Scalar:

This concept refers to a measurement or quantity which is capable of being represented on a scale that is neutron flux on source range, intermediate range, and power range meters).

Components

Three ranges are used to monitor the power level of a reactor by the full range of reactor operation: intermediate range, source range, and power range.  The source range generally uses a proportional counter, although the intermediate and power ranges use ionization chambers.   A compensated ion chamber is used for the intermediate range. A power range uses an uncompensated ion chamber.  Every of the three variant ranges make use of a few or all of the following categories of components.