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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 office
, Local Business Partner, or at www.Fisher.com.
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.
Instruction Manual Supplement
D104220X012
846 Transducer - ATEX
November 2017
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