Re: [PSES] [EXTERNAL] [PSES] Spark Ignition Source

2016-08-29 Thread Doug Powell 
Gary,

Actually, I am working with an flow battery system and using UL 9540 and UL
1973 for the safety standards.  There are precautions for monitoring the
release of potentially explosive or flammable gases (mainly hydrogen)
during many of the tests including over charge, over discharge, etc.  The
inspecting agency has suggested we use a sparking device instead of
instruments designed specifically for specific gases that measure the LEL
and LFL.

Thanks,  Doug




On Mon, Aug 29, 2016 at 12:21 PM, Gary McInturff <
gary.mcintu...@esterline.com> wrote:

> Doug
>
> Don’t have the answer to your actual question, but are you sure its
> natural gas and not N Hexane gas? I presume you're working on LN system or
> something but you may want to confirm, the gas type
>
>
>
> *From:* Doug Powell [mailto:doug...@gmail.com]
> *Sent:* Tuesday, August 16, 2016 4:53 PM
> *To:* EMC-PSTC@LISTSERV.IEEE.ORG
> *Subject:* [EXTERNAL] [PSES] Spark Ignition Source
>
>
>
> All,
>
>
>
> I am looking for a supplier of electrical spark ignition sources used in
> flammable vapor or dust testing.  It needs to have a calibrated energy
> level and be able to provide two sparks per second with sufficient energy
> to ignite natural gas.  Any help is much appreciated.
>
>
>
> All the best, Doug
>
>
>
>
>
>
>
> --
>
>
>
> Douglas E Powell
>
> doug...@gmail.com
> http://www.linkedin.com/in/dougp01
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.linkedin.com_in_dougp01=DQMFaQ=0hKVUfnuoBozYN8UvxPA-w=RJLDFgHJo89sjFN46b74hFXEuxvz4Z1iAx-glaOgP0k=kVeFuby_EGVu6f497pOz6CiO9ZkJuPWjZqldHvaipVM=PUUG3MjyryWCRdyPoWlk0WAK5XKqekibEL1XXELYcyI=>
>
> -
> 
>
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-- 

Douglas E Powell

doug...@gmail.com
http://www.linkedin.com/in/dougp01

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Re: [PSES] [EXTERNAL] [PSES] Spark Ignition Source

2016-08-29 Thread Gary McInturff 
Doug
Don’t have the answer to your actual question, but are you sure its natural gas 
and not N Hexane gas? I presume you're working on LN system or something but 
you may want to confirm, the gas type

From: Doug Powell [mailto:doug...@gmail.com]
Sent: Tuesday, August 16, 2016 4:53 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [EXTERNAL] [PSES] Spark Ignition Source

All,

I am looking for a supplier of electrical spark ignition sources used in 
flammable vapor or dust testing.  It needs to have a calibrated energy level 
and be able to provide two sparks per second with sufficient energy to ignite 
natural gas.  Any help is much appreciated.

All the best, Doug



--

Douglas E Powell

doug...@gmail.com<mailto:doug...@gmail.com>
http://www.linkedin.com/in/dougp01<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.linkedin.com_in_dougp01=DQMFaQ=0hKVUfnuoBozYN8UvxPA-w=RJLDFgHJo89sjFN46b74hFXEuxvz4Z1iAx-glaOgP0k=kVeFuby_EGVu6f497pOz6CiO9ZkJuPWjZqldHvaipVM=PUUG3MjyryWCRdyPoWlk0WAK5XKqekibEL1XXELYcyI=>
-


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 can be used for graphics (in well-used formats), large files, etc.

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Re: [PSES] Spark Ignition Source

2016-08-16 Thread Kevin Robinson 
A common source used for calibration of the spark test chamber for intrinsic 
safety testing is a 95 mH air core inductor connected to a 24vDC source with 
current limiting that is adjusted based on the gas group you are using.  

Kevin Robinson




On Tue, Aug 16, 2016 at 7:57 PM -0400, "Doug Powell"  wrote:










All,
I am looking for a supplier of electrical spark ignition sources used in 
flammable vapor or dust testing.  It needs to have a calibrated energy level 
and be able to provide two sparks per second with sufficient energy to ignite 
natural gas.  Any help is much appreciated.
All the best, Doug


-- 

Douglas E Powell

doug...@gmail.com
http://www.linkedin.com/in/dougp01


-





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Re: [PSES] Spark Ignition Source

2016-08-16 Thread Brian O'Connell 
Is typically two different things - the ASTM E2019/EN13821 MIE stuff or the Mil 
stuff based on an LEL mix.

Has been a very long while since these tests were witnessed, but do remember 
that the MIE tests can be rather sensitive to the shape of the VI curve per 
time, so L needs good control. Remember that the test conditions can be rather 
complex as it depends on suspensive gas, LOC/gas blanketing, colloids, 
volumetric R, charge build-up, temp/humidity, etc. The two labs that did my 
tests both used home-grown ignition sources: typical lab DC source that charged 
a series of calibrated RLC networks for the energy 'bucket'.

The test containers (steel spheres and columns) were complex and had several 
different types of igniter electrode pairs, and connections for multiple power 
sources.

Brian


From: Doug Powell [mailto:doug...@gmail.com] 
Sent: Tuesday, August 16, 2016 4:53 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Spark Ignition Source

All,

I am looking for a supplier of electrical spark ignition sources used in 
flammable vapor or dust testing.  It needs to have a calibrated energy level 
and be able to provide two sparks per second with sufficient energy to ignite 
natural gas.  Any help is much appreciated.

All the best, Doug

-- 

Douglas E Powell

doug...@gmail.com
http://www.linkedin.com/in/dougp01

-

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[PSES] Spark Ignition Source

2016-08-16 Thread Doug Powell 
All,

I am looking for a supplier of electrical spark ignition sources used in
flammable vapor or dust testing.  It needs to have a calibrated energy
level and be able to provide two sparks per second with sufficient energy
to ignite natural gas.  Any help is much appreciated.

All the best, Doug



-- 

Douglas E Powell

doug...@gmail.com
http://www.linkedin.com/in/dougp01

-

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