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4234 Series Intrinsically Safe Power Supply Unit Instruction Manual

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This document is an instruction manual for the installation and operation of the 4234 Series Power Supply Unit (PSU), which provides a stabilized DC supply (350, 250, or 180 mA) for a katharometer unit in a hazardous area. It covers specifications, mechanical and electrical installation, interconnection diagrams, servicing, and safety certifications, including ATEX and BASEEFA intrinsic safety compliance.

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