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In practice, vandal resistant housings do come in a variety of shapes and sizes, and yet the description can be somewhat misleading.The term resistant suggests that they can cope with whatever life, or should that be an absolute low life, can quite literally throw at them. And yet damaging these heavy gauge (often pressed steel construction units is not an impossibility. Whilst the box itself may be reasonably resistant to attack, the window can be supplied in various ballistic rated versions, although none could be considered to be totally perfect. In practice, the weakest part of most vandal resistant installations is usually the mountings (screws mistakenly used instead of heavy duty bolts), or the cable protection is left exposed to attack. Nowadays, the majority of vandal resistant designs are based on small dome cameras, often with the shell machined from a solid block of aluminium, and the dome itself made from high impact polycarbonate SPECIALIST CAMERA HOUSINGS Apart from the everyday ‘run of the mill’ units used for general environmental protection, there are a number of specialist housings available for unusual applications. Although most weatherproof housings can withstand heavy rain, they are not designed to cope with a flood. Unlike the high performance marine versions which are normally manufactured from stainless steel; including some varients which may safely be installed underwater at extreme depths. In fact. the deeper underwater units are usually gas compressed internally, to help minimise the risk of any inward leaks. High temperature and blast furnace monitoring housings are capable of withstanding extremes of temperature, usually with an ancilliary fluid cooling system attached. In terms of extreme specialisation, you only need to consider the requirements for the nuclear industry, where any bulk standard housing would probably have a half life of not very long. | |||||||||||||||||||||||||||||
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