DB4扬声器上海美盛自动化设备有限公司

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产品名称：DB4扬声器
产品型号：DB4扬声器
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简单介绍

DB4扬声器 DB4扬声器供潜在爆炸性气体和尘埃的环境中使用,25 瓦的额定功率和是适用于所有燃气集类别包括氢。Flamepaths，flare、壳体，是完全由紫外线稳定玻璃纤维增强聚酯生产的。不锈钢螺钉和烧结矿防止设备被腐蚀

产品描述

DB4扬声器
DB4扬声器供潜在爆炸性气体和尘埃的环境中使用,25 瓦的额定功率和是适用于所有燃气集类别包括氢。Flamepaths，flare、壳体，是完全由紫外线稳定玻璃纤维增强聚酯生产的。不锈钢螺钉和烧结矿防止设备被腐蚀

DB4 explosionproof horn loudspeaker for hazardous areas

DB4 explosionproof horn loudspeaker for hazardous areas

This range of loudspeakers, intended for use in potentially explosive gas and dust atmospheres, has a power rating of up to 25 watts and is suitable for use in all gas groups including hydrogen.

The flamepaths, flare and the body, are manufactured completely from a UV stable glass reinforced polyester. Stainless steel screws and sinter are incorporated thus ensuring a corrosion free product. A tapered flamepath is used to overcome the problems of assembly of parallel spigot flamepaths.

An optional Exe terminal chamber is available.

An uncertified version is available for use in non-explosive atmospheres.

Models compliant to BS 5839, part 8 are available.

Download DB4 datasheet

Download DB4 North American datasheet

Features

Zone 1, Zone 2 & non-Ex use.
UL listed for USA and Canada:
- Class I, Div 2, Groups A-D.
- Class I, Zones 1 & 2, AExd IIC, T4.
Exd IIC T4/T5.
ATEX approved, Ex II 2GD.
BASEEFA certified.
GOST ‘R’ & ‘K’ certified.
Australian (SAA) certified.
Brazilian (Inmetro) certified.
Optional Exe terminal chamber.
IP66, IP67, NEMA 4x & 6.
Certified temperature:
- –55°C to +70°C*.
- –67°F to +158°F*.
GRP corrosion-free flamepaths.
119dBA at 25 watts at 1 metre.
8, 15, 20 and 25 watt versions.
BS 5839, part 8 compliant versions available.
Addressable capability.
Power tappings, via integral transformer.
Ratcheted swivel bracket.
Stainless steel sinter.
Stainless steel mounting bracket.
Tapered flamepath.
Line and 8Ω versions available.

*Depending on version.

Certification	ATEX, UL, GOST R & K, Inmetro
Flameproof	ATEX Ex II 2GD, Exd(e) IIC T4/T5
Ambient Operating Temperature	-55°C to +70°C (low temp unit) -20°C to +70°C (standard)
Ingress Protection	IP66 & IP67
Material	Corrosion-free GRP
Output	107 dBA at 1W at 1 metre
	119 dBA at 25W at 1 metre
Entries	Up to 2 x 20mm
Weight	5kg
Tappings	25, 12.5, 6, 4, 2, 1
Options	Power (8W, 15W, 20W, 25W), body colour,
	Tag & duty labels, certification,
	BS5839, part 8 compliance,
	Terminal chamber, transformer voltage

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DB4扬声器

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