Understanding Neutron Radiography Post Exam Reading VIII-Part 2a of 2A

Integrating Instruments
The instruments described above (Fig. 7) are generally rate meters; that is,
they indicate the radiation at the time of exposure and, depending on its time
constant, will return to background levels as the source is removed. Some
instruments may have an integration switch that introduces a capacitor to the
circuit to accumulate the charge. Leaving such an instrument at an operator’s
location will indicate the total amount of ionizing radiation that area has
received, from the time the instrument is engaged.
Charlie Chong/ Fion Zhang