Pepperl+Fuchs NVFRH-125E Manuale utente

0102

ISO9001

NVFRH-125E

LEVEL SENSOR

FÜLLSTANDSSENSOR

CAPTEUR DE NIVEAU

NIVEAUFØLER

PROCESS AUTOMATION

MANUAL

With regard to the supply of products, the current issue of the following docu-

ment is applicable: The General Terms of Delivery for Products and Services of

the Electrical Industry, published by the Central Association of the Electrical In-

dustry (Zentralverband Elektrotechnik und Elektroindustrie (ZVEI) e.V.) in its

most recent version as well as the supplementary clause: "Expanded reserva-

tion of proprietorship"

Es gelten die Allgemeinen Lieferbedingungen für Erzeugnisse und Leistungen

der Elektroindustrie, herausgegeben vom Zentralverband Elektroindustrie

(ZVEI) e.V. in ihrer neusten Fassung sowie die Ergänzungsklausel: "Erweiterter

Eigentumsvorbehalt".

Les conditions de vente générales pour les produits et les services de l'industrie

des équipements électriques publiées par la Fédération de l'industrie électron-

ique (ZVEI) s'appliquent dans leur toute dernière version, tout comme la clause

complémentaire "Réserve de propriété élargie".

De almene leveringsbetingelser for produkter og ydelser fra elektronikindus-

trien, der er udgivet af Zentralverband Elektroindustrie (ZVEI) e.V. i den seneste

udgave samt tillægsklasulen: "Udvidet ejendomforbehold" er gældende".

LEVEL SENSOR

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1 Safety .............................................................................2

1.1 General .........................................................................................................2

1.2 Used Symbols..............................................................................................2

1.3 Declaration of Conformity ..........................................................................3

1.4 Intended use ................................................................................................3

1.4.1 Identification ..................................................................................................3

1.5 Delivery, Transport and Storage.................................................................4

1.6 Installation and Commissioning ................................................................4

1.6.1 Installing the sensor ......................................................................................4

1.6.2 Installation in connection with intrinsically safe circuits .................................4

1.6.3 Sensor cable .................................................................................................4

1.7 Maintenance.................................................................................................5

1.8 Repair ...........................................................................................................5

1.9 Disposal .......................................................................................................5

1.10 Applied standards and directives..............................................................5

2 Product Specifications .................................................6

2.1 Function .......................................................................................................6

2.2 Layout and dimensions ..............................................................................7

2.3 Product program .........................................................................................8

3 Installation.....................................................................9

3.1 Mounting in containers or tanks................................................................9

3.2 Electrical connection .................................................................................9

4 Troubleshooting.......................................................... 10

4.1 System care ............................................................................................... 10

5 Technical specifications ............................................ 11

5.1 Sensor NVFRH-125E ................................................................................. 11

Level sensor

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LEVEL SENSOR

Safety

1 Safety

1.1 General

The operator of the system is responsible in terms of planning, mounting, commissioning,

operating and maintenance.

Installation and commissioning of all devices must be performed by a trained professional only.

Protection of operating personnel and the system is not ensured if the product is not used in

accordance with its intended purpose.

Laws and regulations applicable to the usage or planned purpose of usage must be observed.

Devices are only approved for proper usage in accordance with intended purpose. Improper

handling will result in voiding of any warrantee or manufacturer's responsibility.

The Declaration of Conformity, Certificate of Compliance, Statement of Conformity, EC-type-

examination certificate and data sheets are an integral part of this document.

The data sheet contains the electrical data of the Declaration of Conformity, the Certificate of

Compliance and the EC-type-examination certificate.

The documents mentioned are available from http://www.pepperl-fuchs.com or contact your

local Pepperl+Fuchs representative.

1.2 Used Symbols

Safety-relevant Symbols

Danger!

This symbol indicates a warning about a possible danger.

In the event the warning is ignored, the consequences may range from personal injury to death.

Warning!

This symbol indicates a warning about a possible fault or danger.

In the event the warning is ignored, the consequences may course personal injury or heaviest

property damage.

Caution!

This symbol warns of a possible fault.

Failure to observe the instructions given in this warning may result in the devices and any

connected facilities or systems develop a fault or fail completely.

Level sensor

LEVEL SENSOR

Safety

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EN - 3

Informative Symbols

Action

This symbol marks an acting paragraph.

1.3 Declaration of Conformity

All products have been developed and manufactured taking into consideration applicable

European standards and regulations.

The manufacturer of this product, Pepperl+Fuchs GmbH in D-68301 Mannheim, Germany, has

a certified quality assurance system in conformity with ISO 9001.

1.4 Intended use

The level sensor NVFRH-125E (referred to as "sensor" in the following sections) is designed to

prevent containers or tanks containing flammable liquids such as petrol and oil from

overflowing.

The sensor NVFRH-125E must always be connected to an ATEX-approved, intrinsically safe

warning device of type NVO5-11 (see product program).

1.4.1 Identification

Note!

This symbol brings important information to your attention.

Note!

A Declaration of Conformity can be requested from the manufacturer.

ISO9001

Level sensor

Pepperl+Fuchs GmbH

68301 Mannheim/ Germany

NVFRH-125E

DEMKO 07 ATEX 142588

II 1G Ex ia IIB T3

204906 2008-02

4 - EN

LEVEL SENSOR

Safety

1.5 Delivery, Transport and Storage

Check the packaging and contents for damage. In the event of damage, notify the postal

service or express agent and inform the supplier.

Check the scope of supply for completeness and correctness using the order and delivery

papers.

Keep the original packaging.

The device should always be stored or transported in the original packaging.

Always store the device in a dry and clean environment. Observe the permissible storage

temperature (see data sheet).

1.6 Installation and Commissioning

1.6.1 Installing the sensor

The sensor may be installed in potentially explosive zone 0 in accordance with Directive

94/9/EC (ATEX). The sensor must not be installed in places with potentially aggressive vapors.

The sensor and warning device must be free of voltage during installation and maintenance.

The warning device must only be connected to the supply voltage once the sensors are

mounted and connected properly.

The identification plate is part of the product and should not be removed.

The sensor has IP54 protection at the connection head side and IP68 protection at the

container or tank side and is weather and oil-resistant.

When installing the device in the container or tank, observe the permissible ambient

temperature in the range from -20 °C...60°C (253 K ... 333 K).

1.6.2 Installation in connection with intrinsically safe circuits

Installation of the intrinsically safe power circuits of the devices is permitted in potentially

explosive zones, whereby, in particular, safe separation from all non-intrinsically safe power

circuits must be guaranteed.

The intrinsically safe current circuits must be installed according to valid setup regulations.

For the interconnection of the intrinsically safe field devices and the intrinsically safe power

circuits of the associated devices, the respective maximum values of the field device and the

associated device with regard to explosion protection must be observed (proof of intrinsic

safety). EN 60079-14/IEC 60079-14 must be observed.

1.6.3 Sensor cable

Sensor cables must not be installed in cable or conductor bundles together with other current

circuits. Avoid installing sensor cables parallel to other cables that may transmit interfering

signals, which impair the sensor signal and thus the alarm function

If you extend the sensor cable, observe the applicable ATEX specifications with regard to color,

quality and constancy. Use an unscreened cable with a conductor size of 1 mm².

LEVEL SENSOR

Safety

204906 2008-02

EN - 5

1.7 Maintenance

When operating containers or tanks filled with flammable fluids, observe any standards,

directives or laws that stipulate the need for regular system inspections or sensor checks.

1.8 Repair

The devices may not be repaired, changed or manipulated. If there is a defect, the product

must always be replaced with an original part.

1.9 Disposal

Disposal of devices and their packaging material must be performed in compliance with the

applicable laws and guidelines of the corresponding country.

The devices do not contain batteries which need to be disposed of separately from the

products.

1.10 Applied standards and directives

EN 50014

EN 50020

EN 50178

EN 60079-14

EN 61000-6-2

EN 61000-6-3

ATEX Directive 94/9/EC

EMC Directive 89/336/EEC

Low Voltage Directive 73/23/EEC

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LEVEL SENSOR

Product Specifications

2 Product Specifications

2.1 Function

The sensor is designed for use with oil products.

The level sensor is a PTC resistor sensor. It is energized via an intrinsically safe relay.

The PTC resistor warms up if it is enclosed by air and, at the same time as falling current, the

ohmic resistance in the PTC resistor sensor increases. The intrinsically safe relay is in normal

status.

If the PTC resistor is enclosed by liquid, it does not heat up and the current increases. The

intrinsically safe relay switches to alarm position.

The sensor can distinguish between liquid and air.

Caution!

Malfunction or damage through the use of the sensor as a level sensor in glues and paints

Glues and paints can coagulate when heated and stick to the sensor. This can impair the

properties of the sensor during temperature change and the safety and operation of the sensor,

or the complete alarm system, is no longer guaranteed.

Do not use the sensor as a level sensor in glues and paints or in liquids with similar properties.

Level sensor

LEVEL SENSOR

Product Specifications

204906 2008-02

EN - 7

2.2 Layout and dimensions

The level sensor NVFRH-125E is delivered in the following individual components:

• Connection head

• Process connector with ½¨ internal and 1¨external thread

• PTC resistor sensor sealed in plastic tube, fitted to ½¨ tube sleeve, with 5 m cable

The sensor element, cable and connection head with process connector are mounted on the

system in situ. The cable is inserted in a steel tube of the required length (not supplied).

The switching point of the level sensors is at the same level as the 5 mm bore on the plastic

tube.

1Connection head

2Process connection with screw connection 1¨

3Steel tube ½¨, provided by customer

4Cable, length 5 m

5Sensor sealed in plastic tube

6Switching point

12 25L

PG16

R½

Ø½"

204906 2008-02

8 - EN

LEVEL SENSOR

Product Specifications

2.3 Product program

Warning device

Sensor

Description Type code

Intrinsically safe warning device, 230 V AC NVO5-11

Description Type code

Level sensor, for detecting excessive liquid levels NVFRH-125E

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