Ultra Long Distance Thermal Cameras

Detection Range of up to 20km

Axis Thermal Cameras

Bosch Thermal Cameras

Hikvision Thermal Cameras

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For extra-long range applications to protect any high asset value property, our ultra long range thermal cameras are the best choice for security, as it uses a broad range of uncooled and cooled thermal cameras, combined with video and security radar.

Using the latest technological advances, Security Radar brings Silent Sentinel’s affordable thermal imaging technology to commercial surveillance and security applications. All models are designed to operate without ambient light or illumination and will provide excellent image quality in challenging environments. All can be used as a standalone security device or to enhance the capability of any video surveillance system.

The ultra long range thermal Imaging cameras measure heat and convert it into a visible image which makes it ideal for zero light surveillance, and will operate in all weather conditions, even fog. The cameras provide a high contrast image which is perfect for video analytics and motion detection. Radiometric models will give an alarm output when a parameter is breached.

Security Radar has a very extensive range of thermal imaging cameras for all applications. When combined with a video camera and radar, the best features of radar, video and thermal are combined to provide the user with a surveillance device to capture any event.

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    Thermal Images

    Infrared is a part of the electromagnetic spectrum with wavelengths that are longer than visible light. Infrared is typically divided into near, mid, long and extreme and is measured in units known as microns or nanometers. Thermal technology detects infrared energy in the mid-wave infrared (MWIR) spectrum at 3-5 microns or long-wave infrared (LWIR) at 8-12 microns. Day or night, in any environment, every person, object and structure emits infrared waves.

    The warmer an object, the more energy it emits. Infrared energy emitted by a viewed scene is focused through the specialized objective lens assembly of an infrared camera on to the camera’s focal plane array (FPA). The FPA uses materials that respond by generating electrical impulses when infrared energy strikes it. These electrical impulses are then sent in the form of temperature values to an image signal processor that turns them into video data for presentation on a display.

    Thermal technology provides clear, high-resolution images through smoke, haze, dust, light fog or even on the darkest night, so it often is the perfect choice for 24-hour surveillance. For example, thermal cameras can pick out vehicles that have been driven recently and still have warm engines or ground that has recently been disturbed by footprints or by burying hidden objects.

    Two types of thermal technology are available, each with its own advantages.

    For some applications, especially for long-range detection, it is advisable to use “cooled” sensors. These sensors utilise a highly efficient cryogenic cooler that enables the detector to sense smaller differences in infrared emissions. Cooled technology can often capture images at a greater distance, produce a higher-resolution image and operate with smaller optics.

    Un-cooled Thermal Images

    Uncooled thermal imagers use detectors that are either stabilised to temperatures between -30°C to +30°C or are not stabilised at all.

    Benefits of uncooled thermal:

    • Low maintenance 
    • Lower costs
    • Reliable

    Cooled Thermal Images

    Cooled thermal imagers use detectors that are cooled to temperatures of 77 degrees Kelvin (roughly -200°C) or lower.

    Benefits of cooled thermal:

    • Very sensitive to temperature change
    • High sensitivity = longer range

    Thermal Cameras





    Key applications include:

    • Border and perimeter control
    • Town centre open space
    • Prisons and correctional facilities
    • Retail and industrial parks
    • Utilities (specialists for solar farm, wind turbine)
    • Airports and transport hubs
    • Hospitals and schools
    • Oil and gas terminals
    • Long range highway monitoring.
    • Sports and public arenas
    • On vehicle rapid deployment

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