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1.0 Introduction

The Moflash Intrinsically Safe Sounder product (IS-S-02) is ATEX and IECEx 

certified. The  Sounder  is  approved  to  be  installed  in  Groups  I  (Mining)  and 

Group II (above ground), Zones 0, 1 or 2 with gas groups IIA, IIB, IIC and 

Zones 20, 21 and 22 for dust groups IIIC and carries a temperature classification 

of T6.  The Sounder  comprises of a 2 stage alarm and has a total of 32 selectable 

alarm tones via a DIP switch which is set upon installation.  When powered via 

a suitable Galvanic Isolator or Zener Barrier the Sounder will draw a constant 

33mA.  The Sounder has diode reverse polarity protection and is also End of 

Line resistor compatible.  

2.0 Intrinsically Safe Labelling

The product will have an individual serial number printed onto the head base 

plate, an example of the sounder label is shown below.

These products have been tested by notified body 

Element Materials Technol-

ogy Rotterdam 

who are UKAS accredited to BS EN ISO/IEC 17025:2005 and 

ISO/IEC 17065:2012.  It is also a Notified Body for the ATEX Directive, an 

IECEx Certification Body and an IECEx Testing Laboratory.

The suffix X at the end of the certificate numbers indicates that there are special 

clauses added for safe use of these units.

3.0 Types of Approval and Standards Applied

The Moflash IS Sounder product has been approved to the following standards:

IEC 60079-0:2011 / EN 60079-0:2012 + A11:2013

IEC 60079-11:2011 / EN 60079-11:2012

EN 54-3:2001+A1:2002+A2:2006 

Содержание IS-S-02

Страница 1: ...INFORMATION PLEASE READ PRIOR TO INSTALLATION Website www moflash com Email technical moflash co uk Moflash Intrinsically Safe Sounder Range S00608 Issue 7 28 07 2020 AUDIBLE SIGNALLING DEVICES 1 APPR...

Страница 2: ...nd of Line resistor compatible 2 0 Intrinsically Safe Labelling The product will have an individual serial number printed onto the head base plate an example of the sounder label is shown below These...

Страница 3: ...t time Zone 20 Explosive dust air mixture is continuously present Zone 21 Explosive dust air mixture likely to occur in normal operation Zone 22 Explosive dust air mixture not likely to occur and if i...

Страница 4: ...astic shown in Fig 1 with side cutters or a similar tool To open a locked head remove the small rubber bung from the hole on the side of the sounder insert a tool into the hole and depress the clip wh...

Страница 5: ...the base by rotating anticlockwise until it comes free Remove the appropriate fixing hole and conduit knockouts from the back box The back box provides IP66 protection For this to be maintained suitab...

Страница 6: ...llation of the IS S 02 Sounder head unit onto the installed base the alarm tone must be set see page 5 To control the Sounder use either a switch in the safe area on either the positive or negative li...

Страница 7: ...necting the Beacon ground pin to 0v as detailed in the table on page 5 For this application a barrier with 2 Diode return paths is required as shown in the diagram below Switching between return paths...

Страница 8: ...d in the entity parameters section of the installation sheet The Sounder can be turned on and off either by using a suitably placed switch in the positive or negative rails switch must be of suitable...

Страница 9: ...ch can allow reverse polarity monitoring to take place and a fire panel compatible with Intrinsically Safe products must also be used If required an external switch can be wired in series with the 1 a...

Страница 10: ...n sustained during its normal operation The enclosure is non conducting and may generate an ignition capable level of electrostatic charge under certain extreme conditions It is the responsibility of...

Страница 11: ...e units up without the correctly rated barrier could damage these products and so void any protection ratings Specific Conditions of Use 1 Clean equipment regularly to prevent dust build up with a dam...

Страница 12: ...14 400Hz O I I O I O 18 92 15 550Hz 0 7s 1000Hz 0 33s O I I I O O 1 93 16 1500Hz 2700Hz 3Hz O I I I I O 1 98 17 750Hz I O O O O O 1 93 18 2400Hz I O O O I O 1 105 19 660Hz I O O I O O 18 93 20 660Hz...

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