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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 BAS 11.0032X issue No.:0

Certificate history:

 
Status:
Current
 
Date of Issue:2012-03-19 Page 1 of 3


    
Applicant:
The Raytel Group Limited
Raytel House
Brook Road
Rayleigh
Essex
SS6 7XH
United Kingdom


 
Electrical Apparatus:Raystat EX03 and EX04 Electronic Thermostats
Optional accessory:


 
Type of Protection:Increased safety, encapsulation, intrinsically safe, dust protected


 
Marking:

Ex e mb ia IIC T6 Ta -50°C to + 60°C Gb
Ex tb IIIC T85°C Ta -50°C to + 60°C Db IP66
 
Approved for issue on behalf of the IECEx
Certification Body:		R S Sinclair

 
Position:General 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:
Baseefa
Rockhead Business Park
Staden Lane
Buxton
Derbyshire
SK17 9RZ
United Kingdom


- PAGE BREAK -

IECEx Certificate
of Conformity
 
Certificate No.:IECEx BAS 11.0032X
 
Date of Issue:2012-03-19Issue No.: 0
 
Page 2 of 3
 
 Manufacturer:
The Raytel Group Limited
Raytel House
Brook Road
Rayleigh
Essex
SS6 7XH
United Kingdom


 
 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 : 2007-10
Edition: 5		Explosive atmospheres - Part 0:Equipment - General requirements
IEC 60079-11 : 2011
Edition: 6.0		Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
IEC 60079-18 : 2009
Edition: 3		Explosive atmospheres Part 18: Equipment protection by encapsulation "m"
IEC 60079-31 : 2008
Edition: 1		Explosive atmospheres – Part 31: Equipment dust ignition protection by enclosure 't'
IEC 60079-7 : 2006-07
Edition: 4		Explosive atmospheres - Part 7: Equipment protection by increased safety "e"
 
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/BAS/ExTR11.0061/00


Quality Assessment Report:

GB/BAS/QAR12.0003/00


- PAGE BREAK -

IECEx Certificate
of Conformity
 
Certificate No.:IECEx BAS 11.0032X
 
Date of Issue:2012-03-19Issue No.: 0
 
Page 3 of 3
 
 
Schedule
 
EQUIPMENT:
Equipment and systems covered by this certificate are as follows:
 
The Types EX03 and EX04 Electronic Thermostats comprise an encapsulated control printed circuit board, with terminals and thumbwheel switches for adjusting the set temperature protruding from the potting. The enclosure may be manufactured from aluminium alloy or a non-metallic material.

The enclosure is a type 26… to certificate IECEx PTB 08.0003U or, a type 25… to IECEx PTB 08.0003U, the terminals are type BK12 and MK6/3 to certificates IECEx SIR 05.0035U and IECEx SIR 05.0037U respectively.

The enclosure is provided with threaded cable entries, an earth assembly and a gland earthing plate.

The type EX04 is provided with an ambient air sensor and has a set point range of 0oC - 49oC, whereas the type EX03 is provided with a mineral insulated temperature sensor to control heating cables and has a set point range of 0oC - 499oC. Both sensors are Type RTL 617T to certificates IECEx BAS 11.0031X, or IECEx BAS 11.0035X.Threaded holes are provided to facilitate the connection of external cables, via a suitably certified Ex e or Ex d cable gland to maintain the IP66 ingress protection of the enclosure.

Both types are rated up to 253V 0.5A, and have two relays for switching currents up to 16A each.

Variation 0.1

When the thermostats are connected to a 99-230Va.c. supply the thermostats are coded:-

Ex e mb ia IIC T6 Ta -50oC to + 60oC Gb
Ex tb IIIC T85oC Ta -50oC to + 60oC Db IP66
 
CONDITIONS OF CERTIFICATION: YES as shown below:
 
1.  Not more than one single or multiple strand lead shall be connected to either side of the terminals, unless the conductors have been joined in a suitable manner, e.g. two conductors into a single insulated boot lace ferrule.

2.  Leads connected to the terminals shall be insulated suitable for 255V and this insulation shall extend to 1mm of the terminal throat.

3.  All terminal screws, used or unused, shall be tightened to between 0.5 Nm and 0.7 Nm.

4.  The temperature at the sensor bulb shall not exceed 585°C

     The temperature of the sensor bulb was not considered in determining the T Class quoted on this certificate. Its temperature will match the T Class of the equipment to which it is attached.

5.  The temperature at the cable gland shall not exceed 60°C.

6.  The minimum bend radius is 6 times the diameter of the probe.

7.  The minimum installation temperature of the probe is –50oC.

8.  The probe gland must be tightened to a torque of 8Nm.
 







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