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• FAQ
Can I go underwater or undermine while wearing Centurion ?
What is the difference between a closed circuit breathing apparatus and open circuit breathing apparatus ?
How do I understand that the adsorption capacity of filter is over ?
What is shelf life ?
How do I select particular respiratory protective equipment ?

Q :1

Ans_1
Can I go underwater or undermine while wearing Centurion ?

Centurion is not designed for prolonged use underwater. However accidentally if it is immersed underwater it can still be used effectively for its complete duration. The apparatus is tested underwater at a maximum depth of one meter for its effective use.
There is a separate range of breathing apparatus to be used especially undermines. Filter Self Rescuers (FSR) and Chemical type Self Oxygen Generators (KO2) are recommended for this purpose. So it is advisable not to use Centurion for this purpose.
Q :2


Ans_2
What is the difference between a closed circuit breathing apparatus and open circuit breathing apparatus ?

In Open circuit breathing apparatus ( Centurion) the exhaled air is released to atmosphere while in closed circuit breathing apparatus (KO2) the exhaled air is circulated via chemical regenerator to the inhalation phase. The closed circuit breathing apparatus is used in cases where the gases present in the atmosphere are highly toxic and have high diffusion coefficient.
Q :3

Ans_3
How do I understand that the adsorption capacity of filter is over ?

There is no visual test or indication to understand about the adsorption capacity of filters. You need to be cautious while using the low capacity filters and should replace the filter before it reaches its maximum protection time. To get the maximum protection time from a filter we advice you to keep the filter always protected from exposure to atmosphere and open the inlet or outlet cap prior to use only. If the caps are removed accidentally, immediately replace the caps tightly and take the weight. If the weight is more than 2% of the original weight mentioned, then discard the filter or refer the “Instructions for Use” page for further assistance. Since the filters after exposure to atmospheric moisture losses its effectiveness in an unpredictable manner the remaining capacity cannot be determined so it is better to use a fresh canister.

Q :4

Ans_4

What is shelf life ?

This is also termed as storage time and it is defined as the length of time in which a material can be stored under specified conditions of temperature and pressure and continue to meet specification requirements, remaining suitable for its intended use. The material should be discarded after its shelf life or contact the manufacturer for further assistance.
Q :5

Ans_5
How do I select particular respiratory protective equipment ?

There are certain broad guidelines for selection of a particular breathing apparatus suitable and adequate for given application. However we does not claim the perfectness of the information
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