Variable		Measurement principle	Resolution	Accuracy	Measurement ranges IMR 3000 P
O₂	Oxygen	electrochem. sensor	0.1 vol. %	± 0.2%	0 - 20.9 %
CO	Carbon monoxide	electrochem. sensor	1ppm, mg, mg (O₂)	Z	0 - 4000 ppm²)
CO₂	Carbon dioxide	calculated	0.1 vol. %	± 0.2%	0 - CO₂max 3)
SO₂	Sulphur dioxide	electrochem. sensor	1ppm, mg, mg (O₂)	Z	0 - 4000 ppm²)
NO2	Nitric oxide	electrochem. sensor	1ppm, mg, mg (O₂)	Z	0 - 2000 ppm²)
NO	Nitrogen dioxide	electrochem. sensor	1ppm, mg, mg (O₂)	Z	0 - 100 ppm
H₂S	Hydrogen sulphide	electrochem. sensor	1ppm, mg, mg (O₂)	Z	0 - 200 ppm
℉ (℃)	Air temp	PTC resistance	1K	± 0.5K	-4℉ /+ 248 ℉ (-20 ℃ /+ 120℃)
℉ (℃)	Flue gas temp	thermocouple NiCr-Ni	1K	± 2%	-4℉ /+ 1472 ℉ (-20 ℃ /+ 800℃) 2192℉ (1200 ℃)
		PtRh-Pt	1K	± 1%	+302℉ /+ 2732℉ (+150℃ /+ 1500℃)
H₂O	Chimney / draft	semiconductor	0.004\" H₂O (0.01hPa)	± 0.2%	± 8\" H₂O (20 hPa)²)
λ	Lambda / excess air	calculated	0.01	± 0.2%	1.0 - 9.0
qA	Losses	calculated	0.1%	± 0.2%	0 - 99.9%
Soot	Smoke-spot	filter-paper method DIN 51402	exact amount of gas controlled by eletronic vacuum pump : 1.631 / min. ± 0.071 / min	± 0.2%	Standard
TUV-pruf Nr. By RgG		/			137
Z= 0 - 20% of whole measurement range ± 1% of maximum measurement 21 - 100 % of whole measurement range ± 5% of displayed measurement