Baker Hughes Masoneilan 12400 Series, Instruction Manual, Page: 10 / 17

10 | Baker Hughes © 2019 Baker Hughes Company. All rights reserved.
7. ASSEMBLY AND INSTALLATION
7.1. Assembly
The 12400 must be first mounted onto a torque tube, a mechanism chamber et depending the
type with a displacer chamber.
•
Refer to the 12400 Instruction and Operation Manual IOM GEA19367 manual for further
details.
•
Take into account all special conditions of used listed in §10 .
7.2. 12400 flameproof installation
The 12400 may be installed in gas and dust explosive atmospheres of groups IIA, IIB, IIC and
IIIC, category II 2GD for zones 1, 2, 21 and 22 with "db" and
“tb” protection mode.
VOLTAGE SUPPLY
FROM CONTROL SYSTEM
Hazardous Zones 1, 2, 21, 22 Non-Hazardous Zone
7.3. 12400 Intrinsic Safety and type n installation
The 12400 may be installed in gas and dust explosive atmospheres of groups IIA, IIB, IIC and
IIIC, category II 1GD for zones 0, 1, 2, 20, 21 and 22 with "ia" protection mode.
VOLTAGE SUPPLY
FROM CONTROL SYSTEM
Hazardous Zones 0, 1, 2, 20, 21, 22 Non-Hazardous Zone
Barrière de
sécurité
Nota:
▪
It is under the user responsibility to check the installation against Intrinsic safety rules
taking into account entity parameters of all devices in the loop in addition of temporary one
like PC or HART communicator, measurement devices, etc.
▪
The HART communicator must be approved for Intrinsic Safety application. Read its
instruction manual and apply the device serial plate marking.