Yokogawa ADMAG CA - Manual (Page 99)

IM 1E8B0-01E 13-1
13. HAZARDOUS DUTY TYPE INSTRUMENT
13. HAZARDOUS DUTY TYPE INSTRU-
MENT
• 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 Instruction
Manual.
• The terminal box cover and display cover are locked by special screw. In
case of opening the terminal box cover, please use the Hexagonal
Wrench attached.
• Be sure to lock the cover with the special screw using the Hexagonal
Wrench attached after tightening the cover.
13.1 FM (Only for sizes 15 to 100 mm(0.5 to 4 in))
(1) Technical Data
• Applicable Standard:
FM 3600, FM 3611, FM 3615, FM 3810
NEMA 250
• Explosion proof for Class I, Division 1 Groups A, B, C & D.
Dust-ignition proof for Class II/III, Division 1 Groups E, F & G.
Temp.Code: T6
Ambient Temp.: –20
°
C to +50
°
C (–4 to 122
°
F)
Maximum power supply voltage: 250 Vac/ 130 Vdc
Enclosure: NEMA 4X
• Non incendive for Class I, Division 2 Groups A, B, C & D Suitable for class II,
Division 2, Groups F & G;Class III Division 1& 2
Temp.Code: T4A
Ambient Temp.: –20
°
C to +50
°
C (–4 to 122
°
F)
Maximum power supply voltage: 250 Vac/ 130 Vdc
Enclosure: NEMA 4X
(2) Installation
• Installation shall be in accordance with the manufacturer’s instructions and
the National Electric Code, ANSI/NFPA-70
• In hazardous locations, wiring to be in conduit as shown in the figure.
(3) Operation
• Open circuit before opening the covers and seal all conduits with in 18
inches in hazardous locations.
• Take care not to generate mechanical spark when access to the instru-
ment and peripheral devices in hazardous locations.
WARNING
WARNING
WARNING