Kobold NBK-RV200NO Manuale utente

Operating Instructions

for

Level switch model

Model: NBK-RV200NO/NC

and NBK-RN200NO/NC

NBK-Rx200Nx

page 2 NBK-Rx200Nx K03/0323

We don’t accept warranty and liability claims neither upon this publication nor in

case of improper treatment of the described products.

The document may contain technical inaccuracies and typographical errors. The

content will be revised on a regular basis. These changes will be implemented in

later versions. The described products can be improved and changed at any time

without prior notice.

1. Contents

1. Contents........................................................................................................2

2. Note ..............................................................................................................3

3. Instrument Inspection....................................................................................3

4. Regulation Use .............................................................................................4

5. Operating Principle........................................................................................5

6. Mechanical Connection.................................................................................6

7. Electrical connection.....................................................................................7

8. Technical Information....................................................................................8

9. Order Codes .................................................................................................8

10. Dimensions ...................................................................................................8

11. Disposal........................................................................................................9

12. EU Declaration of Conformance .................................................................10

Manufactured and sold by:

Kobold Messring GmbH

Nordring 22-24

D-65719 Hofheim

Tel.: +49(0)6192-2990

Fax: +49(0)6192-23398

E-Mail: [email protected]

Internet: www.kobold.com

NBK-Rx200Nx

NBK-Rx200Nx K03/0323 page 3

2. Note

Please read these operating instructions before unpacking and putting the unit

into operation. Follow the instructions precisely as described herein.

The instruction manuals on our website www.kobold.com are always for currently

manufactured version of our products. Due to technical changes, the instruction

manuals available online may not always correspond to the product version you

have purchased. If you need an instruction manual that corresponds to the

purchased product version, you can request it from us free of charge by email

([email protected]) in PDF format, specifying the relevant invoice number and

serial number. If you wish, the operating instructions can also be sent to you by

post in paper form against an applicable postage fee.

Operating instructions, data sheet, approvals and further information via the QR

code on the device or via www.kobold.com

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.

When used in machines, the measuring unit should be used only when the

machines fulfil the EC machinery directive.

3. Instrument Inspection

Instruments are inspected before shipping and sent out in perfect condition.

Should damage to a device be visible, we recommend a thorough inspection of

the delivery packaging. In case of damage, please inform your parcel service /

forwarding agent immediately, since they are responsible for damages during

transit.

Scope of delivery:

The standard delivery includes:

•Level switchmodel: NBK-RV200NC/NO or NBK-RN200NC/NO

NBK-Rx200Nx

page 4 NBK-Rx200Nx K03/0323

4. Regulation Use

Any use of the Level switch, model: NBK-RV200NC/NO or NBK-RN200NC/NO,

which exceeds the manufacturer’s specification, may invalidate its warranty.

Therefore, any resulting damage is not the responsibility of the manufacturer. The

user assumes all risk for such usage.

NBK-Rx200Nx

NBK-Rx200Nx K03/0323 page 5

5. Operating Principle

The KOBOLD type NBK-RV200Nx/NBK-RN200Nx level switches can be used on

all KOBOLD magnetically-operated level gauges. The switching behaviour is

bistable. Should the electrical supply fail and return, the position of the impulse

magnet will be "memorised". Because of its low mass switching element this level

switch is particularly suitable in installations with strong vibrations, The level

switch type NBK-RV200NO/NC is reduced to a Reed miniswitch for low level

AC/DC loads.

The level switch type NBK-RN200NO/NC is additional equipped with 2 resistors

to meet the 2-wire NAMUR specification (Rs=1k, Rp=10k).

fig.1: Principle schematic of the NBK-RV200NO/NC

fig.2: Principle schematic of the NBK-RN200NO/NC

NBK-Rx200Nx

page 6 NBK-Rx200Nx K03/0323

6. Mechanical Connection

The mounting of the switch is done by an pipe clamp as shown in Fig. 3/4. The

cable gland is directed downwards in any case. The switching point is situated

nearby the middle of the box. The heat protection is situated between the switch

box and the mounting bracket.

ON (contact closed)

OFF (contact open)

fig.4: Mounting NBK-Rx200NC

OFF (contact open)

ON (contact closed)

level

fig.3: Mounting NBK-Rx200NO

NBK-Rx200Nx

NBK-Rx200Nx K03/0323 page 7

7. Electrical connection

Authorised skilled personnel only recommended to connect the electrical circuits.

fig. 7: safety precautions

for Reed switch in DC

and AC application

NBK-

RN200NO/NC

fig. 6: electrical connection

NBK-RN200NO/NC

NBK-

RV200NO/NC

small load

fig. 5: electrical connection

NBK-RV200NO/NC

NBK-Rx200Nx

page 8 NBK-Rx200Nx K03/0323

8. Technical Information

Operating instructions, data sheet, approvals and further information via the QR

code on the device or via www.kobold.com

9. Order Codes

Operating instructions, data sheet, approvals and further information via the QR

code on the device or via www.kobold.com

10.Dimensions

Operating instructions, data sheet, approvals and further information via the QR

code on the device or via www.kobold.com

NBK-Rx200Nx

NBK-Rx200Nx K03/0323 page 9

11.Disposal

Note!

•Avoid environmental damage caused by media-contaminated parts

•Dispose of the device and packaging in an environmentally friendly

manner

•Comply with applicable national and international disposal regulations and

environmental regulations.

Batteries

Batteries containing pollutants are marked with a sign consisting of a crossed-out

garbage can and the chemical symbol (Cd, Hg, Li or Pb) of the heavy metal that

is decisive for the classification as containing pollutants:

Cd1Hg2Pb3Li4

1. „Cd" stands for cadmium

2. „Hg" stands for mercury

3. „Pb" stands for lead

4. „Li" stands for lithium

Electrical and electronic equipment

NBK-Rx200Nx

page 10 NBK-Rx200Nx K03/0323

12.EU Declaration of Conformance

We, KOBOLD Messring GmbH, Hofheim-Ts, Germany, declare under our sole

responsibility that the product:

Level Switch Model: NBK-RV200NO/NC and NBK-RN200NO/NC

to which this declaration relates is in conformity with the standards noted below:

EN IEC 63000:2018 Technical documentation for the assessment of electrical

and electronic products with respect to the restriction of hazardous substances

Additional for NBK-RN200Nx:

DIN EN 60947-5-6:2000

Low-voltage switchgear and controlgear - Part 5-6: Control circuit devices and

switching elements, DC interface for proximity sensors and switching amplifiers

(NAMUR)

Also, the following EC guidelines are fulfilled:

2011/65/EURoHS (category 9)

2015/863/EU Delegated Directive (RoHS III)

Hofheim, 17 March 2023

H. Volz M. Wenzel

General Manager Proxy Holder

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