LST specifications IS Optical Smoke Detector AOEX-55000-640, Specifications, ATEX certified

Devices for Hazardous Areas

for the Apollo/Discovery Loop

•ADM loop technology with Apollo/Discovery protocol

•Optical smoke detector

•Thermal detector

•Safety barrier with galvanic isolation

•Protocol interface for communication with the fire detection control panel

•ATEX certified

IS Optical Smoke Detector AOEX-55000-640

fi g. A

fi g. C

fi g. B

fi g. D

The addressable Intrinsically Safe Optical Smoke De- tector AOEX-55000-640 (fi g. A) uses the scattered light principle and was developed for the detection of smo- ke particles in hazardous areas. The smoke detector must always be connected via a safety barrier, which has been approved for this detector, and a protocol interface. Furthermore, the relevant country specifi c regulations always have to be observed.

The proven ADM loop technology with Apollo/Discovery protocol establishes a permanent communication be- tween the fi re detection control panel and the detector. That ensures a periodical function testing of the detec- tor. In the control panel all types of fi res are detected by continuously comparing fi re patterns.

Intelligent evaluation algorithms use the current condi-

tion of the sensing chamber to predict the likely time of the next maintenance. Thus the alarm threshold is automatically adjusted within the permissible range, de- pending on the contamination. With that, the constant response sensitivity of the detector is ensured for a long time.

The two LEDs with 360° visibility indicate the activated condition of the detector. The detector address is se- lected by means of a code card in the detector base. Therefore the detector can be changed without additi- onal tools.

The detector is inserted into the IS Detector Base ASEX- 45681-215 (not illustrated) and it can be protected against theft.

Specifications

Ignition protection	intrinsically safe
Ex classifi cation	EEx ia IIC T5
Operating voltage	Supply through loop voltage
Current consumption	typ. 340µA (quiescent)
Ambient temperature	-20°C to +40°C (no condensation or icing)
Relative humidity	0 – 95% (no condensation)
Dimensions ø × H	100 × 42 (mm)
Colour	white
Weight	100g

Building Safety. Building Security.

A

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