“)
>45° 600 mm (23.62“)
Load
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Level limit switch
Series VN 4000
Technical Information / Instruction manual
page G
Mounting
Additional Safety Instructions for Hazardous Locations
Installationregulations For devices to use in hazardous locations the respectively valid installation regulations must be
observed.
Sparks The installation has to be done in a way mechanical friction or impact can not cause sparks between
the aluminium enclosure and steel.
Mounting instructions
Oscillatingrods Do not bend, shorten or extend the oscillating rods since this will destroy the device.
Rotatablehousingand
orientationmarkingof
oscillatingrods
The housing can be rotated against the
threaded connection after mounting.
Direction of the cable
glands
When the unit is mounted from the side, ensure, that the cable glands faces downwards and are closed
to avoid water penetration into the housing.
Sealing Seal the process thread with Teon tape in case of process pressure
Switchingpoint Heavy bulk material -> the signal output switches when the oscillating rods are covered a few mm
Light bulk material -> the signal output switches, when the oscillating rods are covered a few cm
Threaded connection
Orientation marking of oscillating
rods shows the orientation of the
oscillating rods after mounting. Housing
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Level limit switch
Series VN 4000
Technical Information / Instruction manual
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Mounting
Bulk material
slides down more
easily, if the device
is mounted with
inclination
(recommended)
1½“ sliding sleeve
Switch point can be set
VN 4020 or
VN 4030
Sensitive
area
Steel angle in case of
high mechanical loading
(approx. 200mm (7.87“)
distance)
Full detector
Empty detector
Observe max.
torque
Installation in the conical part:
only for trickling material, that
cannot be pressed between the
vibration rods
CORRECT
WRONG
Orientation marking of oscillating rods
faces sideways.
Working surface too large:
-> overload, if material is discharged
-> danger of caking or crust deformation
CORRECT
Vibrating rods lead
into the product
WRONG
Socket too long:
material chokes
socket
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VN 4030
VN 4030

Level limit switch
Series VN 4000
Technical Information / Instruction manual
page G
Electrical installation
Handling In the case of inexpert handling or handling malpractice the electric safety of the device cannot
be guaranteed.
Protectiveearthing Before any electrical installation, the device must be connected to the protective earthing
terminal inside the housing.
Installationregulations The local regulations or VDE 0100 (Regulations of German Electro technical Engineers) must be
observed.
For installation of electronics "3-wire PNP" (Protection Class III), an approved power supply with
reinforced insulation to mains is required
Fuse Use a fuse as stated in the connection diagrams (page G13).
RCCBprotection In the case of a defect, the distribution voltage must automatically be cut off by a RCCB
protection switch so as to protect the user of the device from indirect contact with dangerous
electric tensions.
Powersupplyswitch A Power-supply-disconnecting switch must be provided and marked near the device.
Wiringdiagram The electrical connections have to be made according to the wiring diagram.
Supplyvoltage Compare the supply voltage applied with the specications given on the electronic and name
plate before switching the device on.
Cablegland/closing
element
The screwed cable gland and closing element must have following specications:
Ingress protection IP67, temperature range from -40°C to +70°C, UL or VDE certied (depending
on the country where the unit is installed), pull relief.
Make sure that the screwed cable gland safely seals the cable and that it is tight (danger of water
intrusion). Cable glands that are not used have to be locked with a closing element.
Conduitsystem In case of using a conduit system (with NPT thread) instead of a cable gland the regulations of
the country where the unit is installed must be observed. The conduit must have a tapered thread
either NPT 1/2“ or NPT 3/4” in accordance with the unit and ANSI B 1.20.1. Not used inlets must
be closed tight with a metal closing element.
Fieldwiringcables The diameter of the eld wiring cable has to match to the clamping range of the used cable gland.
All eld wirings must have insulation suitable for at least 250V AC. The temperature rating must
be at least 90°C (194°F).
Connectingtheterminals Make sure that max. 8mm (0.31“) of the pigtails are bared (danger of contact with live parts).
Relay and transistor
protection
Provide protection for relay contacts and output transistors to protect the device against spikes
with inductive loads.
Protectionagainststatic
charging
The housing of the unit must be grounded in any case to avoid static charging of the unit on
applications with pneumatic conveying and non-metallic containers .
General Safety Instructions
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Level limit switch
Series VN 4000
Technical Information / Instruction manual
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Electrical installation
Externalequipotential
bondingterminal
Connect with
equipotential
bonding of
the plant
Fieldwiring A pull relief must be provided for the eld wiring cables, when the device is installed with the factory
provided cable glands.
Cableglandsandconduit
systemforATEX/IEC-
Ex
Installation according to the regulations of the country, where the product is installed.
Not used entries have to be closed with blanking elements certied for this purpose.
Where available the factory provided parts must be used.
A strain relief must be provided for the eld wiring cables, when the device is installed with the factory
provided cable glands.
The diameter of the eld wiring cable must match to the clamping range of the cable clamp.
If other than the factory provided parts are used, following must be ensured:
The parts must have an approval adequate to the approval of the level sensor (certicate and type of
protection).
The approved temperature range must be from the min. ambient temperature of the level sensor to the
max. ambient temperature of the level sensor increased by 10K.
The parts must be mounted according to the instructions of the supplier.
Conduitsystem
forFMandCSA
In addition the regulations of the country must be observed. The used ameproof seals and blanking
elements must have an adequate type approval and a temperature range of at least –40°C (-40°F)
to +80°C (176°F). In addition they shall be suitable for the conditions and correctly installed. Where
available the provided original parts of the manufacturer must be used.
Commissioning Commissioning only with closed lid.
Openingthelid Before opening the lid take care, that no dust deposits or whirlings are present.
Do not remove the lid (cover) while circuits are alive.
Additional Safety Instructions for Hazardous Locations
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Series VN 4000
Technical Information / Instruction manual
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Electrical installation
Connection
Connecting
terminals
Protective
Conductor
Terminal
3-wire
PNP
Powersupply:
18 .. 50V DC ±10%*
*incl. ±10% of EN 61010
Input current: max. 0.5A
Fuse:
max. 4A, fast or slow, 250V
Signaloutput:
max. 0.4A
Output voltage equal to input
voltage, drop <2.5V
Load for example:
PLC, relay, contactor, bulb
PE Load - +
Power supply
Universalvoltage
Relay DPDT Powersupply:
19..230V 50-60Hz ± 10%* 22VA
19..40V DC ± 10%* 2W
*incl. ±10% of EN 61010
Fuse on power supply:
max. 10A, fast or slow, HBC, 250V
Signaloutput:
Floating relay DPDT
AC max. 250V, 8A, non inductive
DC max. 30V, 5A, non inductive
Fuse on signal output:
max 10A, fast or slow, HBC, 250V Signal output - +
N L
Power supply
PE
Approved power supply with reinforced
insulation to mains is required
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Series VN 4000
Technical Information / Instruction manual
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Signaloutput
FSL/FSHSetting
If the sensor is used to indicate full load, set to
Fail Safe High.
Power failure or line break is regarded as „full“
signal (protection against overcharging).
If the sensor is used to indicate empty load, set
to Fail Safe Low. Power failure or line break is
regarded as „empty“ signal (protection against
running dry).
FSH
FSL
Signal output
Signaloutput Signaloutput
Setting
Relay DTPT
3-wire PNP
LED “Signal output”
LED „Signal
output“
Setting
“FSL / FSH”
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FSL FSH FSL FSH
FSL
FSH

Level limit switch
Series VN 4000
Technical Information / Instruction manual
page G
Setting:Sensitivity/Maintenance
Sensitivity
All sensors are factory setted. Therefore, they usually do
not have to be re-setted. If the bulk material has a strong
tendency to cake or deposit, the setting switch can be
set to position „A“ so as to decrease the sensitivity of the
probe (Factory presetting = position „B“).
Approximate min. bulk density on setting:
Please contact manufacturer if you intend to use the
device for special purposes.
A
Low sensitivity
B
High sensitivity
150g/l (9.5lb/ft3) 30g/l (1.9lb/ft3)
Maintenance
Normally the device requires no maintenance. However, depending on the application, the following should be observed and
inspected:
• Mechanically damaged oscillating rods.
• Coarse cleaning of the vibrating fork.
Sensor cables
Version VN 4020: Red Yellow Blue Black
Version VN 4030: Red White Blue Black
Versionbighousing:
1. Open the housing lid
2. Remove the eld wiring cables
3. Remove the sensor cables
4. Unscrew the two fastening screws of the
electronic board
5. Take out the electronic board
6. Insert a new electronic board and tighten
fastening screws
7. Connect the sensor cables and eld wire cables
(see drawing)
Versionsmallhousing:
1. Open the housing lid
2. Remove the eld wiring cables / plug
3. Unscrew the cover plate
4. Take out the electronic board and remove internal plug
5. Insert a new electronic board in reverse sequence
6. Connect the eld wiring cables
Changeoftheelectronicboard:
Deenergise device and secure against being switched on again.
Setting „Sensitivity“
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4. 4.
3.
3.
B
A
3.
3.

Level limit switch
Series VN 4000
Technical Information / Instruction manual
page G
NotesforuseinHazardousLocations
Zone classication
Usable in
zone
ATEX
category
IEC-Ex
EquipementProtection
Level(EPL)
Dust applications 20, 21, 22 1 D Da * in case of conductive dust
additional demands for the
installation are possible.
21, 22 2 D Db
22 3 D* Dc
General Notes
Marking Devices with EX approval are marked on the name plate.
Processpressure The device construction allows process over-pressure up to 16 bar (232psi). These pressures are
allowed for test purposes. The denition of the Ex approval are only valid for a container-over-
pressure between -0.2..+0.1 bar (-2.9..+1.45psi).
For higher or lower pressures the approvals are not valid.
Processandambient
temperature
The permitted temperature ranges are marked on the name plate.
The max. permitted ambient and process temperatures (including temperature derating) stated in
this manual must be observed.
Permitted zones for mounting in partition wall
EPL (IEC-Ex) Db
Category (ATEX) 2D
Zone 21
EPL (IEC-Ex) Da
Category (ATEX) 1D
Zone 20
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VN 4020 VN 4030

Level limit switch
Series VN 4000
Technical Information / Instruction manual
page G
NotesforuseinHazardousLocations
Max. Surface Temperature and Temperature Class
The temperature marking on the type plate refers to the instruction manual.
In the following table the relevant temperature ratings are shown.
The maximum surface temperature (resp. temperature class) is the warmest temperature of the unit which could occur during
malfunction (according to Ex-denition)..
process
side
ambient side
Max.
ambient
temperature
Max. process
temperature
Max. surface
temperature
Temperature
class
(Division System)
Temperature
class
(Zone System)
60°C (140°F)
110°C (230°F) 115°C (239°F) T4A T4
120°C (248°F) 120°C (248°F) T4A T4
130°C (266°F) 130°C (266°F) T4 T4
140°C (284°F) 140°C (284°F) T3C T3
150°C (302°F) 150°C (302°F) T3C T3
Vibranivo®1
2
3
4
5
6
7
8
9
10
11
12
VN 4000 a gi161213 17