What is a Survey Meter?
A survey meter is a portable handheld, electronic instrument used to detect radiation. It is recommended that a "pancake" type Geiger Mueller (GM) probe be used for isotopes which emit beta radiation and an energy compensated GM probe be used for gamma emitting isotopes with energies greater than 60keV. For low energy photon emitting isotopes (<60keV), it is recommended that a low energy gamma scintillator, such as a NaI detector, be used. 125Iodine is an example of an isotope which emits photons of energy less than 60keV. It should be noted that 3H cannot be detected with a standard lab survey meter and that only very large quantities of 14C can be detected with a Geiger counter.
How to Use a Meter to Monitor:
How to Use a Meter to Monitor Surface Contamination