Welcome to Secure Technologies Home Page!

Secure Technology> Products> Electronic Intrusion Detection Systems>
Taut Wire Perimeter Intrusion Detection System

The DTR Series Intrusion Detection Systems are electronic fences utilizing the taut wire principle of operation. Thus they offer the user the dual benefit of:

  • providing a physical barrier which can function as a stand-alone fence and
  • a highly reliable intrusion alarm sensor system.

DTR combat-proven, nearly maintenance-free systems work and work and work.

True Physical Barrier

 The DTR systems are based on an electro-mechanical sensor incorporated in a taut wire fence that serves as a true physical barrier. A DTR taut wire system can be installed as a stand-alone, wall-mounted or as an addition to an existing structure. No power supply is required in the field.

In the freestanding configuration, a DTR can be mounted on a variety of fence posts, including the standard angle-iron, pipe or concrete post of any size.

When wall-mounted or as an addition to an existing structure, the DTR fence can be installed as short posts, with or without outriggers. A DTR fence can follow the contour of almost any terrain and can be any desired height and length.

 

Very Low False Alarm Rate

 The latest generation DTR-3000 incorporates a very reliable, computerized, on-line intrusion alarm system with an extremely low false alarm rate (FAR) of less than 1 false alarm per 3 months, per kilometer, even in harsh climatic conditions.

Deflection of a DTR-3000 fence wire by spreading, climbing over or through the fence or release of wire tension by cutting, causes an immediate visual and audio alarm signal at the system's central control.

 The intrusion alarm system remains unaffected by forces of up to 25 kg. (50 lbs.), preventing false alarms caused by such small animals as rabbits, birds, cats and dogs.

Patented Self-adjusting Sensors

At the heart of the DTR-3000 intrusion detection system are patented electromechanical sensors that automatically self-adjust to any wire creepage caused by temperature variations, slight soil movements, etc. This important self-compensating feature significantly contributes to the reduction of false alarms.

 The DTR-3000 utilizes the same sensor as the DTR 2000 yet operates in a multiplex version allowing for better alarm resolution and more system flexibility.

 The DTR-3000 sensors are mounted on sensor posts, each of which is divided into 6 separate groups of sensors. Each group is separately - and continuously - monitored by the system control, enabling the continued normal functioning of all groups while one is undergoing periodic maintenance or is being serviced for a possible malfunction.

 Monitoring is done through the sophisticated Sensor Post Reporting Unit (SPRU) installed on each post and linked to the system control by an information cable. Each post has a tamper-proof cover monitored by the system control.

 Turnkey or Self-installation

A DTR-3000 system can be installed at the customer's premises by the manufacturer on a comprehensive turnkey project basis or can be supplied to the customer in ready assemblies for self-mounting on his existing or specially designed fence posts.

 Correct installation requires that each sensor post be mounted on a mechanically rigid support post that is firmly embedded in the ground. Each mounted sensor post should be located midway between 2 anchor posts which are used to secure the ends of the fence wires. The distance between anchor posts should not be more than 60 meters (200 ft.).

Sliding devices should be located at 3 meter (10 ft.) intervals between the sensor and anchor posts. These are designed to maintain proper wire spacing and convert vertical deflection of the wire into the lateral motion necessary to operate the sensors.

 Intermediate independent floating, sliding devices, operating on the same principle, can be fitted to the fence in accordance with the manufacturer's recommendations, in order to increase the sensitivity of the system.

 An entire DTR-3000 perimeter intrusion detection system is powered by just one power supply located in the system control, requiring no additional power supplies or battery backups in the field.

Optional Add-ons

Additional alarm devices, such as floodlights, sirens, CCTV, etc., may be connected to any sensor post in systems with an SPRU and activated either manually or automatically by the system control.

 For systems without an SPRU, an attractive option is the PAGER device. The PAGER device consists of two indicator LEDs which can be installed in each post for presenting a clear visual sign on the fence itself at the actual site of an alarm or malfunction.

Radio Frequency Interference (RFI) and Climate Proof

 The DTR-3000 patented electromechanical sensor is not effected by RFI, climatic and atmospheric conditions including lightning or by electrical transients from nearby power lines and vehicles.

 DTR-3000 System Components

The major components are as follows:

Field-mounted Equipment

  • sensor posts
  • anchor posts
  • slider posts
  • information cable
  • movement transfer wire (barbed wire)
  • tensioning and clamping accessories

Control Equipment

The DTR-3000 is available in 2 control configurations:

Configuration I

Computerized Control Center--CCC (IBM or compatible PC based)

Configuration II

Interference

Order leaflet on Advanced Computerized Control for more information.

DTR-3000 Technical Specifications

Physical Description 

fence length

no practical limitation

fence height

according to customer specifications

standard configuration

8 ft. vertical + 40" inclined outrigger, 24 + 10 wires

sensitivity

fixed and independent of climatic conditions

deflection force

25 kg. (50 lbs.) and more force will activate alarm

false alarm rate (FAR)

1 per 1 km per 3 months maximum

Environment
All external units are designed to meet MIL-STD-810 C. No degradation in performance when exposed to or operated in the following environmental conditions: 

temperature range

-32° to +72°C (-26°F +160°F)

relative humidity

up to 95%

rain, hail, snow, dust, UV radiation

unaffected

corrosive atmosphere

stainless steel option designed for high corrosion environment

lighting & electronic transients

meets MIL-STD-9094

Electro-magnetic Field Interference (EMI) Radio Frequency Interference (RFI)
Meets MIL-STD-461/462

Reliability 

MTBF detector

4.6 x 106 hours

MTTR

30 minutes

Specifications subject to change without prior notice.

For more information please feel free to contact us , or fill out our literature request form.