ATEX Sounders Zone 1 & Zone 2 Signalling Bell Ex de – Eaton MEDC dGW 21 Hazardous Area Sounder
Eaton MEDC dGW 21 are ATEX sounders (signalling bell) that were designed to warn, call and signal in group II explosive atmospheres and rough environmental conditions in hazardous areas. The signalling bell produces a sound volume of approx. 105dB(A) at 1 meter distance.
The frequency of the sound of the bell is approx 1kHz, meaning the signal can be clearly heard against lower frequency background noise. The bell of the hazardous area sounder can also be activated with the presence of a telephone ringing signal in the dRGW 21 version.
The protection of this product is a mixture of Exd “flameproof” for the driver system and Exe “increased safety” for the termination chamber. The MEDC dRGW 21 offers initiation by a relay from a telephone ringing voltage.
The flameproof chamber contains the electromagnetic driver system and the enclosure is made from GRP (glass-fibre reinforced polyester), guaranteeing protection against corrosion. As the dGW 21 is safety class II, so there is no equipotential bonding necessary.
All D.C. versions are also equipped with an electronic contact breaker, increasing product service life.
ATEX Sounders Zone 1 & Zone 2
- ATEX II 2 G Ex de IIC T6
- Housing made of glass-fibre reinforced polyester (GRP)
- Volume: approx: 105 dB(A)
- Protection: IP 66
- Safety class II
(no equipotential bonding necessary)
- Version dRGW 21 with integrated telephone call relay
- Integrated terminal box realized in Ex protection mode increased safety
MEDC Dgw 20 Hazardous Area sounders
|Explosion Protection||II 2 G Ex de IIC T6|
|Safety class||II (no equipotential bonding necessary)|
|Housing||GRP glass-fibre reinforced polyester|
|Colour||Black or red|
|Cable gland||1x M20 x 1.5 cable gland and 1 blind plug M20 x 1.5|
|Connection terminals||1.5sqmm fine wire.|
2.5sqmm single wire
|Operating conditions||Indoors and outdoors|
|Operating position||Bell dome to the front (tappet downwards)|
|Volume||Approx. 105 dB(A) at 1m distance|
|Temperature range||Operation: -20ºC to +40ºC|
Storage: -30ºC to +80ºC
|Weight||Approx. 5.5 kg|
EATON MEDC dgw 20 – ORDERING REQUIREMENTS
|Product Type||Product Description||Voltage Ue||Operating Voltage Range Ue||Current Consumption||Eaton MEDC Part Number|
|dGW 21||Ex-Signalling Bell||12 VDC||+10/-15%||0.60 A||MEDC F910 122 10*|
|dGW 21||Ex-Signalling Bell||24 VDC||+10/-15%||0.35 A||MEDC F910 242 10*|
|dGW 21||Ex-Signalling Bell||110 VAC||+10/-15%||0.14 A||MEDC F911 101 10*|
|dGW 21||Ex-Signalling Bell||110 VDC||+10/-15%||0.13 A||MEDC F911 102 10*|
|dGW 21||Ex-Signalling Bell||230 VAC||+10/-15%||0.06 A||MEDC F912 301 10*|
|dGW 21||Ex-Signalling Bell||240 VAC 60 Hz||+10/-15%||0.07 A||MEDC F912 401 1060*|
|dGW 21||Ex-Signalling Bell with telephone relay||230 VAC||+10/-15%||0.06 A||MEDC F912 301 1000*|
|dGW 21||Ex-Signalling Bell||12 VDC||+10/-15%||0.60 A||MEDC F910 122 1013*|
|dGW 21||Ex-Signalling Bell||24 VDC||+10/-15%||0.35 A||MEDC F910 242 1013*|
|dGW 21||Ex-Signalling Bell||110 VAC||+10/-15%||0.14 A||MEDC F911 101 1013*|
|dGW 21||Ex-Signalling Bell||110 VDC||+10/-15%||0.13 A||MEDC F911 102 1013*|
|dGW 21||Ex-Signalling Bell||230 VAC||+10/-15%||0.06 A||MEDC F912 301 1013*|
*All part numbers are ATEX variants
Eaton MEDC have developed ATEX products designed for harsh and hazardous area conditions and where there is a risk of explosion due to the presence of flammable atmospheres both onshore and offshore – since 1975 MEDC have been designers and manufacturers of alarm, signal, control and communications equipment. T&D distribute the extensive range of Eaton MEDC ATEX Certified manual call points, visual, audible alarms, loudspeakers and telephones for hazardous area workplaces, including Zone 1 & Zone 2 explosive atmospheres.
Thorne & Derrick, are the Explosive Atmosphere Experts, distributing an extensive range of ATEX Certified Equipment including heat tracing cables and systems, electrical heating products, electrical enclosures and plug/sockets outlets.
Complete range of LV-HV Cable Joints, Terminations, Cleats & Glands are available to support installation of power, control and instrumentation cables up to 33kV – includes Cold Shrink for use in hazardous areas to provide electrical insulation and cable protection.