LOUDSPEAKER AMPLIFIED 24VDC ETH20MD_LOUD24

Description

The explosion-proof ETH20MD LOUD24 series voice alarms have been designed for use in potentially explosive atmospheres in the presence of gas and dust. They have a high degree of protection (IP66) to cope with the difficult environmental conditions found on off-shore and on-shore plants. They are equipped with a Class D audio amplifier powered at 24VDC, for communication to the public and for connection to alarm systems. The acoustic compression chamber is separated from the environment by a special sinter filter.
Possibility and select the sound level based on the real needs of the installation site. (4 power steps).

II2GD Exdb IIB+H2 T6/T5 Gb – Ex tb IIIC Db IP66
OR
II2GD Exdb IIC T6/T5 Gb – Ex tb IIIC Db IP66

Class D audio amplifier
Input signal: 0dB at 600 ohms
Input sensitivity: 40mV / 150Kohm
Power supply: from 24Vdc to 48Vdc
Absorption at maximum power: 0.8A @ ​​48V – 1.2A @ 24Vdc
Piloting: 8ohm loudspeakers
Output power: 30W
Total harmonic distortion + noise: (f = 1KHz, PO = 20W) 0.2%
Signal to noise ratio: (f = 1Khz, Gain = 20dB) 102dB
Power regulation: adjustable with trimmer from zero to maximum power of the set step
Power Step: 4 Power steps are available, selectable by SW1 dip-switch
Step1 (gain 20db) = 1.57W Step2 (gain 26db) = 5.4W
Step3 (gain 32db) = 21.5W Step4 (gain 36db) = 30.4W
Frequency response: from 20Hz to 20Khz