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Chapter 2 Installation of this Device
2-4-2 Wiring for Explosion-Proof Models
(1) Guidelines
When wiring for TIIS flameproof models, in addition to the descriptions below, see the
descriptions in section "2-4-1 General Wiring" For details, see “Factory Explosion-Proof
Equipment Guide for Users” and “Factory Electrical Equipment Explosion-Proofing Guidelines
- Technical Guidelines conforming to International Standards 2008” by the Research Institute of
Industrial Safety.
(2) Caution
Pay particular attention to the following items when performing wiring work.
• If the TIIS special explosion-proofing specifications are selected as specifications for this device,
a pressure-resistant packing cable gland will be included. The certification testing was passed
with this as part of the transmitter case. Accordingly, note that explosion-proofing certification
will not be guaranteed if wiring is done using something other than the included cable gland.
• The case cover of the transmitter cannot be opened when in an explosive atmosphere.
(3) Locking
This product has a locking structure. Before wiring, first unlock the transmitter case cover using
anM3 hexagonal wrench. After wiring, fasten the case cover sufficiently, and lock it. For explosion-
proof models, locking the case cover on the transmitter case is an absolute requirement. A hexagonal
wrench for locking is included.
Lock
Figure 2-48. Transmitter Case Locking
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