ECM NH3 5250, Инструкция по эксплуатации, Страница: 26 / 62

22
Specifications and Limits
Measurements and Accuracies
Parameter Range Response Time Accuracy
NH
3
0 to 2000 ppm
1
< 1 s
2
±5 ppm (0 to 200 ppm)
Pressure 0 to 517 kPa, 75 Psia < 5 ms
3
±5.2 kPa
±0.75 Psia
1
NH
3
measurement for lean stoichiometries only (i.e.

>1).
2
The response time is affected by the programmable averaging filter for NH
3
See CAL Setup for more information.
3
T
he response time is affected by the programmable averaging filter for P.
See CAL Setup for more information.
Sensor Limits and Specifications

NH
3
Sensor
Maximum Exhaust Temperature: 450 °C, 842 °F
Maximum allowable levels of fuel "Impurities":
Lead: 0.012 gm/gal., 0.003 gm/ltr.
Phosphorous: 0.0008 gm/gal., 0.00027 gm/ltr.
Sulfur: 0.035% by weight
Do not use the NH
3
sensor in a heavily-sooting or crankcase-oil-burning engine
because these conditions will shorten the life of the sensor.
Thread Size: 18mm x 1.5mm
Lightly coat with non-lead containing antiseize compound.
The
NH
3
sensor's thread size is identical to that of the
exhaust gas oxygen sensors used in production automobiles with 3-way
exhaust catalysts.
Hex Size: 22 mm
Tightening Torque: 40

4 Nm, 30

3 ft-lbf