Yokogawa EJA110E Bedienungsanleitung PDF herunterladen (Seite 16)

<2. Handling Cautions>

2-8

IM 01C25B01-01E

2.9.3 ATEX Certication

(1) Technical Data

a. ATEX Intrinsically Safe Ex ia

Caution for ATEX Intrinsically safe type.

Note 1. Model EJX/EJA-E Series pressure

transmitters with optional code /KS21 for

potentially explosive atmospheres:

• No. DEKRA 11ATEX0228 X

• Applicable Standard:

EN 60079-0:2009, EN 60079-11:2007,

EN 60079-26:2007, EN 61241-11:2006

• Type of Protection and Marking code:

Ex ia IIC T4 Ga

Ex ia IIIC T85 ºC T100 ºC T120 ºC Db

• Group: II

• Category: 1G, 2D

• Ambient Temperature for EPL Ga:

–50 to 60°C

• Ambient Temperature for EPL Db:

–30* to 60°C

* –15°C when /HE is specied.

• Process Temperature (Tp.): 120°C max.

• Maximum Surface Temperature for EPL Db:

T85°C (Tp.: 80°C)

T100°C (Tp.: 100°C)

T120°C (Tp.: 120°C)

• Enclosure: IP66 / IP67

Note 2 Electrical Data

• In type of explosion protection intrinsic safety

Ex ia IIC or Ex ia IIIC, only for connection to a

certied intrinsically safe circuit with following

maximum values:

Ui = 30 V

Ii = 200 mA

Pi = 0.9 W

(Linear Source)

Maximum internal capacitance; Ci = 27.6 nF

Maximum internal inductance; Li = 0 µH

Note 3. Installation

• Refer to the control drawing. All wiring shall

comply with local installation requirements.

Transmitter

Supply

Safety Barrier

Nonhazardous Location

[Control Drawing]

Hazardous Location

–

F0206.ai

*1: In any safety barriers used the output current must be

limited by a resistor “R” such that Io=Uz/R.

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

DEKRA Intrinsically safe Certication.

Note 5. Special Conditions for Safe Use

WARNING

• In the case where the enclosure of the

Pressure Transmitter is made of aluminium,

if it is mounted in an area where the use of

category 1 G apparatus is required, it must

be installed such, that, even in the event of

rare incidents, ignition sources due to impact

and friction sparks are excluded.

• Electrostatic charge may cause an exlosion

hazard. Avoid any actions that cause the

gerenation of eletrostatic charge, such as

rubbing with a dry cloth on coating face of

the product.

• In case of the enclosure of the Pressure

Transmitter with paint layers, if it is mounted

in an area where the use of category 2D

apparatus is required, it shall be installed in

such a way that the risk from electrostatic

discharges and propagating brush

discharges caused by rapid ow of dust is

avoided.

• To satisfy IP66 or IP67, apply waterproof

glands to the electrical connection port.

• When the lightning protector option is

specied, the apparatus is not capable

of withstanding the 500V insulation test

required by EN60079-11. This must be taken

into account when installing the apparatus.

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