Infrared point sensor

An infrared point sensor is a point gas detector based on the nondispersive infrared sensor technology.

Principle

Dual source and dual receivers are used for self compensation of changes in alignment, light source intensity and component efficiency. The transmitted beams from two infrared sources are superimposed onto an internal beam splitter. 50% of the overlapping sample and reference signal is passed through the gas measuring path and reflected back onto the measuring detector. The presence of combustible gas will reduce the intensity of the sample beam and not the reference beam, with the difference between these two signals being proportional to the concentration of gas present in the measuring path. The other 50% of the overlapped signal passes through the beam splitter and onto the compensation detector. The compensation detector monitors the intensity of the two infrared sources and automatically compensates for any long term drift.

Mean time between failures may go up to 15 years.

Micro heaters

Micro heaters can be used to raise the temperature from optical surfaces above ambient to enhance performance and to prevent condensation on the optical surfaces.

Range

Toxic gases are measured in the low parts per million (ppm) range. Flammable gases are measured in the 0 - 100% lower flammable limit (LFL) or lower explosive limit (LEL) range.

gollark: Can you post Lyric's Law? It appears to not be on the starboard.
gollark: Looping construct: jump backward one instruction (`L`)Branching construct: pick next instruction or previous instruction (`B`) - next if accumulator > 0, previous if accumulator <= 0.New branching construct: pick next instruction if user types `0` or previous if user types anything else (`N`)Making loop non-infinite: `E`, exits program if accumulator < 0.+1/-1 act on an accumulator initialized at zero (`+`/`-`)A program consists of a sequence of these instructions (first line) and arbitrary data encoded in base64 (second line) which is loaded into linear memory as bytes. These are executed left-to-right until the end is reached; when this occurs the direction of execution will be reversed.Infinite arbitrary data: command (`D`) to set accumulator to value of linear memory at position in accumulator.This language is called "HahaYourLawIsBad".
gollark: Hmm...
gollark: 124 wwwwwwwwwww123
gollark: Lyric's Second Law - "if one can name stuff after oneself, one will do so".

See also
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