EP 212-141

EP 212-141
EP 212-141
Electrooptical smoke detectors EP 212-141 is designed to detect fire accompanied with low concentration smoke in enclosed rooms of various buildings and facilities. Detector power supply and "Fire" signal transmission is provided via double-wire alarm loop and is accompanied with optical indicator activation at detector tripping. The detector does not respond to temperature, humidity changes and to the presence of flame and natural or artificial light.
Detector power supply 10 to 30 V
Current consumption in standby mode no more than 45μA
The detector sensitivity is in line with the ambient smoke content attenuating light flux within 0.05 to 0.2 dB/m
Activation delay no more than 9 sec
Detector resistance in "Fire" mode, no more than 1 kOhm
Frequency of LED flashing:
in stand-by mode
in "Fire" mode

1 per 5 sec.
steady on
The detector remains functional when affected by
air flow rate
background luminance

up to 10 m/s
up to 12000 lx
Noise resistance (as per GOST R 53325): 4 degree
Ingress protection rating IP 30
Overall dimensions Ø94х46 mm
Detector weight 210 g
Operating temperature range from -45 to +55 °C
Average service life at least 10 years
The detector is intended for round-the-clock and uninterrupted operation with control and indicating devices ensuring supply voltage in the alarm loop within the range of 9 to 30V, which accept "Fire" signal as steplike decrease of the detector internal resistance in normal polarity up to the value of 1000 Ohm, such as Granit, Grand Magistr, VERS PK, Signal-20, Signal-20P, etc.

The detector performs the following functions:
  • smoke concentration measurement;
  • computer-aided processing of the measurement results based on special algorithms and making a decision on generation of the "Fire" signal;
  • internal resistance reduce in "Fire" mode to 1 kOhm;
  • functioning test using special device;
  • Operating modes LEDs.

"Fire" signal remains active when smoke exposure to the detector stops. Reset is performed using receiving and control device by detector power switching off at least 2 sec.
Connection of the detector and the socket is of plug-type. Circular contacts allow mounting of the detector without orientation with respect to the socket. Socket is unified, and any Rubezh detector may be installed without the need of reinstallation. Minus wire of AL is connected to short-circuited by the detector contacts 3 and 4. This provides "AL failure" signal sending to FACIE when the detector is disconnected.
The detector may be installed on suspended ceiling using special socket with mounting ring.
Screw-free mounting method using clamp-button ensures reliable contact and easy installation.
In case of detector connection to AL of receiving and control device with activated detectors quantity determination function (double-trip function), auxiliary resistor Raux shall be used. Auxiliary resistor rating depends on receiving and control device connected and shall be designed using device circuit loop resistance in "Fire" and "Warning" mode as an input data. Instead of auxiliary resistor, compatibilizer US-01 may be used. It shall be plugged into detector's socket and have resistor (rating to be determined at ordering) and terminal block.

Detector may operate with four-wire connection devices. For this purpose, US-02 compatibilizer shall be used. This compatibilizer shall be mounted within detector's standard socket.

Detector provides connection with remote optical signaling device (ROSD).

When double tripping is not required, auxiliary resistor Raux shall not be installed. In this case, to prevent from detector failure, receiving and control device shall have 20 mA current limiting function in "Fire" mode.
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