Control of technical condition of car engines according to GOST 33997, as well as marine, diesel locomotive and industrial internal combustion engines according to GOST 31967, GOST R 52408. To determine the content of carbon monoxide, hydrocarbons, oxygen, nitrogen oxide and carbon dioxide in the exhaust gases of internal combustion engines, to determine the crankshaft speed and oil temperature of internal combustion engines with forced ignition of fuel, as well as to calculate the value of excess air ratio and volume content of the sum of nitrogen oxides.
The principle of operation is optical-absorption, electrochemical, induction and thermocouple.
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