Emerson Fisher 846 Instruction Manual Supplement

Instruction Manual Supplement

D104220X012

ATEX Hazardous Area Approvals

Fisher

846 Current‐to-Pressure Transducer

™

Hazardous Area Classifications and Special Instructions for "Safe Use" and

Installation in Hazardous Locations

Certain nameplates may carry more than one approval, and each approval may have unique installation/wiring

requirements and/or conditions of "safe use". These special instructions for "safe use" are in addition to, and may

override, the standard installation procedures. Special instructions are listed by approval.

Note

This information supplements the nameplate markings affixed to the product and the 846 instruction manual (D102005X012),

available from your

Emerson sales

Always refer to the nameplate itself to identify the appropriate certification.

WARNING

Failure to follow these conditions of "safe use" could result in personal injury or property damage from fire or explosion,

and area re‐classification.

Specific Conditions of Use

Intrinsically Safe

The equipment must not be submitted to mechanical impacts or frictions.

The intrinsically safe apparatus shall only be connected to associated intrinsically safe apparatus certified for the

intended use. This association shall comply with the requirements of the standard EN 60079-25.

For barriers (linear and active) the association Uo and Io must be such that Po v 1W, within the set limits

Uo : 40V, Io : 57mA, Po : 1W, Co : 24,5nF, Lo : 9,98mH or

Uo : 22V, Io : 200mA, Po : 1W, Co : 78,5nF, Lo : 0.39mH.

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846 Transducer - ATEX

November 2017