Fisher Approval: IM Supplement: Fisher 846 Current-to-Pressure Transducers-FM Approvals Manuals & Guides

Instruction Manual Supplement

D104219X012

846 Transducer - FM

June 2017

FM Hazardous Area Approvals

™

Fisher

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 Fisher.com

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

846 Current‐to-Pressure Transducer

),

.

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.

Special Conditions of Use

Intrinsically Safe, Explosion-proof, Non-Incendive

1. The apparatus enclosure contains aluminum and is considered to constitute a potential risk of ignition by impact or
friction. Care must be taken into account during installation and use to prevent impact or friction.

Refer to table 1 for additional approval information.

Table 1. FM Hazardous Area Classifications

Certification Body Certification Obtained Entity Rating Temperature Code

Vmax = 30 VDC
Imax = 100 mA
Pmax = 1.0 W
Ci = 0.016 mF
Li = 20 mH

- - - T4 (Tamb ≤ 60_C)

T4 (Tamb ≤ 60_C)

FM

IS Intrinsically Safe
 Class I, II, III Division 1 Groups A,B,C,D,E,F,G
 per drawing GE59147 (see figure 1)

XP Explosion-proof
 Class I Division 1 Groups B,C,D
DIP Dust Ignition-proof
 Class II, III Division I Groups EFG
NI Non-incendive
 Class I Division 2 Groups A,B,C,D

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846 Transducer - FM

June 2017

Figure 1. FM Installation Drawing GE59147

Instruction Manual Supplement

D104219X012

GE59147

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of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.

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The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not
to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are
governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such
products at any time without notice.

Emerson Automation Solutions

Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Cernay, 68700 France
Dubai, United Arab Emirates
Singapore 128461 Singapore

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2

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