Yokogawa EJX930A - Manual (Page 21)

<3. Handling Cautions>
3-4
IM 01C25R01-01E
WARNING
Maintaining the safety of explosionproof
equipment requires great care during mounting,
wiring, and piping. Safety requirements also
place restrictions on maintenance and repair.
Please read the following sections very carefully.
WARNING
The range setting switch must not be used in a
hazardous area.
WARNING
Make sure to apply necessary protections on the
external temperature input cable, so as to avoid
damages leading to an earth fault.
IMPORTANT
All the blind plugs which accompany the EJX
transmitters upon shipment from the factory are
certified by the applicable agency in combination
with the EJX series transmitters. The plugs which
are marked with the symbols “◊ Ex” on their
surfaces are certified only in combination with
the EJX series transmitters.
3.9.1 FM Approval
a. FM Explosionproof Type
Caution for FM explosionproof type.
Note 1. EJX multivariable transmitter with optional
code /FF1 are applicable for use in
hazardous locations.
• Applicable Standard: FM3600, FM3615,
FM3810, ANSI/NEMA 250
• Explosionproof for Class I, Division 1,
Groups B, C and D.
• Dust-ignitionproof for Class II/III, Division 1,
Groups E, F and G.
• Enclosure rating: NEMA TYPE 4X.
• Temperature Class: T6
• Ambient Temperature: –40 to 60°C
• Power Supply:
42 V dc max. (HART Communication Type)
9 to 30 V dc, 250 mW (Modbus
Communication Type)
For F OUNDATION Fieldbus communication
type, refer to IM 01C25R03-01E.
• Output signal:
4 to 20 mA (HART Communication Type)
Modbus (Modbus Communication Type)
For F OUNDATION Fieldbus communication
type, refer to IM 01C25R03-01E.
Note 2. Wiring
• All wiring shall comply with National Electrical
Code ANSI/NFPA70 and Local Electrical
Codes.
• When installed in Division 1, “FACTORY
SEALED, CONDUIT SEAL NOT
REQUIRED.”
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.
3.9.2 CSA Certification
a. CSA Explosionproof Type
Caution for CSA explosionproof type.
Note 1. EJX multivariable transmitter 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