YOKOGAWA YTA110 User Manual

IM 01C50B01-01E
5-5
5. WIRING
䊏 Flameproof metal conduit wiring
•A seal fitting must be installed near the terminal
box connection port for a sealed construction.
• Apply a nonhardening sealant to the threads of the
terminal box connection port, flexible metal conduit
and seal fitting for waterproofing.
F0513.EPS
Non-hazardous
area
Hazardous
area
Flameproof
heavy-gauge
steel conduit
Tee
Drain plug
Gas sealing
device
Flameproof flexible
metal conduit
Apply a nonhardening
sealant to the threads of
these fittings for
waterproofing
Seal fitting
After wiring, impregnate the fitting
with a compound to seal tubing.
Figure 5.13 Typical Wiring Using Flameproof Metal
Conduit
5.6 Grounding
Grounding should satisfy JIS Class D requirements
(with ground resistance of 100⍀ or less). Grounding
work is required for withstand voltage explosionproof
type units and intrinsic safe explosionproof type
transmitters.
NOTE
For a transmitter with built-in arrester, grounding
should satisfy JIS Class C requirements (with
ground resistance of 10⍀ or less).
Grounding terminals are located both inside and
outside the terminal board.
Use 600V vinyl insulation wires for the grounding
conductor.
F0511.EPS
Grounding
terminal
Grounding
terminal
Figure 5.14 Grounding Terminal

YOKOGAWA YTA110 Specifications

General

Brand	YOKOGAWA
Model	YTA110
Category	Transmitter
Language	English