Re: Dosimeter & Surveymeter

[james.g.barnes@att.net]

A dosimeter is used to measure dose over a period of 
time.  All the dose received over a period of time is 
"added together" by the device into one number.  This one 
number tells how much dose was received for the entire 
exposure period.  A dosimeter reads out in dose 
(milliroentgen, roentgen, etc.).  It does not directly 
measure the dose rate, but an average dose rate can be 
calculated from the "dose/exposure time" relationship.

A survey meter measures the radiation field present at 
that point in time.  It measures dose rate (mrem/hour, 
mrem/minute, etc.).  A survey meter does not tell you how 
much dose a person may have received.  It tells you how 
strong the radiation field is.  Dose would then be 
determined by the dose/rate * exposure time relationship.

A dosimeter is used to determine how much dose a person 
received while in a radiation field.  A survey meter is 
used to measure how strong that field is.

Hope this helps,

Jim Barnes, CHP
Radiation Safety Officer
Rocketdyne/Boeing
james.g.barnes@boeing.com
> Dear Users and Vendors,
> 
> I have one question.
> 
> What is difference Dosimeter & Survey meter ?
> I confuse concept  about it.
> 
> Bongchan Park
> 
> 
> 
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information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html