Yokogawa EJX115A User Manual
Page 11
<2. Handling Cautions>
9
IM 01C25A01-01E
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.
F0206.ai
Class I, II, III, Division 1,
Groups A, B, C, D, E, F, G
Pressure Transmitters
Safety Barrier
Supply
Hazardous Location
Nonhazardous Location
General
Purpose
Equipment
+
–
+
–
+
–
+
–
[Intrinsically Safe]
Group IIC, Zone 0
F0207.ai
Pressure Transmitters
Supply
Hazardous Location
Nonhazardous Location
+
–
+
–
Class I, II, Division 2,
Groups A, B, C, D, F, G
Class III, Division 1.
Not Use
Safety Barrier
[Nonincendive]
CSA Certified
Equipment
([nL] or
nonincendive)
Group IIC, Zone 2
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
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
SUPPL
Y
PULSE
CHECK
ALARM
Transmitter
F0208.ai
Non-Hazardous
Locations
Hazardous Locations Division 2
Non-hazardous
Location Equipment
42 V DC Max.
4 to 20 mA DC
Signal
Sealing Fitting
SUPPL
Y
PU
LS
E
CHECK
ALARM
Transmitter
F0209.ai
H
an
dlin
g C
au
tio
ns
2