This standard applies to dose equivalent (rate) meters and/or monitors for the measurement of ambient dose equivalent (rate) and/or directional dose equivalent (rate) from external beta, X and gamma radiation.
Note 1: The term dose equivalent may be used as an abbreviation of both ambient dose equivalent and directional dose equivalent.
This standard applies directly to dose equivalent (rate) meters intended for the determination of the dose equivalent or dose equivalent rate from external beta and/or X and gamma radiation of energies up to 10MeV for radiation protection purposes.
In this standard, the expression "dose equivalent (rate)" is used when the provisions apply to both the measurement of dose equivalent and the measurement of dose equivalent rate.
Note 2: This standard does not apply to medical radiology, where the conditions of radiation exposure may be extremely inhomogeneous, but precisely known.
Note 3: This standard does not apply directly to instruments intended to be worn by an individual for the purpose of estimating the radiation dose received by that individual.
The object of this standard is to specify the design requirements and the performance characteristics of dose equivalent (rate) meters intended for the determination of ambient dose equivalent (rate) and directional dose equivalent (rate).
Accordingly, this standard specifies:
a) General characteristics, the functions and performance characteristics of dose equivalent (rate) meters;
b) The methods of test to be used to determine compliance with the requirements of this standard.
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