Loop powered Intelligent AUTO-ALIGNING Reflective Beam Detector – 8-50m, VDS Approved

The Loop powered Intelligent AUTO-ALIGNING Reflective Beam Detector – 8-50m, VDS Approved is part of the Analogue Addressable Beam Detectors range from Context Plus, supplied and supported by SPS. 1 x detector head, 1 x system controller and 1 x reflective prism. Suitable for operation up to 50m- VDS Approved The Intelligent Addressable Auto-Aligning Beam Detector of Context Plus combines a transmitter/receiver in the same detector head with an automatic alignment motor. This combination with integrated addressability allows for quick and simple installation.

Specifications & features

• The Intelligent Auto-Aligning Beam Detector automatically compensates for environmental effects on the beam signal, keeping the unit in the best possible working order.
• This is achieved through the combination of software (automatic gain control) and motorised realignment of the beam.
• It comprises a ground level loop-powered controller and a detector head.
• A built-in laser provides rapid initial alignment and thereafter the detector head will continuously automatically align and compensate for any building movement.
• The status of each detector can be monitored through the controller which is sited at ground level.
• The detector head operates both as a transmitter and a receiver.
• A well-defined IR beam is projected to a prism mounted on the opposite wall, which is reflected back to the receiver.
• In the event of smoke partially obscuring the light an imbalance between the transmitted and received light will occur.
• The detector will then transmit an alarm value to the control panel.
• The detector is factory set to a beam obscuration of 35% which is the best setting for most factories and warehouses.
• The setting can be changed to 25% for offices and clean areas such as theatres or to 50% for hostile areas such as mills or foundries.
• The detector reports a pre-alarm (analogue value 48) at approximately 75% of the alarm threshold.
• The detector compensates automatically for gradual contamination of the lenses in order to avoid false alarms.
• The detector is non-latching and resets 30 seconds after an alarm event ceases and in 3 seconds after the removal of a fault.
• Loop-powered, requires no external power supply.
• Draws 10mA or less in quiescent and 36mA in alignment mode from the analogue addressable loop.
• It is recommended that no more than ten beam detectors be powered from each loop.
• Built in 20T negative bi-directional short circuit isolator.
• Operating range of 8m-50m with a single prism.
• The operating range of each detector head can be increased up to 100m by using the Extension Kit comprising 3 additional prisms.
• Compact Optical Beam Detector for detecting smoke in large open areas such as warehouses, theatres, churches, mosques and sports centres.
• Incorporates a bi directional short-circuit isolator.
• Automatic drift compensation.
• Automatic reset Ground level Controller.
• Automatic alignment compensation for building movement.