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2. Components of jet engines - Wikipedia

   en.wikipedia.org/wiki/Components_of_jet_engines

   For example, the General Electric F404-400 uses one igniter for the combustor and one for the afterburner; the ignition system for the A/B incorporates an ultraviolet flame sensor to de-activate the igniter after light-off on minimum fuel has been detected.

3. Flame detector - Wikipedia

   en.wikipedia.org/wiki/Flame_detector

   A flame detector is a sensor designed to detect and respond to the presence of a flame or fire, allowing flame detection.Responses to a detected flame depend on the installation, but can include sounding an alarm, deactivating a fuel line (such as a propane or a natural gas line), and activating a fire suppression system.

4. Pulsed discharge ionization detector - Wikipedia

   en.wikipedia.org/wiki/Pulsed_discharge...

   Response to fixed gases is positive (increase in standing current), with an MDQ in the low ppb range. The PDD in helium photoionization mode is an excellent replacement for flame ionization detectors in petrochemical or refinery environments, where the flame and use of hydrogen can be problematic.

5. Flame ionization detector - Wikipedia

   en.wikipedia.org/wiki/Flame_ionization_detector

   Flame ionization detectors cannot detect inorganic substances and some highly oxygenated or functionalized species like infrared and laser technology can. In some systems, CO and CO 2 can be detected in the FID using a methanizer , which is a bed of Ni catalyst that reduces CO and CO 2 to methane, which can be in turn detected by the FID.

6. Artillery fuze - Wikipedia

   en.wikipedia.org/wiki/Artillery_fuze

   Sensor fuzes can be considered smart proximity fuzes. Initial developments were the United States ‘Seek and Destroy Armour’ (SADARM) in the 1980s using sub-munitions ejected from 203 mm (8.0 in) carrier shell. Subsequent European developments, BONUS and SMArt 155, are 155 mm (6.1 in) calibre due to advances in electronics. These sensor ...

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