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Baker Hughes
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8. Electrical Connection, Installation and Start-Up
• Comply with current national and local regulations for electrical installation work.
• Must be installed and put into service in conformance with EN 60079-14 and / or national
and local regulations applicable for explosible atmospheres.
•
Before carrying out any work on the device, power off the instrument or make sure the
local conditions are free of potentially explosive atmosphere for safe opening of the
cover.
• Connect the wires to the instrument terminals, taking care of complying with polarities,
maximum power dissipation allowed (2W), input signal (4-20mA).
• Before power up or after doing any work on the device, always check the cover is fully
screwed with the four screws (1). Screws up to surface contact then add ¼ to ½ turn
more.
Note: Before installation, check that the device is undamaged. In the event of damage, inform the
manufacturer whose address is shown on the serial plate.
8.1. Conduit Entry in Flameproof Application
The connections can be done with different variations taking into account approved manufacturer and requested
approvals:
A cable entry of a certified type Ex d IIC / Ex tb IIIC can be mounted directly on the single
1/2” NPT (ANSI/ASME B1.20.1) housing conduit connection or through the decompression device for
stainless steel flame arrestor option.
Decompression Device
In case an adaptor or reducer must be added, it must be apparatus certified ATEX (type Cooper CAPRI
CODEC).
The cable entry with or without its adaptor/reducer must be installed in conformance with the figure below:
Cable Gland Accessories Mounting on Instruments
