YOKOGAWA DPharp EJX Series User Manual

<2. Handling Cautions>
2-11
IM 01C25B01-01E
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
EJX Series Pressure
Transmitters
IECEx certified
Safety Barrier
Supply
Hazardous Location Nonhazardous Location
General
Purpose
Equipment
+
–
+
–
+
–
+
–
[Intrinsically Safe]
Group IIC, Zone 0
F0210-2.ai
EJX Series Pressure
Transmitters
Supply
Hazardous Location Nonhazardous Location
+
–
+
–
Not Use
Safety Barrier
[type n]
IECEx Certified
Equipment [nL]
EJX Series Pressure
Transmitters
Group IIC, Zone 2
b. IECExFlameproofType
CautionforIECExameprooftype.
Note 1. Model EJX 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 and 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)
*–15°Cwhen/HEisspecied.
• 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 series
transmitters in a plant.
2.11 Pressure Equipment
Directive (PED)
(1) General
• EJX Series pressure transmitters are
categorized as piping under the pressure
accessories section of directive 97/23/EC,
which corresponds to Article 3, Paragraph 3 of
PED, denoted as Sound Engineering Practice
(SEP).

YOKOGAWA DPharp EJX Series Specifications

General

Brand	YOKOGAWA
Model	DPharp EJX Series
Category	Transmitter
Language	English