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IM 1E7D0-01E
6-1
6. HAZARDOUS DUTY TYPE INSTRUMENT
6.
HAZARDOUS DUTY TYPE
INSTRUMENT
In this section, further requirements and differences for
explosion proof type instrument are described. For
explosion proof type instrument, the description in this
chapter is prior to other description in this Instruction
Manual.
NOTE
The terminal box cover is locked by special
screw. In case of opening the terminal box
cover, please use the Hexagonal Wrench
attached.
CAUTION
Be sure to lock the cover with the special screw
using the Hexagonal Wrench attached after
tightening the cover.
6.1 CENELEC (KEMA)
WARNING
Only trained persons use this instrument in
industrial locations.
(1) Technical Data
• CENELEC (KEMA) : KEMA No. Ex-94. C. 8524
EEx dm[ia]IIC T6...T3
Electrode circuit Vmax : 250V ac/dc
Excitation Circuit : 130Vp 72/75Hz
Temp. Class
T6
T5
T4
T3
Process Temp
70
85
120
150
°
C
• IEC Type-n (KEMA) : KEMA No. Ex-94. Y. 8525
Ex nA[ia]IIC T5...T3
Electrode circuit Vmax : 250V ac/dc
Excitation Circuit : 130Vp 72/75Hz
Temp. Class
T5
T4
T3
Process Temp
85
120
150
°
C
(2) Installation
WARNING
• All wiring shall comply with local installation
requirements and local electrical code.
• In hazadous locations, the cable entry devices
shall be of a certified flameproof type, suitable
for the conditions of use and correctly installed.
(3) Operation
WARNING
• Open circuit before opening the covers.
• Take care not to generate mechanical spark
when access to the instrument and peripheral
devices in hazardous locations.
(4) Maintenance and Repair
WARNING
The instrument modification or parts replacement
by other than authorized representative of
Yokogawa Electric Corporation is prohibited and
will void the certification.
6.2 FM
(1) Technical Data
• Explosionproof for Class I Division 1 Groups A, B,
C & D. Dust-ignitionproof for Class II/III Division 1
Groups E, F & G. Intrinsically safe (electrode) for
Class I Division 1 Groups A, B, C & D
Electrode circuit Vmax : 250V ac/dc
Temp. Class. T6
Enclosure : NEMA 4X
Содержание AE100D
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