<2. Handling Cautions>
2-6
IM 01C25F01-01E
Note 3. Operation
• Keep the “WARNING” nameplate attached to
the transmitter.
WARNING: OPEN CIRCUIT BEFORE
REMOVING COVER. FACTORY SEALED,
CONDUIT SEAL NOT REQUIRED.
INSTALL IN ACCORDANCE WITH THE
USERS MANUAL IM 01C25.
• 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
Factory Mutual Explosionproof Approval.
c. FM Intrinsically Safe Type/FM
Explosionproof Type
EJX/EJA-E Series pressure transmitters with
optional code /FU1 or /V1U1 can be selected
the type of protection (FM Intrinsically Safe
or FM Explosionproof) for use in hazardous
locations.
Note 1. For the installation of this transmitter,
once a particular type of protection is
selected, any other type of protection
cannot be used. The installation must be in
accordance with the description about the
type of protection in this instruction manual.
Note 2. In order to avoid confusion, cross out
unnecessary markings on the label other
than the selected type of protection when
the transmitter is installed.
2.9.2 CSA Certification
a. CSA Intrinsically Safe Type
Caution for CSA Intrinsically safe and
nonincendive type. (Following contents refer to
“DOC No. ICS013-A13”)
Note 1. EJX/EJA-E Series differential, gauge,
and absolute pressure transmitters with
optional code /CS1 are applicable for use
in hazardous locations
Certificate: 1606623
[For CSA C22.2]
• Applicable Standard: C22.2 No.0, C22.2
No.0.4, C22.2 No.25, C22.2 No.94, C22.2
No.157, C22.2 No.213, C22.2 No.61010-1,
C22.2 No.61010-2-030, C22.2 No.60079-0
• Intrinsically Safe for Class I, Division 1,
Groups A, B, C & D, Class II, Division 1,
Groups E, F & G, Class III, Division 1
• Nonincendive for Class I, Division 2, Groups
A, B, C & D, Class II, Division 2, Groups F &
G, Class III, Division 1
• Enclosure: Type 4X
• Temp. Code: T4
• Amb. Temp.: –50* to 60°C
* –15°C when /HE is specified.
• Process Temperature: 120°C max.
[For CSA E60079]
• Applicable Standard: CAN/CSA E60079-11,
CAN/CSA E60079-15, IEC 60529:2001
• Ex ia IIC T4, Ex nL IIC T4
• Ambient Temperature: –50* to 60°C
* –15°C when /HE is specified.
• Max. Process Temp.: 120°C
• Enclosure: IP66/IP67
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.
