YOKOGAWA EJX Series User Manual page 11

Note 2. Entity Parameters
• Intrinsically safe ratings are as follows:
Maximum Input Voltage (Vmax/Ui) = 30 V
Maximum Input Current (Imax/Ii) = 200 mA
Maximum Input Power (Pmax/Pi) = 0.9 W
Maximum Internal Capacitance (Ci) = 10 nF
Maximum Internal Inductance (Li) = 0 µH
• 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.
• The safety barrier must be CSA certified.
• 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.
• The instrument modification or parts 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
nonincendive Certification.
[Intrinsically Safe]
Hazardous Location
Group IIC, Zone 0
Class I, II, III, Division 1,
Groups A, B, C, D, E, F, G
Pressure Transmitters
+
–
Supply
[Nonincendive]
Hazardous Location
Group IIC, Zone 2
Class I, II, Division 2,
Groups A, B, C, D, F, G
Class III, Division 1.
Pressure Transmitters
+
Supply
–
Nonhazardous Location
General
Purpose
Safety Barrier
Equipment
+ +
+
– –
–
F0206.ai
Nonhazardous Location
CSA Certified
Equipment
([nL] or
nonincendive)
+
–
Not Use
Safety Barrier
F0207.ai
<2. Handling Cautions>
b. CSA Explosionproof Type
Caution for CSA explosionproof type.
Note 1. Model EJX/EJA-E Series pressure transmitters
with optional code /CF1 are applicable for use in
hazardous locations:
• Certificate: 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,
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/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 specified.
• 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 conduit as
shown in the figure.
• 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 Hazardous Locations Division 1
Locations
Non-hazardous
Location Equipment
42 V DC Max.
Sealing Fitting
4 to 20 mA DC
Signal
Non-Hazardous Hazardous Locations Division 2
Locations
Non-hazardous
Location Equipment
42 V DC Max.
4 to 20 mA DC
Sealing Fitting
Signal
9
50 cm Max.
Conduit
Transmitter
F0208.ai
Transmitter
F0209.ai
IM 01C25A01-01E
2