Détecteur optique adressable View larger

Addressable optical detector

DOD-220-Av

New product

  • The design of the new analog detectors of the 200 series uses the latest technological advances. Their innovative style converts the 200 range into one of the most elegant on the market and the ideal solution for installations that seek a balance between functionality and aesthetics.

    The Detnov range of detectors in the 200 series is available in 4 models: a thermovelocimetric detector (58 ºC), a thermal detector (78 ºC), an optical detector and an optical-thermal detector. All of these devices are compatible with the Detnov analog units of the CAD-150 family.

    The address of the analog detectors of the 200 series is assigned by means of the PGD-200 programmer. The use of this tool avoids any duplicate error, since the operation is performed automatically.

    The detectors and modules of the analogue system must be connected using a twisted and shielded 2 x 1.5 mm2 cable, limited to a maximum loop length of 2 km and ensuring that the loop is closed (EN-54 requirements). The necessary short circuit isolation modules must be installed to simplify the location of any faults. The maximum number of elements that the loop can support is 250.

    The operating principle of the DOD-220A detector is based on the presence of a labyrinth-type detection chamber which, thanks to its design, avoids the flow of drafts and facilitates the transport of smoke towards the sensor. The detection principle is based on the Tyndall effect: when smoke penetrates inside the optical chamber, the transmitter transmits an infrared signal to the receiver because of the reflections of this signal in the smoke, which causes the triggering the alarm state of the detector. The room is protected by a grid that prevents the entry of dirt and insects. This accessory is easy to replace when needed. This detector also incorporates algorithms to compensate for the fouling level of the chamber, which prevents the triggering of false alarms due to the dirt deposited over time and makes it possible to postpone the date of maintenance of the apparatus.

    The connection of the analog detectors of the 200 series is imperatively dependent on the presence of the Z-200 connection base. This base, provided with a locking mechanism that prevents its manipulation, can be removed only by the use of a tool.

    Thanks to the technology they use, the polarity of the detectors in this series does not matter. This specificity minimizes connection errors and saves a lot of time during installation.

    The covered protection area is 60 m2 and the maximum installation height is 12 m.

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