User Manual
    <2.  Handling Cautions>
2-12
IM 01C25T02-01E
2.1.4  IECEx Certication
a.  IECEx Flameproof Type
Caution for IECEx ameproof type.
Note 1. The transmitters with optional code /SF2 
are applicable for use in hazardous 
locations:
•  No. IECEx CSA 07.0008
•  Applicable Standard:  
IEC60079-0:2004, IEC60079-1:2003 
•  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.
•  Supply Voltage: 32 V dc max.
•  Output Signal: 15 mA dc
Note 2.  Wiring
•  In hazardous locations, the cable entry 
devices shall be of a certied ameproof 
type, suitable for the conditions of use and 
correctly installed. 
•  Unused apertures shall be closed with 
suitable ameproof certied blanking 
elements. 
Note 3. Operation
•  WARNING: 
AFTER DE-ENERGIZING, DELAY 5 
MINUTES BEFORE OPENING. 
•  WARNING: 
WHEN AMBIENT TEMPERATURE ≥ 65°C,  
USE THE HEAT-RESISTING CABLES ≥ 
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 is prohibited and will void IECEx 
Certication.
b.  IECEx Intrinsically Safe Type / type n
Caution for IECEx Intrinsically safe and type n. 
Note 1. The transmitters with optional code /SS25 
are applicable for use in hazardous 
locations
•  No. IECEx CSA 05.0012
•  Applicable Standard: 
 IEC 60079-0:2000, IEC 60079-11:1999,  
IEC 60079-15:2001 
•  Ex ia IIC/IIB T4, Ex nL IIC T4 
•  Ambient Temperature: –40* to 60°C 
  * –15°C when /HE is specied.
•  Max. Process Temp.: 120°C
•  Enclosure: IP66 and IP67 
Note 2. Entity Parameters
•  Intrinsically safe ratings are as follows:
[Entity]
  Maximum Input Voltage (Vmax/Ui) = 24 V
  Maximum Input Current (Imax/Ii) = 250 mA
  Maximum Input Power (Pmax/Pi) = 1.2 W
  Maximum Internal Capacitance (Ci)  
  = 1.76 nF
  Maximum Internal Inductance (Li) = 0 µH
[FISCO IIC]
  Maximum Input Voltage (Vmax/Ui) = 17.5 V
  Maximum Input Current (Imax/Ii) = 380 mA
  Maximum Input Power (Pmax/Pi) = 5.32 W
  Maximum Internal Capacitance (Ci)  
  = 1.76 nF
  Maximum Internal Inductance (Li) = 0 µH
[FISCO IIB]
  Maximum Input Voltage (Vmax/Ui) = 17.5 V
  Maximum Input Current (Imax/Ii) = 460 mA
  Maximum Input Power (Pmax/Pi) = 5.32 W
  Maximum Internal Capacitance (Ci)  
  = 1.76 nF
  Maximum Internal Inductance (Li) = 0 µH
•  Type "n" ratings are as follows:
  Maximum Input Voltage (Vmax/Ui) = 32 V
  Maximum Internal Capacitance (Ci)  
  = 1.76 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. 










