Model MTG11A/18A/11B/18B/14C System configuration and structure Azbil Corporation
1-16 Model MTG11A/18A, MTG11B/18B, MTG14C
1-3 : Hazardous area approvals and CE-Mark
1-3-1 : Model MTG18A
Combination of FM approval and CSA certification for Divi-
sion 1 and Division 2
(1) Approval selection code “1”
FM approval
Protection codes
• Explosionproof with intrinsically safe electrodes for Class I, Division 1, Groups A,
B, C and D, T4;
• Dustignitionproof for Class II and III, Division 1, Groups E, F and G, T4;
at -20ºC < Tamb < +60ºC
Enclosure rating; Type 4X and IP67
Cautions
• Seal not required
• Electrode circuit is Intrinsically Safe
• Substitution of components may impair Intrinsic Safety
• Control room equipment shall not use or generate in excess of 250Vr.m.s. or DC
Installation
The equipment shall be installed in accordance with the relevant requirements of the
National Electrical Code (ANSI/NFPA70).
Grounding
To maintain Intrinsic safety of system connect conductor to earth ground so that it has
less than one ohm (1 Ω) to earth ground.
See ANSI/ISA PR12.06.01 Installation of Intrinsically Safe System for Hazardous
(Classified) Locations for guidance on installation of intrinsically safe apparatus and
systems.
CSA certification
Protection codes
• Class I, Division 1, Groups A, B, C, D; Class II, Division 1, Groups E, F, G; Class III:
Input rating 42V dc, 4-20mA. Provides intrinsically safe output to detector sensing
electrodes. Enclosure Type 4X/IP67. MWP 3.0 MPa max. Temperature Code T4, Ta =
-20ºC to +60ºC
Cautions
• Seal not required
• Cover must be kept tight while circuits are alive
• Warning: Substitution of components may impair intrinsic safety
Installation
The equipment shall be installed in accordance with the relevant requirements of the
Canadian Electrical Code, Part I.
CM2-MTG300-2001.book 16 ページ ２０１５年９月２９日 火曜日 午前１０時１４分
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