Yokogawa EJA110E Manual de usuario descargar pdf (Pagina 20)

<2. Handling Cautions>

2-12

IM 01C25B01-01E

• Installation Requirements

Uo ≤ Ui, Io ≤ Ii, Po ≤ Pi,

Co ≥ Ci + Ccable, Lo ≥ Li + Lcable

Voc ≤ Vmax, Isc ≤ Imax,

Ca ≥ Ci + Ccable, La ≥ Li + Lcable

Uo, Io, Po, Co, Lo, Voc, Isc, Ca and La are

parameters of barrier.

Note 3. Installation

• In any safety barrier used output current

must be limited by a resistor 'R' such that

Io=Uo/R.

• The safety barrier must be IECEx certied.

• Input voltage of the safety barrier must be

less than 250 Vrms/Vdc.

• The instrument modication or parts

replacement by other than authorized

representative of Yokogawa Electric

Corporation and will void IECEx Intrinsically

safe and type n certication.

F0210-1.ai

Pressure Transmitters

IECEx certified

Safety Barrier

Supply

Hazardous Location Nonhazardous Location

General

Purpose

Equipment

+

–

+

–

+

–

+

–

[Intrinsically Safe]

Group IIC, Zone 0

F0210-2.ai

Pressure Transmitters

Supply

Hazardous Location Nonhazardous Location

+

–

+

–

Not Use

Safety Barrier

[type n]

IECEx Certified

Equipment [nL]

Group IIC, Zone 2

b. IECEx Flameproof Type

Caution for IECEx ameproof type.

Note 1. Model EJX/EJA-E Series pressure

transmitters with optional code /SF2 or

/SU2 are applicable for use in hazardous

locations:

• No. IECEx CSA 07.0008

• Applicable Standard: IEC60079-0:2004,

IEC60079-1:2003

• Flameproof for Zone 1, Ex d IIC T6...T4

• Enclosure: IP66/IP67

• Maximum Process Temperature: 120°C (T4),

100°C (T5), 85°C (T6)

• Ambient Temperature: –50 to 75°C (T4),

–50 to 80°C (T5), –50 to 75°C (T6)

• Supply Voltage: 42 V dc max.

• Output Signal: 4 to 20 mA dc

Note 2. Wiring

• In hazardous locations, the cable entry

devices shall be of a certied ameproof

type, suitable for the conditions of use and

correctly installed.

• Unused apertures shall be closed with

suitable ameproof certied blanking

elements.

Note 3. Operation

• WARNING:

AFTER DE-ENERGIZING, DELAY 5

MINUTES BEFORE OPENING.

• WARNING:

WHEN AMBIENT TEMPERATURE ≥ 65°C,

USE THE HEAT-RESISTING CABLES ≥

90°C.

• Take care not to generate mechanical

sparking when accessing to the instrument

and peripheral devices in a hazardous

location.

Note 4. Maintenance and Repair

• The instrument modication or parts

replacement by other than authorized

representative of Yokogawa Electric

Corporation is prohibited and will void IECEx

Certication.

2.10 EMC Conformity Standards

EN61326-1 Class A, Table2 (For use in industrial

locations)

EN61326-2-3

CAUTION

To meet EMC regulations, Yokogawa

recommends that customers run signal wiring

through metal conduits or use shielded twisted-

pair cabling when installing EJX/EJA-E series

transmitters in a plant.

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