following the prompts. The Bootloader enables various low level recovery
tools, including updating the firmware from a USB stick.
Printed Circuit Assembly. An electronic circuit mounted on a printed circuit
board to perform a specific electronic function.
Standard litres per minute. This is the flow referenced to standard
temperature and pressure conditions. For the purposes of this manual, all
flows are referenced to 0 °C and 101.3 kpa (1 atm).
. Carbon monoxide is a colourless, odourless and tasteless gas caused by the incomplete
combustion of hydrocarbon fuels.
Carbon monoxide is a toxic gas to the human body, when inhaled it binds to haemoglobin, myoglobin
and mitochondrial cytochrome oxidase reducing oxygen storage, transport and respiration in these
organelles.
This can affect humans by causing low level symptoms such as headaches, nausea and dizziness leading
up to vomiting and loss of mental/muscular control at high exposure and death in extreme cases.
1.4.1 Measurement Theory
The measurement of carbon monoxide is completed via the following principles and measurement
techniques:
CO absorbs infrared radiation (IR) at a wavelength near 4.7 microns. IR radiation (at 4.7 microns) is
passed through a five-metre folded path length through sample air. The strength of the signal received
is proportional to the amount of CO in the sample. A band pass filter is fitted to the signal detector to
ensure only light near 4.7 microns wavelength is detected.
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