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DB7 Intrinsically Safe Sounder

DB7 Intrinsically Safe Sounder

Product catalog summary

Overview: The DB-7 is an intrinsically safe multitone sounder designed for industrial environments with high ambient noise levels. It offers up to 110dBA output and can be linked with DA135 beacons for combined audible and visual warnings. The sounder is compact and efficient, suitable for gas groups IIB and IIC, and features selectable dual tones.

Specifications: The DB-7 is ATEX certified (Ex II 1G EEx ia IIC T4) and provides greater than 107dBA output with 26 user-selectable tones. It has an IP66 weatherproof rating and is constructed from corrosion-resistant red glass-reinforced polyester. The sounder operates on 12 or 24VDC with a current range of 34-68mA at 24V and 25-55mA at 12V.

Technical Details: The sounder is certified to EN50014:1997, EN50020:1994, and EN50284:1999 standards. It is suitable for Zones 0, 1, or 2, with a temperature class up to T4. Safety parameters include Ui = 28V for the 24V version and Ui = 15.7V for the 12V version. Recommended interfaces include Zener Barriers (S951 for 24V, S931 for 12V) and IS Isolators (WIS1211 for 24V).

Environmental Conditions: The DB-7 operates in temperatures ranging from -55 to 70ºC and can be stored at temperatures up to 80ºC. It supports humidity levels from 0-95% RH, non-condensing.

Installation and Compliance: The sounder features a deep base with extra terminals for convenient circuit looping and end-of-line resistor placement. It complies with EMC standards EN61000-6-2:2001 for immunity and EN61000-6-4:2001 for emissions. The unit weighs 1.0kg and includes three entries for cable glands.

Tone Options: The DB-7 offers 26 tones, including alternating, sweeping, continuous, and intermittent sounds, with sound levels ranging from 89 to 107 dBA. Tones comply with UKOOA/PFEER guidelines.

Approvals: The sounder is approved by Baseefa for Europe and holds Gost ‘R’ Certification for Russia, ensuring compliance with relevant safety standards.

Catalog excerpts

EEx ia IIC T4 Greater than 107dBA output 26 user-selectable tones IP66 weatherproof ratingSecond tone switched by reversing supply polarity Tones comply to UKOOA/PFEER guidelines Corrosion-resistant red glass- reinforced polyester >

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Supply 12 or 24VDC 20%, depending on model, current 34-68mA @ 24V, 25-55mA @ 12V Recommended Interfaces Zener Barriers: S951 (24V version), S931 (12V version) IS Isolators: WIS1211 (24V version) Recommended Cable 0.5 to 2.5mm Construction UV stable glass reinforced polyester with stainless steel retaining screws. Colour і red Connections Eight terminals suitable for cable up to 2.5mm > Certification Location ATEX certified to EN50014:1997, EN50020:1994 and EN50284:1999 Group II, Category 1G, EEx ia IIC or IIB T4 (Ta 55ֺC to +70C) Zones 0, 1 or 2. Gas Group, IIC (or IIBdepending on model) or IIA,...

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DB7 Intrinsically Safe Sounder

DB7 Intrinsically Safe Sounder

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