Kobold NIR-9 User manual

Operating Instructions
For
Rotating Vane Level
Switch
Model NIR-9 / NIR-E9

NIR.9
Page 2 DT0471
1. Contents
1. Contents........................................................................................................2
2. Note ..............................................................................................................3
3. Instrument Inspection....................................................................................3
4. Description ....................................................................................................3
5. Operating Principle........................................................................................3
6. Mechanical connection..................................................................................4
7. Electrical connection .....................................................................................6
7.1 Signal Output .......................................................................................6
7.2 Sensitivity Adjustment..........................................................................7
8. Technical Data ..............................................................................................8
9. Dimensions ...................................................................................................9
9.1 Side installation....................................................................................9
9.2 High temperature design....................................................................10
9.3 Top installation. Flexible cable extension...........................................10
9.4 Top installation. Rigid extension ........................................................11
10. Accessories/Spare parts .............................................................................12
10.1 Vanes.................................................................................................12
10.2 Mechanical connections:....................................................................13
10.3 Extensions .........................................................................................14
11. Order Details...............................................................................................15
11.1 Spare parts/Accessories model NMZ ................................................16
12. Safety Instructions (ATEX)..........................................................................17
12.1 Area of validity ...................................................................................17
12.2 Guidelines..........................................................................................17
12.3 Protection against E.S.D. ( Electro Static Discharge ) .......................18
12.4 Chemical resistance...........................................................................18
12.5 Maintenance and repairs ...................................................................18
12.6 Storage ..............................................................................................18
13. Installation in hazardous zone.....................................................................19
14. ATEX Label Description ..............................................................................19
15. Declaration of conformity ( ATEX )..............................................................20
16. Declaration of conformity ............................................................................21
17. ATEX Certificate..........................................................................................22
18. Notes...........................................................................................................28
Manufactured by:
Kobold Mesura S.L.U
Guifré 655 1ª Planta
08918 Badalona
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.kobold.com
Edition: january 2012

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2. Note
Please read these operating instructions before unpacking and putting the unit
into operation. Follow the instructions precisely as described herein.
The devices have only to be used, maintained and serviced by persons familiar
with these operating instructions and in accordance with local regulations
applying to health & safety and prevention of accidents.
3. Instrument Inspection
Instruments are inspected before shipping and sent out in perfect condition.
Scope of delivery:
The standard delivery includes:
•Rotating level switch
•Operating instructions
4. Description
This level switch instrument for solids NIR-9, has been designed to be used in all
applications where the level of solids must be detected in tanks and silos.
Example: Grain, cereal, flour, granulated plastics, cement, sand, feed, perlite,
etc.
5. Operating Principle
A synchronous motor whit a low revolution drives a rotating vane. When material
reaches the rotating vane , its rotation is blocked. The restoring force moves the
pivoted motor away from its original position, acting a micro-switch contact
closure, wich gives out an alarm signal. A second micro-switch turns off the
motor.
When the filling level decrease from the rotating vane, a spring draws the motor
back into operation position, the micro-switch returns to operating position, and
the motor is switched back on.
A LED shows that the supply voltage is applied.

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6. Mechanical connection
NIR is normally mounted into the tank top (full level) or through the tank wall (full,
middle or empty level).
For side installation do not use NIR with mechanical extension (except NIR-96 /
NIR-E96).
NIR can be installed through a standard G1”, 1 1 ¼” G, G1 ½”, flange
F1 Ø110 mm and flange F2 Ø200 mm. (Other connections under request).
Switch level with mechanical extension can only be placed in the top.
There is a reinforced model NIR-93 available to be mounted as empty level or
middle level in big tanks and when the bulk density is superior to 1gr/cm3.
Notes:
Ensure cable gland faces
downward to avoid water
intrusion
In case of heavy material
loads and falling material
provide angled protection
Ensure vane is out of any
place where build-up may
occur
Head 360º rotatable

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6.1 Installation
Caution: Never mount the instrument in
region of falling material without an angled protection.
In this case NIR is mounted Caution: Avoid water intrusion.
out of falling material.

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7. Electrical connection
WARNING! Be sure that power supply corresponds with the
indicated in the equipment´s label.
The supply voltage is connected to terminals L(+) and N(-).
It is very important in case of continuous voltage, to respect the polarity. The
device has polarity protection.
Place fuse of 0,25A in serial with the power, and fuse (max. 2 A) to protect the
alarm contact.
The green LED indicates that the equipment is powered.
Rotary level switch NIR has potential-free changeover contact.
Provide protection for output contact to protect the device against spikes if there
are inductive loads connected.
7.1 Signal Output

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7.2 Sensitivity Adjustment
NIR has 3 positions of sensitivity adjustment: high, medium and low (factory
setting is medium).
To adjust the sensitivity, be sure that the material reaches the rotation vane, if
the motor is running it is necessary to increase the sensibility until the motor is
stopped. With the optional vanes, sensitivity can be also improved.
Bulk densities with different vanes*:
Vane type High sensibility Medium sensibility Low sensibility
N y R 0,14 gr/cm³ 0,185 gr/cm³ 0,214 gr/cm³
V 0,038 gr/cm³ 0,047 gr/cm³ 0,057 gr/cm³
X 0,04 gr/cm³ 0,05 gr/cm³ 0,06 gr/cm³
A 0,45 gr/cm
3
0,55 gr/cm
3
0,65 gr/cm
3
*Approx. Data

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8. Technical Data
Note: Kobold Mesura makes every attempt to ensure the accuracy of these
specifications but reserves the right to change them at any time.
Power supply: 24 Vdc (18…36 Vdc)
24 Vac ±10% 50/60Hz
48 Vac ±10% 50/60Hz
110 Vac ±10% 50/60Hz
230Vac ±10% 50/60Hz
Electrical connection:wire size Ø2,5 mm2
Power consumption: Max. 2VA
Contact: SPDT max. 250Vac, 2A (125VA max.).
Conduit entry: 2 cable gland M20x1,5, ATEX version
1 cable gland and 1 plug M20x1,5 standard version
Sensibility: Adjustable in 3 points: Low, Medium, High.
Max. grain size: 50 mm
Min. bulk density: 38 g/l depending on vane type. Others on request
Process connection: 1“ G aluminum mod. NIR-94, NIR-E94
1“ G st. st. 1.4305 ( AISI 303 )
1 ½“ G st. st. 1.4305 ( AISI 303 )
1 ¼ “ G st. st. 1.4305 ( AISI 303 )
Flange Ø110 mm 1.4305 ( AISI 303 )
Flange Ø200 mm 1.4305 ( AISI 303 )
Process temperature: -20…+90ºC
-20…+200ºC ( NIR-92, NIR-E92 )
Ambient temperature: -20 … +60ºC
Pressure: - 0.5….+0,5 bar.
Protection type: IP66
Housing: Polyester coated aluminum
Rotatable 360º. Threaded cover
Extensions and vanes: st. st. 1.4301 ( AISI 304 ), 1.4305 ( AISI 303 )

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9. Dimensions
9.1 Side installation
NIR-E910…G6… NIR-E930…G8…
NIR-910…G6… NIR-930…G8…
NIR-E940…G6… NIR-E9620…G6…
NIR-940…G6… NIR-962…G6…

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9.2 High temperature design
NIR-E9200…G6…
NIR-9200…G6…
9.3 Top installation. Flexible cable extension
NIR-E95L0…G6…
NIR-95L0…G6…

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9.4 Top installation. Rigid extension
Extension type W maximum length 1.500 mm.
Extension type L maximum length 4000 mm.
Extension type F maximum length 10000 mm.

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10. Accessories/Spare parts
10.1 Vanes
Type N (standard) Type X
Type V
Special vanes only for models NIR-93 and NIR-E93
Type R Type A

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10.2 Mechanical connections:
Flange type: F2 Flange type: F1
Flange type : F3 (for NIR-93/E93 only)
Welding sleeve: S6 Thread adapt. 1 ½”-1”: G8 Thread adapt. 1 ¼”-1”:G7

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10.3 Extensions
NMZ-EW10 NMZ-F10
Extension type W with flexible Extension type F1 flexible cable.
union without protection pipe. Max. Length 10000 mm
Max. Length 1500 mm
NMZ-L80 NMZ-L10
Protection pipe type L8 Protection pipe type L1
Ø35mm thread 1 ½”GM –1”GF. Ø35mm flange Ø110mm, 1”GF.
Max. length 4000 mm Max. length. 4000 mm
NMZ-L2
Protection pipe type L2
Ø35mm flange Ø200mm, 1”GF.
Max. length 4000 mm

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11. Order Details.
Model Extension Vane
Mechanical
connection 4) Supply Option
NIR-91
NIR-E91 ( ATEX)
Neck pipe l: 65 mm
NIR-92
NIR-92 (ATEX)
T. max. 200ºC
NIR-94
NIR-94 (ATEX)
Aluminum thread
0= without extension
W1) =extension without
protection pipe.
(until 1500 mm)
L2) = extension with
protection pipe.
(until 4000 mm)
Y= special
0= without
N= standard
V= foldable
X= cruciform
(only with F2
connection)
Y= special
G6 = G 1”
G7 = G 1 ¼”
G8 = G 1 ½”
F1 = flange 110mm
1” GF
F2 = flange 200mm
1” GF
YY= special
0= 230 Vac
4= 110 Vac
2= 24 Vac
5= 48 Vac
3= 24 Vdc
Y= special
0= without
Y= special
NIR-95
NIR-E95 (ATEX)
Flexible Cable
0= without extension
F3) = extension flexible
cable. (until 10 mts)
NIR-96
NIR-E96 (ATEX)
Neck pipe l:200 mm
2= 200mm
(reinforced version,
lateral installation)
Y = special
0= without
V= foldable
NIR-93
NIR-E93 (ATEX)
Reinforced
0 = without
0= without
R= reinforced
A = aggregate
Y= special
G8 = G 1 ½”
F3 = flange 110 mm
reinforced 1 ½”GF
YY = special
1) Only for top installation. Rigid extension without protection pipe max. 1,5 mts. Please specify length “ L“.
2) Only for top installation. Rigid extension with protection pipe max. 4 mts. Not available with mechanical
connection G6 y G7. Please specify length “ L “.
3) Only for top installation. Flexible stainless steel cable extension max. 10 mts, (max. pull force of the
cable 4 kN ). Please specify length “ L “.
4) Please check mechanical connection in order to ensure a perfect match between mechanical
connection and vane size.

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11.1 Spare parts/Accessories model NMZ
Model Type Description Option
NMZ-
A = process connections
G7 = thread adapter st. st. 1.4305. 1 ¼” GM - 1” GF
G8 = thread adapter st. st. 1.4305. 1 ½” GM - 1”GF
F1 = flange st. st. 1.4305 Ø110mm 1” GF
F2 = flange st. st. 1.4305 Ø200mm 1” GF
F3 = flange st. st. 1.4301 Ø110 mm 1 ½” GF
S6 = welding sleeve st. st. 1.4404 1” GF
YY= special
0= without
Y= special
D = type of vanes
N0 = standard st. st. 1.4305
V0 = foldable st. st. 1.4305
X0 = cruciform st. st. 1.4305
R0 = reinforced st. st. 1.4305
A0 = aggregate st. st. 1.4305
YY = special
E1) =extensions
L8 = protection pipe st. st. 1.4301, 1 ½”GM
L1 = protection pipe with F1 flange st.st. 1.4301
L2 = protection pipe with F2 flange st. st. 1.4301
W1 = with flexible union st. st. 1.4301 and without
protection pipe
F1 = flexible cable Ø4 mm st. st. 1.4305
YY = special
1) Please specify length “ L “.
Note: st. st. 1.4404 ( AISI 316 ), 1.4305 ( AISI 303 ), 1.4301 ( AISI 304 )

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12. Safety Instructions (ATEX)
12.1 Area of validity
These security instructions apply to NIR-E series switch level rotating and their
accessories for use in explosion-proof atmospheres conform to CE certificate
LOM 08ATEX2016 X.
12.2 Guidelines
These security instructions must be applied to the NIR-E series used in dust explosion
hazard environments, category 1/2D.
NIR-E level switch has a metal housing that fits a motor with gear and all electronic
and electrical control components and has also a rotating vane to detect the product.
The housing must be installed in the zone defined by category 2D.
The vane and shaft could be installed in the zone defined by category 1D.
The mechanical connection element of the NIR-E will be installed in the wall
separating zones 2D and 1D.
It is necessary to follow carefully the instructions from the hazardous areas where the
NIR-E will be installed as well as the safety instructions included in this manual.
Temperature class and/or surface temperature relates solely to a device operated at
ambient temperature. On installation, the actual temperature class for process
operation has to be determined.
Inlet bushing and cable glands must conform to the certification for their type in
accordance with the directive.
Verify that all data written in the label of the NIR-E matches data required for the
installation.
Verify that there is no mechanical stress or deformation due to installation in the tank.
Remove power supply and verify that no explosion risk is present before opening
cover of the housing.
Check that cover of housing is correctly mounted before applying power to the
instrument.
The installation of instruments in hazardous areas must be exclusively done by trained
people.
IMPORTANT: Verify that the instrument ground is connected to the system ground.

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12.3 Protection against E.S.D. ( Electro Static Discharge )
Rotating level with plastic parts that can become electrically charged, must bear a
warning label. Electrical charging must be avoided at all costs. Pay attention to the
following:
- Avoid rubbing the device.
- Never clean the device dry.
- Do not install the device near material airflows or near steam outlets.
12.4 Chemical resistance
Ensure that the device construction materials have chemical resistance sufficient to
prevent mechanical deformations that may affect the device.
12.5 Maintenance and repairs
The instrument does not require maintenance or servicing.
Repairs must be only carried out by Kobold Mesura (manufacturer).
12.6 Storage
Measuring instruments should be protected against humidity and dust.
Storage temperature: -40ºC….+85ºC.

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13. Installation in hazardous zone
In hazardous zones, NIR-E must be installed with housing in zone 21/22
(category 2) or in safety zone. Mechanical connection must be installed in the
wall separating zones of category 2 and 1.
The axis and vane respectively must be installed in zone 20
(category 1). Installation must be done by ATEX expertise people.
14. ATEX Label Description
Notified body

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15. Declaration of conformity ( ATEX )
DT0459
DECLARACIÓN DE CONFORMIDAD CE
EC DECLARATION OF CONFORMITY
EG-KONFOMITÄTSERKLÄRUNG
DÉCLARATION DE CONFORMITÉ
DICHIARAZIONE DI CONFORMITÀ CE
KOBOLD MESURA SLU
Guifré, 655 08918 Badalona (España)
Declara, bajo la propia responsabilidad, que el producto
Declares under our sole responsibility, that the product
Erklärt in alleiniger Verantwortung, daß das produkt
Déclare sous sa seule responsabilité, que le produit
Dichiara sotto la propia responsabilità, che il prodotto
Rotating vane level switch
NIR-E9
A los cuales se refiere esta declaración, son conformes a las siguiente Directivas Europeas:
To which this declaration relates is in conformity with the following European Directives:
An auf das diese Erklärung verweist, sie mit den Europäischen Richtlinien im Einklang stehen folgend:
À auxquels se réfère cette déclaration, ils sont conformes aux Directives Européennes suivant :
A ai quali si riferisce questa dichiarazione, sono conformi alle direttive europee seguente:
EMC2004/108/EC LVD2006/95/EC ATEX94/9/EC RoHS2002/95EC
Normas armonizadas y documentos de la normativa aplicados:
Applied harmonised standards and normative documents:
Angewandte harmonisierte Normen oder normativer Dokumente:
Normes harmonisées et documents normatifs appliqués :
Norme armonizzate e documenti normativi applicati:
EN61010-1 :2001 EN61241-0:2006
EN61000-6-2 :2006 EN61241-1:2004
Certificado de examen CE de tipo Marcado
EC-type examination certificate Marking
EG-baumusterprübescheinigung Markierung
Attestation d´examen CE de type Inscription
Certificazione per esame di tipo CE Marcatura
LOM05ATEX2061 II 2/1D Ex t IIIC T85ºC Db/Da
Fabricado en: KOBOLD MESURA SLU C/ Guifré, 655 08918 BADALONA (Spain)
Made in:
Hergesteltlt in:
Fabriqué dans:
Fabbricato in:
Organismo notificado : LOM 0163 Número notificación : LOM 05ATEX9070
Notified organism Number notification
Mitgeteilter Organismus Zahlmitteilung
Organization annoncée Nombre notification
Organismo informato Notifica di numero
Badalona January 2012 Gerente
Antonio Sánchez Tomás