Linear Optoelectronic Beam Smoke Detectors RK70B TECHNICAL INFORMATION The RK70R is a linear beam optical smoke detector that bases its working on the relation between the smoke present in a room, caused by the beginning of a fire, and the infrared beam emitted by the device and reflected by a special optical reflector. The RK70R is also able to detect the presence of vapour and fog. A fundamental feature of this detector is the ability to detect the presence of white smoke and black smoke too if it's not very dense. This detector is exspecially suitable for applications where the aesthetics element, the small dimensions, the possibility of remote control and the simplicity of use have a primary importance. The most important types of environments where the RK70R is usually installed are museums, churches, offices, hotels etc. FEATURES • • • • • • • • • • protected area: up to 1050 square meters electronics: solid state infrared modulated beam infrared source: solid state diode unsensibility to daylight built in infrared filter control of the sensibility: internal or remote easy alignment unsensible to the temporary crossing of a opaque body high sensitivity to white smoke and black smoke too (low density) • summing effect on the beam's path • automatic reset TECHNICAL ADVANTAGES • a single detector covers a 900 s.m. area • the installation is very easy and quick • it give out an analog voltage output that permits to remotely visualize the signal level using a suitable accessory (EV570) • a special internal circuit permits the remote regulation of the detector sensibility (over 1 km far) using the EV570 accessory • it has two thresholds one for the alarm and one for the prealarm • it detects automatically when maintenance is required • maintenance is easy and cheap • low cost APPLICATIONS • • • • • museums churches libraries hotels shops and malls • • • • • cinemas computer rooms control rooms storehouses and many others EDS - V. Ca' Nova Zampieri 6 - 37057 S. G. Lupatoto(VERONA) ITALY - Tel. +39 045547529 - Fax +39 0458750065 - Email:[email protected] - Web: www.eds.eu TECHNICAL DATA DETECTOR’S OPERATION The RK70B detector is made up of a plastic box consisting of a base, that has to be mounted on the wall, and a cover trasparent to the infrared radiation. The device includes a transmitter element and a receiver element. The transmitter emits a powerful infrared beam generated by a special diode solid state with extremely life lunga.Il emitted beam hits the receiver placed on the opposta.Il receiver, composed by an infrared sensor with associated electronics, converts the incident radiation • • • • • • • • • • • into a signal electric. The method of operation on the RK70B is based on the principle of obscuration. The transmitter (TX) has to be installed at one end of the area to be protected just under the level of the ceiling and the RX must be installed • • • • • at the other end. When a fire begins, it produces smoke that goes up and intercepts the infrared beam. This smoke • • causes a change in electrical state (voltage) in the smoke detector that activates the alarm output relay right after the threshold level is reached. The output signal of the detector can be controlled and monitored using a suitable alarm system. • • • • • • power supply: 12 Vcc or 24 Vcc (+15 - 10%) current: 10 mA receiver - 4mA transmitter protection against the inversion of polarity infrared source: solid state infrared emitting diode silicon solid state detector internal infrared filter internal screen for the optical collimation optical path. 70m optical positioning ±10° in all the directions internal trimmer for the regulation of the sensitivity trimmer for the regulation of the prealarm trigger threshold internal special circuit for remote sensitivity control output analog signal 0-10V output delay of the alarm relay: 5 sec. led for prealarm and alarm indication prealarm output: Open Collector (transistor NPN) 50mA max output alarm relay: 1A/24 Vcc output terminal block with the possibility of the remote transmission of all the electrical information plastic box (red or black base - black cover) Ministerial Approval: N° 3503/295 Accordance with Pr EN54-12 (2001) execution: IP 50 (IEC 529-144) dimensions: 162x62x63 mm weight: 250 gr.
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