<2. Handling Cautions>
2-5
IM 01C25K01-01E
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 Intrinsically safe and
Nonincendive Approval.
F0203-1.ai
Class I, II, III, Division 1,
Groups A, B, C, D, E, F, G
Class 1, Zone 0 in
Hazardous (Classified)
Locations AEx ia IIC
Pressure Transmitters
Safety Barrier
Supply
Hazardous Location
Nonhazardous Location
General
Purpose
Equipment
+
–
+
–
+
–
+
–
[Intrinsically Safe]
F0203-2.ai
Pressure Transmitters
Supply
Hazardous Location
Nonhazardous Location
+
–
+
–
Class I, II, Division 2,
Groups A, B, C, D, F, G
Class 1, Zone 2, Group IIC,
in Hazardous (Classified)
Locations
Not Use
Safety Barrier
[Nonincendive]
General
Purpose
Equipment
b. FM Explosionproof Type
Caution for FM explosionproof type.
Note 1. EJX/EJA-E Series pressure transmitters
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: Type 4X
•
Temperature Class: T6
•
Ambient Temperature: –40 to 60°C
•
Supply Voltage: 42 V dc max.
32 V dc max. (F
OUNDATION
Fieldbus and
PROFIBUS PA type)
9 to 28 V dc, 27 mW (Low Power type)
•
Output signal: 4 to 20 mA
15 mA (F
OUNDATION
Fieldbus and
PROFIBUS PA type)
1 to 5 V (Low Power type)
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.”
•
Wiring connection for output signal code Q
(Low Power type) shall follow the diagram
below.
F0211.ai
Three-Wire Connection
Pressure Transmitters
Power Supply
Voltmeter
SUPPLY –
A
+
–
+
–
Four-Wire Connection
Pressure Transmitters
Power Supply
Voltmeter
SUPPLY –
A
+
–
+
–
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.
