Re: Radiography chirpers

[John Andrews <andrewsjp@chartertn.net>]

With a nylon case (indestructable) and using a (common) nine-volt battery...



I still have an still use my 1960's Electro-Nutronincs PRM-2.  



By the way, it has a sensitivity of about 100 chirps per mR.  This is 

just fine for radiography, and believe it or not, I am able to tell the 

difference between one chirp in 30 minutes and 1 chirp in 20 minutes.  I 

once found a lost radium source that way.



John Andrews

Tom Hazlett wrote:



> Try this page for chirpers.

> http://harpellassociates.com/brs/brs-rad-alarm-chirper.asp

>

>

> james.g.barnes@ATT.NET wrote:

>

>> Dear all of you instrument manufacturers out there. . . .

>>

>> Would one of you *PLEASE* revive the old Eberline "Rad-Tad" design 

>> and re-

>> release it?  NO bells and whistles; just a LOUD chirp.

>>

>> Jim Barnes, CHP

>> Radiation Safety Officer

>> Rocketdyne / Boeing

>> james.g.barnes@att.net

>>

>>> I am looking for a source for some "dumb" radiation detectors, like 

>>> the old chirpers.  The current trend seems to be to have everything 

>>> be capable of being programmable, do data logging, etc.  While that 

>>> may be good for a HP to use, I need something idiot proof for my 

>>> guys who act as observers for radiography operations by 

>>> contractors.  Any help?

>>>

>>> Kim Merritt

>>> Radiation/Laser Safety Officer

>>> HazMed, Inc.

>>> NASA Langley Research Center

>>> Hampton, VA

>>> (757)864-3210

>>> <mailto:k.merritt@larc.nasa.gov>

>>

>>







************************************************************************

You are currently subscribed to the Radsafe mailing list. To unsubscribe,

send an e-mail to Majordomo@list.vanderbilt.edu  Put the text "unsubscribe

radsafe" (no quote marks) in the body of the e-mail, with no subject line.

You can view the Radsafe archives at http://www.vanderbilt.edu/radsafe/