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 EB789320 Now located outside 
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Joined: Mon Jan 28, 2013 7:40 pm
Posts: 2732
Location: Illinois
Hello neighbor, what is going on with your station?

Can you verify your readings?

My station has been higher than normal but nothing like yours.

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MY OUTSIDE RADIATION MONITORING STATION:
South Beloit, Illinois - GMC200 Outside on HEPA air purifier, ground level, facing West.
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Sat Aug 16, 2014 10:59 pm
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Joined: Fri Nov 01, 2013 1:07 pm
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Location: St. Charles, IL
Yeah, I know the readings have been very high at times. Equipment is fine as far as I can tell. Today, readings back in the 20's.

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Mon Aug 18, 2014 11:52 am
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Joined: Fri Nov 01, 2013 1:07 pm
Posts: 125
Location: St. Charles, IL
New HEPA filter installed 9/29/2014 for outside filtration system.

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Mon Sep 29, 2014 5:46 pm
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EB789320 wrote:
As of 1/25/2013, EB789320 in St. Charles, IL is located outside attached to Holmes HEPA filter.

Regards,


Posted this earlier but wanted to make sure you got it so...

CPM: current 1720 High 1894 Low 1557 Average 1708
GMC-300E Plus w PI Located Outside attached to Holmes HEPA Filter




There are only a couple of reasonable explanations for these outrageous readings...

1) Bad filter unit:

Bear in mind that it is possible that the magnets in this unit are to blame as they are rare earth and if manufactured with contaminates or assembled wrong these magnets could produce hot particles. As the unit operates these magnets rub against the motor shaft to produce the connection required to turn the fan inside the unit.

Kinda scary to think you could purchase a bad filter unit and contaminate your home with cobalt or other rad materials...



2) Hot particle trapped in the filter unit.

As a particle gets trapped in the filter unit it continues to register and add to the overall count from then until it decays or you change the filter. As another gets trapped it doubles the reads and so on. If the particle(s) get by the filter and lodge in the unit itself changing the filter won't eliminate the "spiked" readings. I would have to say (just guessing) you have one or more hot particles lodged in the purifier unit. After switching out the detector and getting the same readings it must be the purifier unit that has the particle(s).

As there is a plastic bag covering the detector this would be a (rather HOT) Gamma detection.

My suggestion is to try a completely new purifier of a different manufacture. If you get the same readings over time it would indicate hot particles in the environment.


Be very careful when handling the current unit. Place it (filter attached) in a plastic bag and check with Arnie over at Fairewinds to see if they would like to test it.

And please let me know what happens as if they are not interested I may can find you someone who is.


For more info...

Read my post: Lung particle simulation - Do it now!!!

[url]

https://www.netc.com/bb/viewtopic.php?f=23&t=1095

[/url]

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Fri Nov 21, 2014 10:36 am
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Joined: Sun Nov 24, 2013 5:14 pm
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Hey...

Been thinking ;-) about this and it may be that winds are
hitting the unit and stressing the motor (i would expect some probs with
smoke from the magnets if the wind pressure from a gust blows through the
unit.).




I like a large plastic tote container as a idea to stop this prob...


White is better but...

http://www.walmart.com/ip/Rubbermaid-Cl ... e/38664641


Put it upside down on a post and place the units under it. Screw the lid
down through the upside down container into the post (or use the lid for
something else) and let the container be open underneath.

Use some velcro tape to fasten the counters and pi to the inside of the
container.


Best to let the velcro tape cure inside a heated place and I would staple
the velcro tape to the plastic container.

Do this and you may be able to remove the plastic bag(s) from your
counter(s) as they will already be weatherproof.

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Fri Nov 21, 2014 7:03 pm
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OK, This is starting to get old...

... If these readings are accurate we have a real problem.

... Truthfully you shouldn't redesign the "wheel".

...If these readings were not spiked by unknown procedures and a redesign of the actual counter ALL those "in the know" could be at your aid immediately. If these readings were (verifiable) accurate we could expect to see sickness on a mass scale quickly....

Hasn't happened...

If these readings are "skewed" it detracts from ALL the data gathered, from everywhere for this database...


I wish I had the funds to place a beta gathering station on my property (but I don't). Changing ANY scientific instrument negates it's accuracy. I will therefore NOT alter the instruments used for my (very critical) data.


Ever heard of " Chicken Little"? Is the sky really falling? If it is then someone with a acronym (FBI, NSA, HSA) SHOULD find the source as this will be a VERY INTENSE localized detection. This is almost unthinkable and I'll bet if you place a new counter outside WITHOUT it being sealed in a plastic bag or using any other "addons" you will get totally normal reads.




I sincerely hope that these reading are a figment created by altering a measuring instrument (imagine your gas gauge telling you the car is full when it's not. ;-(...




WE MUST have accurate measurements FULL TIME to have any reliance and/or faith in the data... If your readings really are accurate please follow the proper procedures in reading ALL the filters (AC, WATER, VAC CLEANER, CAR ETC...) in your immediate area to PROVE IT TO YOURSELVES.


A quick starter post is...

https://www.netc.com/bb/viewtopic.php?f=23&t=1095

... You must follow the recipe to the letter and feel free to send me the numbers as someone needs to get to the bottom of this situation quickly.



I hope you don't have a legitimate problem!!!

Let me know what happens...




EB789320 wrote:
As of 1/25/2013, EB789320 in St. Charles, IL is located outside attached to Holmes HEPA filter.

Regards,

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Mon Dec 01, 2014 1:49 pm
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Joined: Sun Nov 24, 2013 5:14 pm
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KingCobra wrote:
Hello neighbor, what is going on with your station?

Can you verify your readings?

My station has been higher than normal but nothing like yours.



OK, This is starting to get old...

... If these readings are accurate we have a real problem.

... Truthfully you shouldn't redesign the "wheel".

...If these readings were not spiked by unknown procedures and a redesign of the actual counter ALL those "in the know" could be at your aid immediately. If these readings were (verifiable) accurate we could expect to see sickness on a mass scale quickly....

Hasn't happened...

If these readings are "skewed" it detracts from ALL the data gathered, from everywhere for this database...


I wish I had the funds to place a beta gathering station on my property (but I don't). Changing ANY scientific instrument negates it's accuracy. I will therefore NOT alter the instruments used for my (very critical) data.


Ever heard of " Chicken Little"? Is the sky really falling? If it is then someone with a acronym (FBI, NSA, HSA) SHOULD find the source as this will be a VERY INTENSE localized detection. This is almost unthinkable and I'll bet if you place a new counter outside WITHOUT it being sealed in a plastic bag or using any other "addons" you will get totally normal reads.




I sincerely hope that these reading are a figment created by altering a measuring instrument (imagine your gas gauge telling you the car is full when it's not. ;-(...




WE MUST have accurate measurements FULL TIME to have any reliance and/or faith in the data... If your readings really are accurate please follow the proper procedures in reading ALL the filters (AC, WATER, VAC CLEANER, CAR ETC...) in your immediate area to PROVE IT TO YOURSELVES.


A quick starter post is...

https://www.netc.com/bb/viewtopic.php?f=23&t=1095

... You must follow the recipe to the letter and feel free to send me the numbers as someone needs to get to the bottom of this situation quickly.



I hope you don't have a legitimate problem!!!

Let me know what happens...

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Mon Dec 01, 2014 1:50 pm
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Joined: Fri Nov 01, 2013 1:07 pm
Posts: 125
Location: St. Charles, IL
Filter change at 6:05PM CT 12/1/2014.

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Mon Dec 01, 2014 9:33 pm
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Great!!! :-) Your averages look better now...


12-3-14 10:30AM EST


now averaging 16 CPM

BE VERY CAREFUL with that filter unit as you never know what may be trapped in it... Probably cobalt from the magnets (hopefully)...

With the right gear you can find this out by downloading a free program called...


Theremino


Click below to find out how to set this up...

...you may have to switch the language to English by clicking the American Flag at the top of the page.


[url]
http://www.theremino.com/blog/gamma-spectrometry
[/url]




Free, expert level stuff here so its a matter of "how far" you want to go down the rabbit hole...



EB789320 wrote:
Removed geiger from direct contact with filter at 6:00 pm ct 12/2/2014



EB789320 wrote:
As of 1/25/2013, EB789320 in St. Charles, IL is located outside attached to Holmes HEPA filter.

Regards,

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Wed Dec 03, 2014 11:04 am
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Joined: Fri Nov 01, 2013 1:07 pm
Posts: 125
Location: St. Charles, IL
Received my new Holmes filtration system as other unit died. Have reattached the geiger to the filtration unit as of 12/12/2014 at 5:52PM CT.

Best,

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Fri Dec 12, 2014 6:53 pm
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