<2. Handling Cautions>
2-6
IM 01C25B01-01E
• Type "n" or Nonincendive ratings are as
follows:
Maximum Input Voltage (Vmax/Ui) = 30 V
Maximum Internal Capacitance (Ci) = 10 nF
Maximum Internal Inductance (Li) = 0 µH
• 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 barreir used output current
must be limited by a resistor 'R' such that
Io=Uo/R or Isc=Voc/R.
• ThesafetybarriermustbeCSAcertied.
• Input voltage of the safety barrier must be
less than 250 Vrms/Vdc.
• Installation should be in accordance with
Canadian Electrical Code Part I and Local
Electrical Code.
• Dust-tight conduit seal must be used when
installed in Class II and III environments.
• Theinstrumentmodicationorparts
replacement by other than authorized
representative of Yokogawa Electric
Corporation and Yokogawa Corporation
of America is prohibited and will void
Canadian Standards Intrinsically safe and
nonincendiveCertication.
F0204-1.ai
Class I, II, III, Division 1,
Groups A, B, C, D, E, F, G
EJX Series Pressure
Transmitters
Safety Barrier
Supply
Hazardous Location Nonhazardous Location
General
Purpose
Equipment
+
–
+
–
+
–
+
–
[Intrinsically Safe]
Group IIC, Zone 0
F0204-2.ai
EJX Series Pressure
Transmitters
Supply
Hazardous Location Nonhazardous Location
+
–
+
–
Class I, II, Division 2,
Groups A, B, C, D, E, F, G
Class III, Division 1.
Not Use
Safety Barrier
[Nonincendive]
CSA Certified
Equipment
([nL] or
nonincendive)
EJX Series Pressure
Transmitters
Group IIC, Zone 2
b. CSAExplosionproofType
Caution for CSA explosionproof type.
Note 1. Model EJX Series pressure transmitters
with optional code /CF1 are applicable for
use in hazardous locations:
• Certicate:2014354
• Applicable Standard: C22.2 No.0,
C22.2 No.0.4, C22.2 No.0.5, C22.2 No.25,
C22.2 No.30, C22.2 No.94,
C22.2 No.61010-1-04, C22.2 No.60079-0,
C22.2 No.60079-1
• Explosion-proof for Class I, Groups B, C and
D.
• Dustignition-proof for Class II/III, Groups E, F
and G.
• Enclosure: TYPE 4X
• Temperature Code: T6...T4
• 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°Cwhen/HEisspecied.
• Supply Voltage: 42 V dc max.
• Output Signal: 4 to 20 mA dc
Note 2. Wiring
• All wiring shall comply with Canadian
Electrical Code Part I and Local Electrical
Codes.
• In hazardous location, wiring shall be in
conduitasshowninthegure.
• WARNING:
A SEAL SHALL BE INSTALLED WITHIN
50cm OF THE ENCLOSURE.
UN SCELLEMENT DOIT ÊTRE INSTALLÉ À
MOINS DE 50cm DU BOÎTIER.
• WARNING:
WHEN INSTALLED IN CL.I, DIV 2, SEAL
NOT REQUIRED.
UNE FOIS INSTALLÉ DANS CL I, DIV 2,
AUCUN JOINT N'EST REQUIS.
Non-hazardous
Location
Equipment
42 V DC Max.
4 to 20 mA DC
Signal
Non-Hazardous
Locations
Hazardous Locations Division 1
50 cm Max.
Sealing Fitting
Conduit
SUPPLY
PULSE
CHECK
ALARM
EJX Series
F0205-1.ai