Manual
    <3.  Handling Cautions>
3-5
IM 01C25R01-01E
[For CSA C22.2]
•  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
[For CSA E60079]
•  Flameproof for Zone 1, Ex d IIC T6...T4   
•  Enclosure: IP66 and 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 specied.
•  Power Supply:  
42 V dc max. (HART Communication Type) 
9 to 30 V dc, 250 mW (Modbus 
Communication Type) 
For FOUNDATION Fieldbus communication 
type, refer to IM 01C25R03-01E.
•  Output signal:  
4 to 20 mA (HART Communication Type) 
Modbus (Modbus Communication Type) 
For FOUNDATION Fieldbus communication 
type, refer to IM 01C25R03-01E.
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 gure.
•  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.
Note 3. Operation
•  WARNING: 
  AFTER DE-ENERGIZING, DELAY 5 
MINUTES BEFORE OPENING. 
  APRÉS POWER-OFF, ATTENDRE 5 
MINUTES AVANT D'OUVRIR.
•  WARNING: 
  WHEN AMBIENT TEMPERATURE ≥ 65°C,  
USE THE HEAT-RESISTING CABLES ≥ 
90°C.
  QUAND LA TEMPÉRATURE AMBIANTE 
≥ 65°C, UTILISEZ DES CÂBLES 
RÉSISTANTES Á LA CHALEUR ≥ 90°C.
•  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 modication or parts 
replacement by other than authorized 
representative of Yokogawa Electric 
Corporation and Yokogawa Corporation of 
America is prohibited and will void Canadian 
Standards Explosionproof Certication.
Non-hazardous 
Location 
Equipment
42 V DC Max. 
4 to 20 mA DC 
Signal
Non-Hazardous 
Locations
Hazardous Locations Division 1
Non-Hazardous 
Locations
Hazardous Locations Division 2
50 cm Max.
Sealing Fitting
Conduit
Non-hazardous 
Location 
Equipment
42 V DC Max. 
4 to 20 mA DC 
Signal
Sealing Fitting
F0304.ai
SUPPLY
PULSE
CHECK
ALARM
SUPPLY
PULSE
CHECK
ALARM
EJX910A
EJX910A










