AR-25Ex Explosion proof horn loudspeaker

AR-25Ex Explosion proof horn loudspeaker is used to broadcast messages in explosive zones in accordance with the assigned explosion protection marking, indoors and outdoors with harsh operating conditions: when exposed to temperature and precipitation, the presence of aggressive chemical compounds and dust in the environment.

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Parameter

Value

Rated power

25* W

Rated input voltage

100 V

Effective operating frequency range

from 300 to 7000 Hz

Maximum sound pressure at 1.0 m

123 dB

Sensitivity (SPL) (at 1.0 m)

110 dB

Explosion proof marking as per GOST 31610.0-2014 (IEC 60079-0:2011)

1Ex d e mb IIB T4 Gb
Ex tb mb IIIC T135°C Db

Ambient temperature

from - 55 to + 60 ºC

Atmospheric pressure

from 84.0 to 106.7 (from 630 to 800) kPa (mmHg)

Relative humidity at +25 ± 2 °С

up to 100 %

Climatic category as per GOST 15150-69

NF1

Protection level by GOST 14254-2015 (IEC 60529:2013) (IP code)

IP66/67

Overall dimensions (with bracket), no more

354 × 259 × 270 mm

Maximum weight

3.2 kg

* The primary winding of the built-in transformer allows the following values of the rated power of the AR-25Ex: 25 W, 15 W, 6.5 W, 5 W, 2.5 W, 1.5 W.

AR-25Ex Explosion proof horn loudspeaker is used as part of communication systems in Intercom and Public Address / General Alarm systems in the metallurgical, chemical, oil refining, gas and oil industries and industries similar to them in terms of application, as well as on railways.

AR-25Ex is designed to convert electrical signals into acoustic signals and emit them into the surrounding space (air environment). AR-25Ex is used to broadcast messages in explosive zones in accordance with the explosion protection marking 1Ex d e mb IIB T4 Gb and Ex tb mb IIIC T135°C Db, indoors and outdoors with severe operating conditions: when exposed to temperature and precipitation, the presence of aggressive chemical compounds and dust in the environment.

High sound pressure level up to 123 dB;
Marking of explosion proof in a gas environment – 1Ex d e mb IIB T4 Gb;
Marking of explosion proof in a dust environment – Ex tb mb IIIC T135°C Db;
Case material is made of antistatic plastic;
Versions with one or two cable glands;
Possibility of connection to different rated powers: 25 W, 15 W, 6.5 W, 5 W, 2.5 W, 1.5 W;
High degree of protection – IP66/67;
Support a wide temperature range;
Stainless steel mounting bracket included.

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