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DAX 3F-I

Introduction

These instructions must be read carefully by any person who has or will have the responsibility for 

the installation, the use and/or the maintenance of this equipment. The warranty provided by 

DALEMANS will  be voided if installation, use and maintenance of this equipment are not in accor- 

dance with the instructions given in this manual.
By respecting these instructions you guarantee the correct operation of the apparatus. Should you 

require any further information about the use or the maintenance of this product, do not hesitate 

to contact Dalemans PRIOR to carrying out installation works.
Each apparatus must be installed, operated and maintained according to the instructions, the 

warnings and the operational limits detailed in this manual.
Use only DALEMANS original parts when you assume the maintenance of this product as specified 

in this manual. The use of non-Dalemans spare parts may seriously impair the performances of the 

apparatus. Repair or maintenance attempts carried out without observing the procedures 

described in this manual or without the assistance of our after-sales service may prevent the 

equipment from working properly and, consequently, from ensuring the safety of the occupants 

of the building and of the plants.

!

Always make sure to switch off power and declassify the hazardous area before 

carrying out replacement or modification works on components of the gas 

detection system.

Application

The 

DAX 3F-I

 gas detector is suitable for use in hygienic and/or aggressive areas of industrial and 

commercial environment. This apparatus is intended for use in explosive atmospheres of  hazard-

ous areas (zone 1 or 2). The 

DAX 3F-I

 is designed to operate as part of a fixed gas detection system 

and to provide, in association with a suitable control unit, early warnings of flammable gas hazard 

before gas concentration reaches the Lower Explosive Limit (LEL).
For further information about the detectable gases or the list of the compatible control units, 

please contact Dalemans.

Approval - Standards

As a manufacturer, Dalemans Company declares that the product described in this manual is certi-

fied for hazardous areas with an ingress protection degree IP6X and that it fulfils the requirements 

of the following directives and standards :

•  Directive 94/9/EC (ATEX)

•  EN 60079-0:2006

•  EN 60079-1:2007

•  EN 60079-7:2007

•  EN 61241-0:2006

•  EN 61241-1:2004

The said products comply with the acceptable variations originating from the type that has 

received the EC-Type Examination Certificate Nr FTZU 10 ATEX 0034X. Moreover, they have been 

designed,  manufactured  and  controlled  within  the  framework  of  an  ISO9001  certified  quality 

assurance system which has been assessed by a notified body according to annex IV and VII of the 

Directive 94/9/EC.

Summary of Contents for DAX 3F-I

Page 1: ...INSTALLATION OPERATING AND MAINTENANCE INSTRUCTIONS DAX3FI_MAN01_EN STAINLESS STEEL FLAMMABLE GAS DETECTOR DAX 3F I Ver V1R2...

Page 2: ...o switch off power and declassify the hazardous area before carrying out replacement or modification works on components of the gas detection system Application The DAX 3F I gas detector is suitable f...

Page 3: ...ty e IIC equipment group II subdivision according to the nature of the explosive GAS atmosphere methane propane ethylene hydrogen acetylene T6 T4 temperature class according to the maximum surface tem...

Page 4: ...tstone bridge measuring circuit For details of compatible control unit please contact Dalemans The flammable gas detector DAX 3F I comprises the following main parts The sensing head The junction box...

Page 5: ...n takes place on the active element The heat of reaction on the catalyst layer produces a variation in the resis tance of the active element This resistance variation which is a function of gas concen...

Page 6: ...5 DAX 3F I Dimensions Figure 3 DAX 3F I mechanical pattern 152 5 45 10 128 5 100 60 166 100 60 43 P C A...

Page 7: ...sing head may not be modified Do not open the junction box or the sensing head while explosion hazard might be present Only clean or wipe the detector surface with a wet cloth so as to avoid the risk...

Page 8: ...perts having specialist knowledge of gas dispersion with those who have knowledge of process plant system and equipment involved and with safety and engineering personnel Should you require any furthe...

Page 9: ...her information Mounting The detector should be mounted flat on a wall and according to the mechanical pattern given in f igure 3 Attach the detector to the wall using the original external mounting b...

Page 10: ...he control unit For more information about the cross sectional area of the cable and the maximum cable length please refer to the instruction manual of the control unit The overall cable diameter must...

Page 11: ...ged so that the gap between the insulation and the metallic edge of the terminal connection does not exceed 1 mm distance Equipotential bonding may be provided using either the internal earthing termi...

Page 12: ...rew the sensing head top using the suitable tool OUT00000113 Replace the sinter metal filter with a new one MEC00000010 Screw up the sensing head top and tighten Make sure the sensing head is still co...

Page 13: ...r and perform full cali bration Spare parts Article code Bracket mounting kit B O I 0 0 0 0 0 1 4 8 Cable gland Ex e M20 6 12 mm BRASS P R E 0 0 0 0 0 0 2 9 Cable gland Ex e M20 6 12 mm STAINLESS STEE...

Page 14: ...class 20 C to 70 C for T5 and T4 temperature class Humidity Ambient 20 90 HR Intermittent 10 99 HR Pressure 90 110 kPa Cable cross sectional area 1 5 2 5 mm solid wires Max cable length Refer to the...

Page 15: ...ent directive March 23 1994 on the approximation of the laws of the member states concerning equipment and protective systems intended for use in potentially explosive atmospheres EN 60079 0 standard...

Page 16: ...DALEMANS s a rue Jules M lotte 27 B 4350 Remicourt Tel 32 0 19 54 52 36 Fax 32 0 19 54 55 34 info dalemans com www dalemans com OFFICIAL DEALER...

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