Author Topic: Vesda sampling system (Read 18970 times)

Kevin Shea · « **Reply #15 on:** February 12, 2008, 10:23:28 AM »

Hi Ken,

Sorry about the delay in getting back to you! Gazzaa is right about the old E70D Xenon detectors becase the sensitivity is unajustable they are not the right VESDA unit to use in a dirty environment with losts of air bourne debris. Also on a side note all of the Xenon detectors are now obsolete and we no longer support those types, we are offering an incentive for any xenon upgrades to our new detectors if people are interested.

Off the top of my head I cannot remember any circumstances where VESDA units have been used to protect areas that include cement works specifically. We have however had successful installations within a paper recycling facility which creates a huge amount of paper dust in the environment with out any problems. The detection sensitivity threshold will definately be set towards the lower end of the range. All I would suggest is to set the system for a autolearn period to establish what the general background dust levels. Fomr this you should be able to minimise false alarms but setting your alert, alarm and fire thresholds to suit the envirnment. Also remember that in these dirty environs the VESDA filters will need to be replaced at regular intervals to remain effective.

I hope this helps! Any questions just email me.

Kevin Shea
Xtralis Lts
KShea@xtralis.com

Ashley Wood · « **Reply #16 on:** February 12, 2008, 10:48:12 AM »

Ken, I have seen aspirating systems installed in a couple of flour mills. They worked fine but needed an extra inline filter and lots of maintenance. Sorry Kev, it was one of your competitors but non the less an aspirating system.

Kevin Shea · « **Reply #17 on:** February 12, 2008, 11:55:26 AM »

Ashley you wound me sir! Surely there is no other aspirating systems apart from VESDA!? But yes, you will need to do regular mainenance on any asd systems in environs like flour mills whether they are VESDA or others like Airsense.

VESDA Kev
KShea@xtralis.com

Ashley Wood · « **Reply #18 on:** February 12, 2008, 03:12:27 PM »

Kev,

I always specifiy VESDA on my projects as I think you are the market leaders.

My opinion and I'm sticking to it :- )

Kevin Shea · « **Reply #19 on:** February 12, 2008, 03:14:07 PM »

Ashley if I didn't know any better I would say you're angling for commision..

Ashley Wood · « **Reply #20 on:** February 12, 2008, 04:49:51 PM »

Commission, Whats that then?

Ken Taylor · « **Reply #21 on:** February 12, 2008, 06:19:58 PM »

Thanks, Kev.

I have tended to use the term 'Vesda' in much the same way as people refer to 'Thermos' instead of 'vacuum flask' or 'Evac Chair' instead of 'evacuation chair'. Sometimes architects, surveyors and builders wrongly conclude that you are using a colloquial generic term rather than a specific product name - so they need watching - but they do anyway.

jokar · « **Reply #22 on:** February 13, 2008, 10:54:17 AM »

I always get my wife to hoover although it is made by Dyson. I can't get round the words I want you to do some dysoning. As regards the word vacuum, thats what I have been living in for a number of years.

Kevin Shea · « **Reply #23 on:** February 13, 2008, 02:04:28 PM »

That would be a good for us if all asd was referred to as VESDA so long as they did specify and use VESDA which by the sounds of it some people don't. Maybe we could start using the term vesdering?? Mhhmmm.. what do you guys think?

VESDA Kev
Xtralis Ltd
KShea@xtralis.com

Ken Taylor · « **Reply #24 on:** February 13, 2008, 05:24:31 PM »

Fortunately, I don't have to get my wife to do the vacuuming, Jokar, as she assumes it's her job anyway - just like she assumes that it's mine to operate the credit card.

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Author Topic: Vesda sampling system (Read 18970 times)