<2. Installation, Wiring and Piping>
2-2
IM 11T03E01-51E
2.1.2
GD40T (FM Explosion-proof and Intrinsically Safe
Approval)
Sealing Fitting
Conduit
475 mm (18") Max.
NON-HAZARDOUS
LOCATIONS
HAZARDOUS
LOCATIONS
GD40T
F0201.ai
Figure 2.1
1. GD40T Gas density detector for use in hazardous (classified) locations:
• Explosion-proof for Class I, Division 1, Groups B, C and D;
Dust Ignition-proof for Class II, III, Division 1, Groups E, F and G with Intrinsically
Safe sensor for Class I, II, III, Division 1, Groups B, C, D, E, F and G.
• Enclosure Rating:
NEMA 4X
• Temperature Code:
T5
• Ambient Temperature: -10 to 60°C
2. Wiring
• All wiring shall comply with National Electric Code ANSI/NAPA 70 and Local Electrical
Codes.
WARNING
Seal all conduits within 475 mm (18 inches). Refer to Figure 2.1.
3. Operation
• Note a warning label worded as follows.
WARNING
Open circuit before removing cover.
• Take care not to generate mechanical spark when access to the instrument and
peripheral devices in hazardous locations.
4. Maintenance and Repair
•
The instrument modification or parts replacement by other than authorized representative
of Yokogawa Electric Corporation is prohibited and will void the approval of Factory
Mutual Research Corporation.
Summary of Contents for GD402G /M1
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