PSR-N signalling device

Programmable Non-Intrinsically Safe Emergency Signaling Device PSR-N

Application

Programmable non-intrinsically safe emergency signaling devices PSR-N are used to announce alarm signals as well as verbal and acoustic messages sent over the intrinsically safe telephone line or previously recorded and stored in the inside memory, and for listening watch of the signaling device surrounding. They also enable to call the dispatcher by the use of buttons ALARM and DYSP, in the alarm and regular modes. The switching of functions of broadcasting and listening enables to carry out a simplex conversation with persons who are in close vicinity of the signaling device. Moreover, the signaling devices enable the remote control - over the intrinsically safe telephone line - over two output circuits and receiving information on the condition of devices which may be connected to two two-stage inputs. They have been designed to operate in manufacturing rooms of plant facilities, warehouses and other facilities which are not in danger or gas explosion. They may be applied in the public utility facilities in order to warn about incoming threats and sending evacuation signals.

Cooperation
With any automatic telephone exchange with tone dialing (DTMF).

Power supply
Central or local from feeders of the voltage from 15 to 24V DC and current capacity minimum 50mA.

 

Technical data
Telephone line input resistance:
maximum 600Ω
Telephone line input impedance for 1000Hz:
600W ± 25%
Nominal signal level:
0dBm
Dialing:
tone - DTMF
Permissible voltage at the two-stage output:
maximum 24V
Permissible current of the two-stage output:
maximum 200mA
Permissible foreign voltage between any two-stage inputs
maximum 60V
Voltage at Lza, Lzb input:
16 - 26V
Supply of conversation units:
central from subscribers equipment
Supply of calling unit::
from battery 07Ah/12V
Loudness of signal sounding (from 1m distance):
minimum 96dB
Minimum operation time at messages Broadcasting:
2h
Subscriber's connection attenuation:
maximum 12dB
Permissible surrounding noise level:
maximum 80dB
Dimensions:
180x520x100mm
Weight:
ca. 3.5kg
Casing protection degree:
IP65
Operating temperatures range:
from -40° C to +40° C