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IECEx Certificate
of Conformity
 
INTERNATIONAL ELECTROTECHNICAL COMMISSION
IEC Certification Scheme for Explosive Atmospheres
for rules and details of the IECEx Scheme visit www.iecex.com
 
Certificate No.:
IECEx SIR 09.0098X issue No.:0
 
Status:
Current
 
Date of Issue:2009-10-28 Page 1 of 5


    
Applicant:
Topworx Inc.
3300 Fern Valley Road
Louisville
Kentucky 40213
United States of America


 
Electrical Apparatus:DX*-**0****0000***** Switchbox
Optional accessory:


 
Type of Protection:Intrisic safety and dust


 
Marking: Ex ia IIC T4 Ga
Ex tb IIIC T60°C Db
IP67 (DXP & DXS) or IP64 (DXR)
-20°C +50°C
 
Approved for issue on behalf of the IECEx
Certification Body:		D R Stubbings

 
Position:Certification Manager


 
Signature:
(for printed version)
 
Date:
 
 
1. This certificate and schedule may only be reproduced in full.
2. This certificate is not transferable and remains the property of the issuing body.
3. The Status and authenticity of this certificate may be verified by visiting the Official IECEx Website.
 
 Certificate issued by:
SIRA Certification Service
Rake Lane
Eccleston
Chester
CH4 9JN
United Kingdom


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IECEx Certificate
of Conformity
 
Certificate No.:IECEx SIR 09.0098X
 
Date of Issue:2009-10-28Issue No.: 0
 
Page 2 of 5
 
 Manufacturer:
Topworx Inc
3300 Fern Valley Road
Louisville
Kentucky 40213
United States of America


 
 Additional Manufacturing location(s):
 

This certificate is issued as verification that a sample(s), representative of production, was assessed and tested and found to comply with the IEC Standard list below and that the manufacturer's quality system, relating to the Ex products covered by this certificate, was assessed and found to comply with the IECEx Quality system requirements. This certificate is granted subject to the conditions as set out in IECEx Scheme Rules, IECEx 02 and Operational Documents as amended.


STANDARDS:
The electrical apparatus and any acceptable variations to it specified in the schedule of this certificate and the identified documents, was found to comply with the following standards:

 
IEC 60079-0 : 2004
Edition: 4.0		Electrical apparatus for explosive gas atmospheres - Part 0: General requirements
IEC 60079-0 : 2007-10
Edition: 5		Explosive atmospheres - Part 0:Equipment - General requirements
IEC 60079-11 : 2006
Edition: 5		Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
IEC 60079-26 : 2006
Edition: 2		Explosive atmospheres - Part 26: Equipment with equipment protection level (EPL) Ga
IEC 61241-1 : 2004
Edition: 1		Electrical apparatus for use in the presence of combustible dust - Part 1: Protection by enclosures "tD"
 
This Certificate does not indicate compliance with electrical safety and performance requirements other than those expressly included in the Standards listed above.


 
TEST & ASSESSMENT REPORTS:A sample(s) of the equipment listed has successfully met the examination and test requirements as recorded in

 
Test Report:
GB/SIR/ExTR09.0173/00


Quality Assessment Report:

GB/SIR/QAR07.0025/01


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IECEx Certificate
of Conformity
 
Certificate No.:IECEx SIR 09.0098X
 
Date of Issue:2009-10-28Issue No.: 0
 
Page 3 of 5
 
 
Schedule
 
EQUIPMENT:
Equipment and systems covered by this certificate are as follows:
 

The DX*-**0****0000***** Switchbox is designed to be fitted to a valve, damper or actuator to give a current feedback (4-20mA) of its position to a control system - PLC or DCS.  A digital signal (HART Protocol) is superimposed on the current signal to give feedback digitally of the position and health of the assembly as well as the ability to calibrate the unit via a hand-held device.

 There are three enclosure material options:
1 DXP - aluminium alloy
2DXS - 316 stainless steel
3

DXR - resin (Valox)

 On top of all units, the valve position is given by a visual indicator, enclosed in a transparent plastic cover.

 
 
CONDITIONS OF CERTIFICATION: YES as shown below:
 

Refer to the additional sheet.

 


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IECEx Certificate
of Conformity
 
Certificate No.:IECEx SIR 09.0098X
 
Date of Issue:2009-10-28Issue No.: 0
 
Page 4 of 5
 
 
EQUIPMENT(continued):
 

 The DX*-*H…. and DX*-*X…. versions of the Switchbox contain a 4-20 mA board (HART or non-HART respectively), which has the following safety description:

 

Ui

 =28 V 
 Ii =100 mA
 Pi =0.7 W
 Ci =14 nF
 Li =2.06 mH

In addition to the 4-20 mA board, the equipment may contain up to two additional devices, which are simple mechanical switches or NAMUR sensors.  The simple switches have a maximum input power (Pi) of 1.3 W from an intrinsically safe supply.  The NAMUR sensors are covered by the following certificate:

 

IECEx KEM 06.0036X Turck two wire proximity sensor, type ...-….-.Y1.-……/….

 

 
 
 


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IECEx Certificate
of Conformity
 
Certificate No.:IECEx SIR 09.0098X
 
Date of Issue:2009-10-28Issue No.: 0
 
Page 5 of 5
 
 
Additional information:
 

The user and installer shall comply with the following Conditions of Certification:

1 The DXP version of the Switchbox has an enclosure that is manufactured from aluminium alloy.  In rare cases, ignition sources due to impact and friction sparks could occur.  This shall be considered when the equipment is installed, especially in locations that require group II, category 1G equipment.
 2  The DXR version of the Switchbox has an enclosure that is manufactured from a non-conductive plastic that may generate an ignition-capable level of electrostatic charge.  Therefore the equipment shall not be installed in a location where the external conditions are conducive to the build-up of electrostatic charge on such surfaces.  This is particularly important if the equipment is installed in a zone 0 location.  In addition, the equipment shall only be cleaned with a damp cloth.
 3 The Switchbox may contain simple switches, which shall have a maximum input power (Pi) of 1.3 W from an intrinsically safe supply
 4

The Switchbox may contain the following IECEx-certified device:

Turck two wire proximity sensor, type ...-….-.Y1.-……/…. covered by IECEx KEM 06.0036X

If fitted, the installer shall confirm which certified sub-assembly is contained within the Switchbox and ensure compliance with the entity parameters in the certificate.

 5The supplies to the 4-20 mA board, switches and/or sensors shall be installed as separate intrinsically safe circuits.
 6The DXR (resin) enclosure shall only be installed in a location where there is a low risk of mechanical damage.

The following conditions of manufacture apply:

 1The manufacturer shall subject 100% of completed units to the dielectric strength test in IEC 60079-11:2006 clauses 6.3.12 and 10.3, by applying a voltage of 500 Vrms between all input terminals and the outer enclosure for a minimum of 60 s.  Alternatively, a voltage of 700 Vrms may be applied for 1 s.  The current flowing during the test shall not exceed 5 mA.
 2The manufacturer shall supply an up-to-date copy of IECEx KEM 06.0036X with each DXx-Nx0xxxx unit or batch of units supplied
 
 








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