Yokogawa EJX115A - Manual (Page 20)

<2. Handling Cautions>
2-12
IM 01C25K01-01E
• 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 certified.
• Input voltage of the safety barrier must be
less than 250 Vrms/Vdc.
• The instrument modification or parts
replacement by other than authorized
representative of Yokogawa Electric
Corporation and will void IECEx Intrinsically
safe and type n certification.
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 flameproof 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 certified flameproof
type, suitable for the conditions of use and
correctly installed.
• Unused apertures shall be closed with
suitable flameproof certified 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 modification or parts
replacement by other than authorized
representative of Yokogawa Electric
Corporation is prohibited and will void IECEx
Certification.
2.10 EMC Conformity Standards
EN61326-1 Class A, Table2 (For use in industrial
locations)
EN61326-2-3
CAUTION
• This instrument is a Class A product,
and it is designed for use in the industrial
environment.
Please use this instrument in the industrial
environment only.
• 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.