Ectaco SENCOR SDN 450 Manual de usuario descargar pdf (Pagina 11)

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E11011 1.11

Flow Sensors

Technique and application

EX area certification

The sensors belonging to Series 400, as well as amplifiers

SEA… and SZA…, have a EG-Type Examination. The cor-

responding technical limit data and the special instruc-

tions concerning incorporation and connection expressed

in the certificates of conformity must be complied with.

Use in category 1 and 2 (zone 0 and 1)

In zone 0 and 1 only sensors having an EC design appro-

val per ATEX 100a must be used. If the sensor is installed

outdoors, a corresponding lightning protection must also

be installed. This accessory is inserted in the sensor line,

between the sensor and the switching amplifier. It limits

lightning induced voltages in the sensor line and diverts

them to earth.

ATEX 100 a

Since 1st July 2003 only devices with ATEX approval may

be used in explosive environments throughout Europe. All

EGE sensors have the relevant approval.

The operator of a plant is responsible for dividing the

hazardous areas into zones. The zones are zone 0, 1 or 2

for gas and zone 20, 21 or 22 for dust. Depending on the

requirements of the operator EGE supplies approved devi-

ces with approval certificates for the respective zones.

In dust explosive areas the maximum surface temperature

of the sensor will always be stated and must be observed

by the operator. For gas explosive sensors the approved

temperature categories will be stated.

With the exception of mining, sensors can be supplied for

all industries. Special dimensions or different materials are

also possible.

Valid standards

EN 60947-5-2

Control units; low voltage control units,

auxiliary switch, proximity switch

EN 61000-6-4

Electromagnetic compatibility (EMC)

Interference emissions in the industrial area

EN 61000-6-2

Electromagnetic compatibility (EMC)

Generic standards immunity for industrial enviroments

EN 61000-4-2 (ESD)

Electrostatic discharging immunity

EN 61000-4-3 (HF radiated)

Radiated radio-frequency electromagnetic field

immunity test

EN 61000-4-4 (Burst)

Electrical fast transient / burst immunity test

EN 61000-4-5 (Surge)

Surge immunity test

EN 60529

Protective system, IP-designation

EN 60079-0

Explosive atmospheres –

Part 0: Equipment

– General requirements

EN 60079-11

Explosive atmospheres –

Part 11: Equipment protection by intrinsic safety "i"

EN 61241-0

Electrical apparatus for use in the presence of combustible

dust – General requirements

Authorisations

TÜV NORD CERT Zertifizierungsstelle - Deutschland

(technical monitoring certification agency - Germany)

Approval for safety applications

Sensors for personal security must have a qualification

approval according to EN 954-1 and must be labeled

accordingly. Sensors that are not labeled must not be

used for applications of this kind.

Certification

TÜV NORD CERT ISO 9001

TÜV NORD CERT Quality control production

Attachment IV of the EC-Guidelines

94/9/EG

TÜV Nord Re-stamping certificate according to

EN 10204

Code: BK = black BN = brown BU = blue GN = green YE = yellow GY = grey PK = pink WH = white

Zone 0

flow

Zone 1

sensor Amplifier

Intrinsically-safe switching amplifier with galvanic

seperation between the Intrinsically-safe and the

not Intrinsically-safe zones. The amplifier must be

installed outside the hazardous zone.

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