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7. Technical information (measuring ranges, resolution and tolerances)
7.1 Exhaust-gas analysis in petrol-driven vehicles
Component Measuring range Resolution Accuracy ** from
measured value or absolute
CO 0.000 ... 10.00 % vol. 0.001 % vol. - - - - - -
0.000 ... 5.000 % vol. 0.001 % vol.
+ 5 % + 0.06 % vol.
CO
2
0.00 ... 18.00 % vol. 0.01 % vol. - - - - - -
0.00 ... 16.00 % vol. 0.01 % vol.
+ 5 % + 0.5 % vol.
HC 0 ... 9999 ppm vol. 1 ppm vol. - - - - - -
0 ... 2000 ppm vol. 1 ppm vol. + 5 % + 12 ppm vol.
O
2
0.00 ... 22.00 % vol. 0.01 % vol. - - - - - -
0.00 ... 21.00 % vol. 0.01 % vol.
+ 5 % + 0.1 %
λ 0.500 ... 9.999 0.001 - - - - - -
0.700 ... 1.300 0.001
+ 4 % - - -
NO 0 ... 5000 ppm vol. <= 1 ppm vol.
+ 4 % + 25 ppm vol.
0 ... 4000 ppm vol. <= 1 ppm vol.
+ 8 % + 50 ppm vol.
NO2 0 ... 100 ppm vol. <= 1 ppm vol. - - -
+ 25 ppm vol.
** The largest tolerance in each case is permitted
7.2 Opacity measurement
Measured variable Measuring range Resolution Calibration error limit
Opacity 0 - 100 % 0.1 % Country-specific
Absorption coefficient k 0 - 9.99 m
-1
0.01 m
-1
0.3 or 0.45 m
-1
in Germany
+ 0.15 m
-1
for k < 1 m
-1
+ 0.15 k
1
for k > 1 m
-1
7.3 Engine measurement system TDM+
7.3.1 Temperature measurement
Sensor Measuring range Resolution Tolerance
Temperature sensor -20°C ... + 150°C 0.16°C 2% from (m.v. -25°C) + 1.5%
7.3.2 RPM measurement, petrol-driven vehicles
Sensor Measuring range Resolution Tolerance
Terminal 1/TD/TN/EST 100 ... 15000 rpm 10 rpm
+ 10 rpm
Clip-on trigger sensor 100 ... 15000 rpm 10 rpm
+ 10 rpm
OT/sensor wheel/opt. sensor 100 ... 8000 rpm 10 rpm
+ 10 rpm
7.3.3 RPM measurement, diesel vehicles
Sensor Measuring range Resolution Tolerance
BDM 600 ... 6000 rpm 10 rpm
+ 2% from measured value
Clamp-on pickup 250 ... 7200 rpm 10 rpm
+10 rpm
RIV pickup 250 ... 7200 rpm 10 rpm
+10 rpm
OT sensor 100 ... 7200 rpm 10 rpm
+10 rpm
TD / TN signal 100 ... 7200 rpm 10 rpm
+10 rpm
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