MEDC DB3B | Hazardous Area Sounder | ATEX Sounders Zone 1 & Zone 2 Weatherproof Ex de
MEDC DB3B | ATEX SOUNDERS
ZONE 1 & ZONE 2 HAZARDOUS AREAS
MEDC DB3B are part of range of lightweight, flameproof ATEX sounders that have been designed with a high weatherproof rating to cope with the harsh environmental conditions found offshore and onshore in the oil, gas and petrochemical industries – in ATEX & IECEx Zone 1 and Zone 2 hazardous areas.
The new MEDC DB3B is a high power ATEX sounder with improved functionality and performance – certified for use in a wide range of temperatures from -55ºC to +70ºC in ATEX & IECEx Zone 1 and Zone 2 hazardous areas.
The Ex enclosure is manufactured from UV stable GRP with a rugged thermoplastic flare providing a corrosion free product. Capable of producing 122dB @ 1m and with a range of pre-recorded tones, the Eaton MEDC DB3B includes an integral volume control which is ideal when a lower output is required.
The ATEX sounder is provided with versatile control options allowing compatibility with a wide range of control methods and PLCs. The standard DC unit provides 3 tone stages, each stage has 28 tones available which can be independently selected. The hazardous area sounder can be controlled by reversing the polarity of the power supply (2 stage) or providing a common negative and switching between multiple positive supplies.
The ATEX sounder proves its versatility by additionally being able to work with a common positive supply and switching the negatives. The tone stages of the DB3B can also be controlled via voltage free contacts provided by a control panel.
The flexibility of the range continues with a wide range of supply voltages. The short flare option is worthy addition to the range offering a high SPL in a compact unit.
A wide range of hazardous area sounders are available to order from Thorne & Derrick, to suit individual requirements and applications.
Contact Thorne & Derrick for great customer service, competitive quotations and availability from stock for the MEDC range of sounders, including MEDC DB3B, for safe use in hazardous areas with Explosive Atmospheres.
MEDC DB3B | EX d SOUNDER
The MEDC DB3B hazardous area sounder is available in a choice of variants with Ex d and UL approvals.
- DB3B (Ex d)
- DB3BW (weatherproof only)
- DB3BUL (UL)
- DB3BUW (ordinary locations)
The MEDC range of sounders and beacons from the Crouse Hinds series of Signalling & Alarms – a comprehensive range of Explosion Proof call points are also available with ATEX & IECEx certification and explosion protection to both Ex d (flameproof) and Ex ia (Intrinsically Safe) applications.
ATEX Sounders Zone 1 & Zone 2
- Ex d / Ex de IIC/IIIC T4/T5/T6.
- ATEX certified.
- IECEx certified.
- INMETRO certified
- TR CU certified
- CCCF certified
- CCOE certified
- SIL1 certified
- cULus certified
- Certified temperature -55ºC to +70ºC.*
- IP66 & IP67 Ingress Protection
- Optional Ex e terminal chamber.
- Up to 122dB output @ 1m.
- Integral volume control.
- 28 tones, user selectable.
- 3 stage unit remotely switchable.
- Tones can be programmed to customer’s specification.
- DC supply voltage between 12V and 48V.
- End of line resistor option.
- ATEX Sounder & beacon combination units available,
- for further details contact MEDC.
- Ex enclosure – Glass reinforced polyester.
- Flare – High impact thermoplastic polyester.
- Stainless Steel mounting bracket and cover screws.
- Mounting bracket has ratchet facility as standard.
- Optional swivel bracket available
Eaton MEDC DB3B
Tone activation and selection
|Voltage||Unit||No of Stages||Tone Activation||Tone Selection|
|DC||Standard||1||Apply Power||1 x DIP switch|
|2||Reverse polarity||2 x DIP switches|
|Common -ve with 2
|2 x DIP switches|
|*Common +ve with 2
|2 x DIP switches|
|3||Common -ve with 3
|3 x DIP switches|
|Alternative tone activation (Option M)||2||*Common -ve with 2
|2 x DIP switches|
|3||Common +ve with 3
|3 x DIP switches|
|1-5||Volt free activation
|1 x DIP switch
for stage 1. Tone
|AC||Standrad||1||Apply power||1 x DIP switch|
|1-2||Volt free activation
|1 x DIP switch
for stage 1. Tone
preselected for the
*Reverse polarity line monitoring can be used with common positive or negative switching to give up to 2 operational stages and a 3rd monitoring connection.
An EOL resistor can be fitted as shown in the technical manual. All connection details are shown in the technical manual.
Based on a continuous 970Hz tone
|Voltage||Current for IIC unit||Current for IIIC unit|
MEDC DB3B Hazardous Area sounders
Should you require any further information to enable the selection or specification of explosion proof status lights, for use in potentially explosive atmospheres, please contact us.
|Hazardous Area Certification|
|ATEX Ex d Gas||Cert. no. Baseefa13ATEX0229X. Certified to: EN60079-0,1
Ex II 2G, Ex d IIC T4/T5/T6 Gb
|ATEX Ex d Gas & Dust||Cert. no. Baseefa13ATEX0231X. Certified to: EN60079-0,1,31
Ex II 2GD, Ex d IIC T4/T5/T6 Gb, Ex tb IIIC T135°C/T100°C/T85°C Db, IP66
|ATEX Ex de Gas||Cert. no. Baseefa13ATEX0232X. Certified to: EN60079-0,1,7
Ex II 2G, Ex de IIC T4/T5/T6 Gb
|ATEX Ex de Gas & Dust||Cert. no. Baseefa13ATEX0233X. Certified to: EN60079-0,1,7,31
Ex II 2GD, Ex de IIC T4/T5/T6 Gb, Ex tb IIIC T135°C/T100°C/T85°C Db, IP66
|IECEx Ex d Gas||Cert. no. IECEx BAS 13.0112X. Certified to: IEC60079-0,1
Ex d IIC T4/T5/T6 Gb
|IECEx Ex d Gas & Dust||Cert. no. IECEx BAS 13.0113X. Certified to: IEC60079-0,1,31
Ex d IIC T4/T5/T6 Gb, Ex tb IIIC T135°C/T100°C/T85°C Db, IP66
|IECEx Ex de Gas||Cert. no. IECEx BAS 13.0114X. Certified to: IEC60079-0,1,7
Ex de IIC T4/T5/T6 Gb
|IECEx Ex de Gas & Dust||Cert. no. IECEx BAS 13.0115X. Certified to: EN60079-0,1,7,31
Ex de IIC T4/T5/T6 Gb, Ex tb IIIC T135°C/T100°C/T85°C Db, IP66
|UL Haz Locs||UL certified for USA and Canada, fire alarm or general use, listing no. E203310
Class I, Div 2. Groups A-D. Class I, Zone 1, Ex d IIC / AEx d IIC Gb
Class II, Div 2. Groups F&G. Zone 21 AEx tb IIIC
Class III Div 1
|UL Ord Locs||UL certified for USA and Canada, fire alarm or general use, listing no. S8116|
|TR CU Ex d Gas||1Ex d IIC T4/T5/T6 Gb|
|TR CU Ex d Gas & Dust||1Ex d IIC T4/T5/T6 Gb, Ex tb IIIC T135°C/T100°C/T85°C Db|
|TR CU Ex de Gas||1Ex de IIC T4/T5/T6 Gb|
|TR CU Ex de Gas & Dust||1Ex de IIC T4/T5/T6 Gb, Ex tb IIIC T135°C/T100°C/T85°C Db|
|Russian Fire Approval||All TR CU certified units are Russian Fire Approved|
|CQST Ex d Gas||are Russian Fire Approved
CQST Ex d Gas Ex d IIC T4/T5/T6 Gb
|CQST Ex d Gas & Dust||Ex d IIC T4/T5/T6 Gb, Ex tb IIIC T135°C/T100°C/T85°C Db|
|CCCF||Chinese Compulsory Certification for Fire systems (CCCF) Ex d only|
|INMETRO Ex d Gas||Ex d IIC T4/T5/T6 Gb|
|INMETRO Ex d Gas and Dust||Ex d IIC T4/T5/T6 Gb, Ex tb IIIC T135°C/T100°C/T85°C Db, IP66|
|INMETRO Ex de Gas||Ex de IIC T4/T5/T6 Gb|
|INMETRO Ex de Gas and Dust||Ex de IIC T4/T5/T6 Gb, Ex tb IIIC T135°C/T100°C/T85°C Db IP66|
|SIL||SIL 1 certified to IEC61508. Cert number 20151119-4786827453|
|Material||Ex enclosure – flame retardant, UV stable, glass reinforced polyester
Flare – flame retardant, high impact, UV stable, thermoplastic polyester
(UV stability tested to ISO 4892 part 3)
Hardware – bracket, fixings and captive cover screws in 316 stainless steel
|Fire retardancy||Body – glass reinforced polyester. V0 flammability rating
Outer flare – thermoplastic polyester. V0 flammability rating
|Finish||Body – natural black. Flare – natural black, natural red or painted as specified (black
short flare painted black)
|Voltage||DC: 12 – 48V AC: Up to 254V. If using an EOL resistor with a value between 700Ω
and 2KΩ the maximum voltage must be limited to 28.8Vdc, if using an EOL resistor
with a value between 470Ω and 700Ω the maximum voltage should be limited
|Weight||Ex d/UL – 4.6kg, Ex de – 5.4kg. Based on long flare DC unit|
|Ingress protection||IP66 & IP67, NEMA 4X & 6. (IPx7 & NEMA 6 on terminal chamber only|
|Earth Continuity||Optional for Ex de version. Not available on Ex d unit|
|Entries||Up to 2 x M20 or 1/2” NPT. Blanking plug available|
|Terminals||AC: 7 x 2.5sqmm (4 for loop in/out power, 3 for tone selection) (standard unit only)
DC: 8 x 2.5sqmmm (8 for loop in/ out power and tone selection) (standard unit only
|Mounting arrangement||Stainless steel bracket with ratchet facility, optional swivel bracket available|
|Labels||Optional duty and tag labels available|
|Tone information||28 tones per stage. Additional custom tones available (contact MEDC)
Suitable for use with 200Hz tones
EATON MEDC db3B – ORDERING REQUIREMENTS
The following code is designed to help in selection of the correct Eaton hazardous area sounders with ATEX approval and certification. Build up the part number by inserting the code for each component into the appropriate box – contact our sales team for support and advice covering an extensive range of standard and innovative ATEX & IECEx equipment for use in explosive atmospheres.
Eaton MEDC have developed ATEX products, including ATEX Beacons, designed for harsh and hazardous area conditions and where there is a risk of explosion due to the presence of flammable gas and dust 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 products – this includes 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.