Kobold NSC User manual

Operating Instructions
For
Capacitance Level
Model: NSC

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1.Content
1. Content .........................................................................................................2
2. Note ..............................................................................................................3
3. Instrument Inspection....................................................................................3
4. Description....................................................................................................3
5. Operating principle........................................................................................3
6. Mechanical connection..................................................................................4
7. Electrical connection.....................................................................................5
8. Adjustment....................................................................................................6
8.1 Module replacement ............................................................................8
9. Models ..........................................................................................................9
10. Technical Data............................................................................................10
11. Safety Instructions (ATEX)..........................................................................11
12. Installation in classified zone (ATEX)..........................................................13
13. Label Description (ATEX)............................................................................13
14. Models ATEX..............................................................................................14
15. Declaration of conformance ( ATEX )..........................................................15
16. Declaration of conformance........................................................................16
17. ATEX Certificate..........................................................................................17
18. NOTES........................................................................................................21
Manufactured by:
Kobold Mesura S.L.U
Avda. Conflent, 68 nave 15
08915 Badalona
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.kobold.com
june 2017

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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 are 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:
Capacitive Level Monitor NSC
Cable gland 1x M20x1,5 ( 2 atex version )
Operating Instructions
4.Description
This level switch instruments for solids NSC, has been designed to be used in all
applications where the level of the solid must be detected in tanks and silos.
5.Operating principle
The NSC sensor together with the wall of the tank is a capacitor.
The dielectric constant of this capacitor is the air when the product (media) doesn’t
reach the sensor. When the product covers the sensor, the dielectric constant is
the product one. The electronic circuit of the NSC detects this change and
activates an output relay.

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6.Mechanical connection
The NSC has a thread of 1”BSP male. The sensitive part of the probe goes from
the PP isolator to the end of the probe.
Check that lenght of probe is according the level to be detected.
When the housing is installed in the outdoor it is recommended to protect it against
sun radiation and rain by means of a small roof.
When installing the probe of the NSC by means of an extension sleeve, the max.
lenght of this sleeve must be 70mm to avoid short-circuit in between the tank and
the probe due to product accumulation inside the sleeve.

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7.Electrical connection
VERY IMPORTANT
Be sure that power supply corresponds with the indicated in the equipment’s
label.
GREEN led lighting indicates that equipment is powered
RED led lighting indicates that output relay is activated.
Using SELECTOR 1, you can choose relay operation NO or NC when the
product covers the probe.
Protection fuse of 0.5mA must be put in serial with supply line.
Ground terminal is internally tied to the connection thread.
Be sure that ground line has same potential than ground of thank.
If you are not sure, please do not connect the ground terminal since the
instrument could be damaged.

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8.Adjustment
After installation and connection verification, we proceed to AJUST SENSITIVITY to fit
the NSC with the tank and the product to measure.
Check that product doesn’t reach the probe. Power supply GREEN LED must be ON
1. Put DIP-SWITCH 1 to “MAX” position.
2. Turn the “SENSITIVITY ADJUSTMENT screw” clockwise until RED LED
lights.

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3. Turn slowly the “SENSITIVITY ADJUSTMENT screw” counter clockwise until
RED LED switches off.
4. Turn 360º more counter clockwise to avoid a critical adjustment. In case of
sticky products it is recommended to increase this adjustment.
The instrument is now adjusted. When product will reach the probe relay will be
activated and RED LED will light.
If we want the relay to work the REVERSE, put DIP-SWITCH 1 to “MIN”.
Check that no product remains on the probe when unloading the tank.

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8.1 Module replacement
MODCAP modules are delivered with DIP-SWITCHES 2, 3 and 4 adjusted with its own
probe. In case of replacement, following procedure must be done with the probe free of
product:
1. With DIP-SWITCH 1 to “MAX” and 2, 3 and 4 to “MIN”, turn the multiturn
potentiometer totally to clockwise (20 turns). RED LED will switch ON.
2. In case that RED LED doesn’t lights, move DIP-SWITCH 4 (drawing 1) to
ON. If RED LED still remains OFF, do same with DIP SWITCH 3 (drawing 2)
and finally with DIP-SWITCH 2 (drawing 3) until RED LED finally lights.
Drawing 1 Drawing 2 Drawing 3
3. Once DIP-SWITCHES are correctly settled the SENSITIVITY ADJUSTMENT
must be done (chapter 8).

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9.Models
There are 2 basic models of NSC:
NSC..R
The probe is a rod made of st.st. and covered with PTFE.
It is used for minimum and intermediate level detection.
It is produced a Standard version with a sensor of a maximum length of 3000mm
NSC..C
The probe is a flexible cable covered with PP, with a st.st. weight at the end. It is
used for maximum level detection.

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10. 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.
Supply: 24, 110, 230 Vac ó 18 a 36 Vdc.
Max. Power: 1 VA
Process connection: 1G
Other connections: DIN Flange, clamp, etc.
Power supply and relay status LED.
Polycarbonate housing IP.65.
Ambient Temperature: -20…+60 ºC.
Process Temperature: -20…+80ºC.
Cable gland: 1 x M20x1,5 ( standard version ), 2 x M20x1,5 ( atex version ).
Relay Output: max. 250 Vca 1 A.
Sensitivity adjustment by multi-turn trimmer.
Vdc polarity reverse protection.
Minimum or maximum security adjustment.
Rod version probe (NSC.R) covered with PTFE. Flexible cable st.st. probe
(NSC.C) or steel covered with PP.
ONLY ATEX VERSION:
Certified:
ATEX II 2/1 tD[iaD]iaD A21/20 IP65 T85 ºC Ta: -20ºC/+60ºC
Aluminium housing IP.65

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11. Safety Instructions (ATEX)
1. Validity
This security considerations must be applied to all level switches NSC...EX when
used in explosive atmospheres under CE certificate type LOM 05ATEX2060 X.
2. General considerations.
Operating principle of level switches NSC...EX is the capacity variation of the media
when product is present. They are used for level control in hazardous zones.
They can be used in hazardous zones group II and category 1/2D.
Probe of the instrument can be installed in hazardous zones category 1D.
The connection element of the instrument is mounted in the border of zones 2D and
1D.
All instructions and recommendations must be followed during the installation of the
instrument in hazardous areas. Also the ones mentioned on this manual.
Cable glands must be selected according to the required certification.
Verify that label contents fits requirements of application.
All requirements of the ATEX2014/34/EU Directive must be correctly followed and
also the national rules related to measurement instruments used in hazardous areas.
For instance: EN 60079-0, EN 60079-31, EN 60079-11 and all the other ones related
to the required certification.
Remove power supply before opening cover of the housing or at least be sure that
no explosion risk is present.
Check that cover of housing is correctly mounted before applying power to the
instrument.
Verify that there is no mechanical stress due to installation on the tank.
It is very important to verify that the instrument ground and the system ground are
correctly connected.
The installation of instruments in hazardous areas must be exclusively done by
trained people.
3. Protection against electrostatic discharge
Level switches with plastic parts that can acquire electrostatic charges, must have a
corresponding warning label.
Avoid situations of electrostatic discharges like:
-Avoid friction on plastic parts.
-Avoid cleaning with a dry cloth
-Avoid installing close the steam sources or pneumatic product sources.

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4. Chemical resistance:
Verify that materials of the instrument are chemically compatible with the product to
measure and application.
5. Special conditions for safe use:
It is required for safety the adequate connection of protective conductor and the
bonding to earth of the head box.

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12. Installation in classified zone (ATEX)
In classified zones, NSC. ATEX version, must be installed with the housing in zone
21,22 (category 2) or NOT CLASSIFIED.
Process connection is mounted in the border wall between areas of category 2 and 1.
Probe can be mounted in ZONE20 (Category 1).
Installation must be done by people trained in ATEX environments.
13. Label Description (ATEX)

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14. Models ATEX

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15. Declaration of conformance ( ATEX )
DT0329
DECLARACIÓN DE CONFORMIDAD EU
EU DECLARATION OF CONFORMITY
EU-KONFORMITÄTSERKLÄRUNG
DÉCLARATION DE CONFORMITÉ
DICHIARAZIONE DI CONFORMITÀ EU
KOBOLD MESURA SLU
Avda. Conflent, 68 nave 15 08915 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
SOLICAP.400…EX
NSC-…EX…
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:
Mit folgenden Richtlinien konform ist:
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:
EMC2014/30/EU LVD2014/35/EU ATEX2014/34/EU RoHS2011/65/EU
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 :2011 EN61241-0:2006 (acc. EN60079-0:2013)
EN61000-6-2 :2006 EN61241-1:2004 (acc. EN60079-31:2016)
EN61241-11:2006 (acc. EN60079-11:2013)
Certificado de examen CE de tipo Marcado
EC-type examination certificate Marking
EG-Baumusterprüfbescheinigung Markierung
Attestation d´examen CE de type Inscription
Certificazione per esame di tipo CE Marcatura
LOM05ATEX2060X
II 2/1 Ex tD[iaD]iaD A21/20 IP65 T85ºC Ta:-20ºC/+60ºC
Fabricado en: KOBOLD MESURA SLU Avda. Conflent, 68 nave 15 08915 BADALONA (Spain)
Made in:
Hergestellt in:
Fabriqué dans:
Fabbricato in:
Organismo notificado : LOM 0163 Número notificación : LOM 05ATEX9070
Notified organism Number notification
Zertifizierungsstelle Zertifikatsnummer
Organization annoncée Nombre notification
Organismo informato Notifica di numero
Badalona june 2017 Azzam Charmand ( Gerente )

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16. Declaration of conformance
DT0329
DECLARACIÓN DE CONFORMIDAD EU
EU DECLARATION OF CONFORMITY
EU-KONFORMITÄTSERKLÄRUNG
DÉCLARATION DE CONFORMITÉ
DICHIARAZIONE DI CONFORMITÀ EU
KOBOLD MESURA SLU
Avda. Conflent, 68 nave 15 08915 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
SOLICAP-400…
NSC-…
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:
Mit folgenden Richtlinien konform ist:
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:
EMC2014/30/EU LVD2014/35/EU RoHS2011/65/EU
Normas armonizadas y documentos de la normativa aplicados:
Applied harmonised standards and normative documents:
Angewandte harmonisierte Normen oder normative Dokumente:
Normes harmonisées et documents normatifs appliqués :
Norme armonizzate e documenti normativi applicati:
EN61010-1 :2011
EN61000-6-2 :2006
Fabricado en: KOBOLD MESURA SLU Avda. Conflent, 68 nave 15 08915 BADALONA (Spain)
Made in:
Hergestellt in:
Fabriqué dans:
Fabbricato in:
Badalona june 2017 Azzam Charmand ( Gerente )

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17. ATEX Certificate

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