Fisher Manuals & Guides: Fisher 646 Electro-Pneumatic Transducer-IECEx Approval Information Manuals & Guides

Instruction Manual Supplement

D104202X012

646 Transducer

May 2017

IECEx 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 646 instruction manual (D101351X012
available from your Emerson sales office or Local Business Partner, or at Fisher.com

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

646 Electro‐Pneumatic 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.

Conditions of Certification

Intrinsically Safe

WARNING

Substitution of components may impair intrinsic safety.

-40_C ≤ Ta ≤ +71_C ; T5 (Ta ≤ +40_C) ; T4 (Ta ≤ +71_C)

Entity Parameters: U

30 V , li = 150 mA , Pi = 1.0 W , Ci = 0 nF , Li = 0 mH

i =

www.Fisher.com

646 Transducer

May 2017

Flameproof

WARNING

Disconnect power before opening.

-40_C ≤ Ta ≤ +71_C ; T6 (Ta ≤ +71_C)

Type n

WARNING

Disconnect power before opening.

-40_C ≤ Ta ≤ +71_C ; T6 (Ta ≤ +71_C)

Refer to table 1 for additional information.

Instruction Manual Supplement

D104202X012

Table 1. Approval Information

Certificate Certification Obtained Entity Rating Temperature Code

Ui = 30 VDC
Intrinsically Safe
Gas
Ex ia IIC T4/T5 Ga

IECEx

Neither Emerson, Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance
of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.

Fisher is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions,
Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners.

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

www.Fisher.com

Flameproof
Gas
Ex d IIC T6 Gb

Type n
Gas
Ex nA IIC T6 Gc

Ii = 150 mA

Pi = 1.0 W

Ci = 0 nF

Li = 0 mH

T4 (Tamb ≤ 71°C)
T5 (Tamb ≤ 40°C)

- - - T6 (Tamb ≤ 71°C)

- - - T6 (Tamb ≤ 71°C)

2

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