Glossery

Scale for measuring temperature that originated with Daniel Gabriel Fahrenheit in the 1700s. Defined by the temperature at which water freezes (32

Any situation in which a risk of fire is present, whether that pertains to the presence of combustible substances, a ready source of ignition or of elevated concentrations of oxydizers.

See Stationary Gas Detection.

Flame detection works through IR, near-IR, UV analysis or similar techniques, thermal imaging and/or image recognition, through ionization detection or with thermocouple sensors. Flame detectors are used for fire alarms, process control, and cooking and heating systemes.

A gas is classified as extremely flammable if it is ignitable when in a mixture of 13% or less by volume in air at 20

The lowest temperature at which the vapours of a volatile substance ignite when given an ignition source.

An electrochemical cell that converts the chemical energy of a fuel and an oxidizing agent into electricity through a pair of redox reactions. In gas detection, carbon monoxide and alcohol sensors (for breathalyzers) can be made using the fuel cell principle.