Discharge ionization detectors have generally supplanted them.

Some use ionization detectors, which tend to react a little faster to flaming fires.

In this article, we will examine the two most common types of smoke detectors used today: photoelectric detectors and ionization detectors.

And, we'll also take a look inside an ionization detector.

A proportional counter is a type of gaseous ionization detector that counts particles of ionizing radiation and measures their energy.

The three basic types of gaseous ionization detectors are:

Ionization-type smoke detectors are gaseous ionization detectors in widespread use.

A straw chamber is a type of Gaseous ionization detector.

Garden-variety ionization detectors respond quickly to fast-burning fires but also to cooking smoke.

Neutrons also do not ionize atoms except by direct collision, so gaseous ionization detectors are ineffective.