MTLCertificate Number Baseefa09ATEX0155 Issue 6

interface will not add more than the values specified in Clause 5.7 of EN 60079-11: 2012 to the parameters of the circuit

into which it is connected.

When an external intrinsically safe source is connected to these terminals it should have a source resistance of Ui / Ii and

the capacitance and either the inductance or inductance to resistance ratio (L/R) ofthe hazardous area connections must not

exceed the values detailed in the certificate of the intrinsically safe source. Hazardous area terminal 2 must not be used

when the source is connected.

Hazardous Area Terminals 2 W.r.t. 3

22V

145mA

0.80W

o

o

Load Parameters

The capacitance and either the inductance or inductance to resistance ratio (L/R) ofthe hazardous area load connected

must not exceed the following values:

GROUP CAPACITANCE INDUCTANCE OR L/RRATIO

(J.lF) (mH) (J.lH/ohm)

Hazardous Area Terminals 2 w.r.t. 1

IIC 0.165 0.91 39

lIB* 1.14 5.5 147

IIA 4.20 10.7 322

I 6.00 16.4 517

* Group IIB parameters also applicable for associated apparatus [Ex ia Da] lIIC

Notes:

1) The above load parameters apply when one ofthe two conditions below is given:

- the total Li ofthe external circuit (excluding the cable) is < 1% ofthe Lo value or

- the total Cj ofthe external circuit (excluding the cable) is < 1% ofthe Co value.

2) The above parameters are reduced to 50% when both ofthe two conditions below are given:

- the total Li ofthe external circuit (excluding the cable) is 1% ofthe Lovalue and

- the total Cj ofthe external circuit (excluding the cable) is 1% ofthe Co value.

The reduced capacitance ofthe external circuit (including cable) shall not be greater than 11lF for Groups IIB, IIA

& I and 600nF for Group IIC.

16 Report Number

GB/BAS/ExTR16.0237/00

17 Specific Conditions of Use

None

18 Essential Health and Safety Requirements

In addition to the Essential Health and Safety Requirements (EHSRs) covered by the standards listed at item 9, the

following are considered relevant to this product, and conformity is demonstrated in the report:

Clause

1.2.7

1.2.8

1.4.1

1.4.2

Subject

Protection against other hazards (LVD type requirements, etc.)

Overloading of equipment (protection relays, etc.)

External effects

Aggressive substances, etc.

Compliance

Manufacturer responsibility

User/Installer responsibility

User/Installer responsibility

User/Installer responsibility

19 Drawings and Documents

New drawings submitted for this issue of certificate:

Number

CI4541-3

Sheet

80f8

Issue

4

Date

7.16

Description

MTL45541S, MTL4541T, MTL4544S, MTL4544D

Certification Label Details - Baseefa

The above drawing is associated and held with IECEx BAS 09.0070 Iss. 6

Current drawings which remain unaffected by this issue:

Certificate No.

Baseefa09ATEX0155/2

Baseefa09ATEXO155/3

Baseefa09ATEX0155/4

Baseefa09ATEXO 155/5

Date

31 January 2011

6 August 2012

4 March 2013

27 January 2014

Comments

i) To permit the alternative fitting of ISMB3EZ** zener diodes in

place of 15MB59**BT3 components currently fitted.

ii) An alternative method of applying the conformal coating to the

PCB fitted 10 the equipment not affecting the original

assessment.

The associated test and assessment is documented in Certification

Report No. GB/BAS/ExTR10.0298/00.

To confirm the current designs of the MTL4541S, MTL4544S &

MTL4544D Repeater Power Supplies, 4/20mA have been reviewed

against the requirements of IEC 60079-0: 2011 and

EN 60079-11: 2012 10 respect of the differences from

EN 60079-0: 2009, EN 60079-11: 2007 and EN 61241-11: 2006 and

none ofthe differences affect the equipment. In accordance with EN

60079-11: 2012, the Group I capacitive load parameters were

corrected and the associated load parameter notes were updated.

The associated assessment is documented in Certification Report

No. GB/BAS/ExTR12.0181/00.

i) To permit minor component changes to the current design to

form the MTL4541T Single Channel Repeater Power Supply,

4/20mA for 2 or 3-Wire Transmitters.

ii) To confirm the current designs ofthe MTL4541S, MTL4541T,

MTL4544S & MTL4544D Repeater Power Supplies, 4/20mA

have been reviewed against the requirements of EN 60079-0:

2012 in respect ofthe differences from IEC 60079-0: 2011 and

none ofthe differences affect the equipment.

The associated assessment is documented in Certification Report

No. GB/BAS/ExTR13.0022/00.

i) To permit minor component changes to the MTL4541 T Single

Channel Repeater Power Supply, 4/20mA for 2 or 3-Wire

Transmitters not affect the original assessment.

ii) To permit minor drawing changes not affecting the original

assessment.

The associated assessment is documented in Certification Report

No. GB/BAS/ExTR14.0019/00.

Baseefa09ATEXO 155 Issue 6 26

2016

September This issue of the certificate incorporates previously issued primary

& supplementary certificates into one certificate and confirms the

current designs meet the requirements of

EN 60079-0: 2012 + All: 2013 & EN 60079-11: 2012.

The certificate also permits the manufacturer's name to be changed

on page 1 ofthe certificate and on the equipment marking.

The associated assessment is documented in Certification Report

No. GB/BAS/ExTR16.0237/00.

For drawings applicable to each issue, see original ofthat issue