Yamatake Corporation Installation
ST3000 Smart Transmitter Series 900 Electronic Differential Pressure/Pressure Transmitter 4-25
4-4-2 :Wiring for Transmitter-- Explosion-Proof
Guidelines
Explosion-proof requires special precautions and installation methods. Refer also to
"4-4-1 :Wiring for Transmitter -- Regular Model".
WARNING
• Tighten the case cover fully, to the end, and lock.
• Clearly delineate safety responsibilities in operating procedures. Espe-
cially, for an explosion-proof transmitter, specify locking of the cover of
the transmitter case.
Locking
Before cabling can be performed. Use a 3mm hexagonal wrench to open the locking
structure.
Figure 4-20 Unlock Transmitter Case
Leading-in external cables
Leading in cables to the equipment
Refer to the instructions in the chapter of About Explosion-Proof(“Explosion pro-
tected Models” on page Safety-2) in the front of this manual.
Case cov
ock
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