Flexible perimeter solutions

Issue 4 2022 Perimeter Security, Alarms & Intruder Detection

Every site faces its own individual challenges when it comes to perimeter protection. According to Nico Smit, technical business development manager for Gallagher, the flexibility of Gallagher’s perimeter solutions is key to allowing sites to overcome their unique challenges, including environmental extremes, size considerations, varying intruder behaviours and site geometry.

“Gallagher’s solutions are highly configurable and offer high integrity detection with very low nuisance alarm rates, making them ideal for any site, from estates to mines, utility plants, prisons, border protection and more,” says Smit.

Gallagher’s networked perimeter solution incorporates sensors that continuously measure and report on wire tension and monitor fence structure vibration or movement. “The system prevents false alarms by intelligently differentiating between serious breaches and disturbances by wildlife, birds, or harsh weather conditions,” explains Smit.

Sensors can be used with or without an energised pulse to detect intrusion without alerting the intruder.

The Z10 Tension Sensor measures the mechanical disturbance of a tensioned fence wire to raise an alarm when a wire is deflected during an attack. It continuously measures and reports wire tension in real time to identify when maintenance is required, or the fence has been damaged.

The Z20 Disturbance Sensor detects vibration or movement of the fence structure, generating alarms when disturbance meets predefined criteria – allowing early detection of any potential attacks.

Gallagher’s monitored pulse fence monitors voltage and detects if there is a short or a cut to the energised fence circuit resulting in a loss of voltage below a set threshold, generating an alarm for operators to follow up on. CCTV integrations with Command Centre allow operators to view live footage in response to an alarm, providing visual verification of any attacks.


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