10
October 2010
AUTOMATIKPRODUKTER
AUTOMATIKPRODUKTER
ATEX – Duct Smoke Detector
Smoke switch ORS 221 Ex
Functional principle
Scattered light
Response threshold
According to the construction and testing princi-
ples for tripping devices for smoke (12/76)
Degree of protection
IP 40
Ambient temperature during operation
–20 °C to +70 °C
Weight
120 g
Additional output
Terminal 3 (for communication only)
IBExU certificate number
ORS 221 Ex
IBExU04ATEX1106
Terminal cross section in ORS 142 Ex
Max. 1.5 mm²
interface (connection box)
Note:
The ORS142 Ex interface (connection box) is prewired with the base of the
optical smoke switch ORS 221 Ex at the factory. This wiring must not be
changed!
Note:
The ORS 221 Ex is automatically reset as soon as the sensing chamber is free
of smoke. For alarm storage, the power supply unit or the connection box of
the hold-open system FAD 01/FAK 01 can be equipped with a signalling and
display control element SAB 04.