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…
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 Eaton 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 +85ºC in ATEX & IECEx Zone 1 and Zone 2 hazardous areas with SIL 1 rating.
This high temperature rating is unprecedented in an Ex sounder. The highest rated ex certified sounder on the market. The benefit of using a high temperature GRP sounder is that it’s lightweight. The DB3B weighs just 4.6kg, which is around 25% lighter than a stainless-steel sounder.
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 DB3B is a highly flexible and customisable product with a huge number of user selectable options.
The SIL 1 Rated 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.
Contact our team 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.
The MEDC DB3B hazardous area sounder is available in a choice of variants with Ex d and UL approvals.
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.
VIDEO: Eaton’s Crouse-Hinds series MEDC DB3B is a high-power explosion proof sounder which is provided with versatile control options allowing compatibility with a wide range of control methods and PLCs.
*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.
The following code is designed to help in selection of the correct Eaton hazardous area sounders with ATEX approval and certification.
EATON MEDC
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.
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.
Cable Cleats | Cable Lugs | Cable Transits | Cable Joints
| Category | ATEX Sounders & Beacons |
|---|
| 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 +ve supplies | 2 x DIP switches | |||
| *Common +ve with 2 -ve supplies | 2 x DIP switches | |||
| 3 | Common -ve with 3 +ve supplies | 3 x DIP switches | ||
| Alternative tone activation (Option M) | 2 | *Common -ve with 2 +ve supplies | 2 x DIP switches | |
| 3 | Common +ve with 3 -ve supplies | 3 x DIP switches | ||
| Alternative tone activation (remote) (Option R) | 1-5 | Volt free activation (remote switching) | 1 x DIP switch for stage 1. Tone preselected for subsequent stages | |
| AC | Standrad | 1 | Apply power | 1 x DIP switch |
| Alternative tone activation (remote) (Option R) | 1-2 | Volt free activation (remote switching) | 1 x DIP switch for stage 1. Tone preselected for the 2nd stage |
| Voltage | Current for IIC unit | Current for IIIC unit |
| 12Vdc | 700mA | 716mA |
| 24Vdc | 329mA | 339mA |
| 48Vdc | 171mA | 173mA |
| 110Vac | 115mA | 122mA |
| 120Vac | 106mA | 113mA |
| 220Vac | 59mA | 63mA |
| 230Vac | 52mA | 55mA |
| 240Vac | 55mA | 58mA |
| 254Vac | 59mA | 63mA |
| 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 |
| Specifications | |
| 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 to 26Vdc |
| 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 |
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