See in our August issue details of the European intruder alarm standard that comes into force – in the UK – in October.
Meanwhile Honeywell has launched the DT7550C Dual Technology Sensors that offer full compliance with the requirements of PD6662/EN50131-1:2004, the manufacturing firm reports.
The DT-7550C sensor provides, it is claimed, superior protection for Grade 3 security installations up to its maximum range of 15m x 18m and in applications where masking is a concern. Honeywell’s patented MaskAlert technology detects intentional as well as accidental masks or blocks, the makers reports. Through a combination of passive infra-red (PIR) and microwave signal processing, MaskAlert instantly detects the presence of masking materials and sends a warning to the control panel. Power-up Anti-mask feature detects mask conditions at start-up, reducing the risk of sensor security breaches during installation, servicing, and power outages. Whenever mask conditions are encountered, the sensor sends a trouble signal via a separate trouble relay. When connected to a Galaxy 3 series control panel a single zone indicates both alarm and mask conditions, removing the need for additional zone expansion modules, it is claimed.
Honeywell’s DualCore signal processing analyses PIR and microwave signals through the DT-7550C’s micro-controller. DualCore processing supports functions including: Concurrent Diagnostics, Digital Fluorescent Light Interference Filter, Digital Adaptive Microwave Threshold, adaptive baselines, and Bi-Directional Temperature Compensation.
The DT-7550C sensor uses K-band microwave technology to deliver reliable detection without holes or weak spots, it is claimed. The custom-made source offers Pattern Shaping to fill the protected area with a broad, balloon-shaped pattern which matches the PIR pattern. It also offers Pattern Containment to reduce the penetration of microwave energy through walls, the makers add.
