<2. Handling Cautions>
2-5
IM 01C25W05-01EN
• Nonincendive for
Class I, Division 2, Groups A, B, C, D;
Class II, Division 2, Groups F, G;
Class III, Division 1;
Class I, Zone 2, Group IIC
• Enclosure: IP66/IP67 and Type 4X
• Temperature Class: T4
• Ambient temperature: –50 to 60°C
Note 2. Electrical Parameters
• [EJX****-P, EJA****-P]
Supply/Output Circuit (Terminals: +, –)
Ui: 30 V
Ii: 200 mA
Pi: 0.9 W
Ci: 27.6 nF
Li: 0 mH
Ii and Pi: not applicable to nonincendive
field wiring
Communication Circuit (Connector)
Uo: 8.2 V
Io: 160 mA
Po: 0.3 W
Co: 7.6 μF
Lo: 1 mH
• [EJX****-S, EJA****-S]
Ui: 8.2 V
Ii: 200 mA
Pi: 0.4 W
Ci: 6 μF
Li: 0 mH
Note 3. Installation
• No revision to this drawing without prior
approval of FM.
• Installation must be in accordance with the
National Electric Code (NFPA70), ANSI/ISA-
RP12.06.01, and relevant local codes.
• The Associated Apparatus must be an FM-
approved linear power supply.
• The following conditions must be satisfied for
each circuit.
Voc (or Uo) ≤ Ui
Isc (or Io) ≤ Ii
Po ≤ Pi
Ca (or Co) ≥ Ci + Ccable
La (or Lo) ≥ Li + Lcable
• Control equipment connected to the
Associated Apparatus must not use or
generate a voltage more than Um of the
control equipment.
• The control drawing of the Associated
Apparatus must be followed when installing
the equipment.
• In case Nonincendive Field Wiring Concept
is used for the interconnection, FM-approved
Associated Nonincendive Field Wiring
Apparatus, which meets the following
conditions, must be used as the Power
Supply / Control Equipment.
Voc (or Uo) ≤ Ui
Ca (or Co) ≥ Ci + Ccable
La (or Lo) ≥ Li + Lcable
• Dust-tight conduit seals must be used when
installed in Class II or Class III environments.
• WARNING – POTENTIAL ELECTROSTATIC
CHARGING HAZARD – WHEN THE
EQUIPMENT IS USED IN HAZARDOUS
LOCATIONS, AVOID ANY ACTIONS WHICH
GENERATE ELECTROSTATIC CHARGES,
SUCH AS RUBBING WITH A DRY CLOTH.
• WARNING – SUBSTITUTION OF
COMPONENTS MAY IMPAIR INTRINSIC
SAFETY AND SUITABILITY FOR
HAZARDOUS LOCATIONS
Note 4. Maintenance and Repair
WARNING
Only personnel authorized by Yokogawa Electric
Corporation can repair the equipment.
Note 5. Specific Conditions of Use
WARNING
• Precautions shall be taken to minimize the
risk from electrostatic discharge of painted
parts.
• When the enclosure of the Pressure
Transmitters is made of aluminum alloy, if
it is mounted in Zone 0, it must be installed
such that, even in the event of rare incidents,
an ignition source due to impact and/or
friction sparks is excluded.
• Model EJX****-P and EJA****-P series
pressure transmitters are not capable of
withstanding the dielectric strength of
500 V r.m.s. between the intrinsically safe
circuit and the enclosure.
