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IM 1E7B0-02E
12-1
12. EXPLOSION PROTECTED TYPE INSTRUMENT
12. EXPLOSION PROTECTED 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 User's
Manual.
CAUTION
The terminal box cover and display cover is
locked by special screw. In case of opening the
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.
12.1 CENELEC ATEX
(KEMA)
WARNING
Only trained persons use this instrument in
industrial locations.
(1) Technical Data
No. KEMA 02ATEX2022
Group category : II 2G
EEx dme[ia]IIC T6...T3
Electrode Circuit Um : 250V ac/dc
Excitation Circuit : 130Vpeak max. 72/75Hz,
0.2A max.
Temp. Class.
T6
T5
T4
T3
Max Process Temp.
+70
+85
+120
+130
°
C
Enclosure : IP67
(2) Electrical Connection
The type of electrical connection is stamped near the
electrical connection port accordiing to the following
codes.
Screw Size Marking
ISO M20x1.5 female M
ANSI 1/2NPT female A
(3) 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.
• Unused apertures shall be closed with suitable
flameproof certified blanking elements. (The
plug attached is flameproof certified.)
(4) Operation
WARNING
• Wait 10 min. after power is turned off, defore
opening the covers.
• Take care not to generate mechanical spark
when access to the instrument and peripheral
devices in hazardous locations.
(5) 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.