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DAX 3F-I

Glossary

Ex d :

 mode of protection by flameproof enclosure “d”  in compliance with standards EN 60079-0 

and EN 60079-1 applying to electrical equipment intended for use in explosive gas atmospheres. 

The parts which can ignite the explosive atmosphere are placed in an enclosure which can with-

stand the pressure developed during an internal explosion of an explosive mixture, and which 

prevents the transmission of the explosion to the explosive atmosphere surrounding the enclosure.

Ex e :

 mode of protection by increased safety “e” in compliance with standard EN 60079-7 applying 

to electrical equipment intended for use in explosive gas atmospheres. Additional measures are 

applied so as to give increased security against the possibility of excessive temperatures and of 

the occurrence of arcs and sparks in normal service or under specified abnormal operations.

Ex tD :

  mode  of  protection  by  enclosure  “tD”  in  compliance  with  standards  EN  61241-0  and 

 

EN 61241-1 applying to electrical equipment for use in presence of combustible dust. The protec

-

tion is based on the limitation of the maximum surface temperature of the enclosure and on the 

restriction of dust ingress into the enclosure to avoid ignition of a combustible dust layer or cloud.

94/9/EC :

 European Council and Parliament 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 general requirements applying to equipment intended for use in explosive 

atmospheres.

EN 60079-1 :

 

standard applying to equipment protected by flameproof enclosure “d” and intend-

ed for use in explosive gas atmospheres.

EN 60079-7 :

 standard applying to equipment protected by increased safety “e” and intended for 

use in explosive gas atmospheres.

EN 61241-0 :

 standard general requirements applying to electrical apparatus intended for use in 

the presence of combustible dust. 

EN 61241-1 :

 

standard applying to electrical apparatus protected by enclosure “tD” and intended 

for use in the presence of combustible dust.

Environment - WEEE Directive

The crossed-out wheelie bin logo on this product indicates that you are held 

to respect the regulation in force on the collection and recycling of Waste 

Electrical and Electronic Equipment (WEEE).

These provisions are intended to preserve the natural resources used for 

manufacturing this product and to avoid the dispersion of substances 

potentially harmful for the environment and human health.

Therefore, to dispose of your end-of-life product, you MUST hand it over to a designated collection 

point for the recycling of electrical and electronic Equipment. For further information about the 

collection points in your area, contact your local city office.

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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