Installation Manual

Electrical & Electronic Application And Installation Manual
Production Release Version 1.0
Page 111
Figure 9.13 Ammonia (NH3) Sensor and Controller
9.3.2 Ammonia (NH3) Sensor Configuration
No electronic configuration of the ammonia sensor is required.
9.3.3 Ammonia (NH3) Sensor Installation
There are two pieces of ammonia sensor hardware for which the OEM has
responsibility for installation, the sensing unit and the control unit. Both parts
of the ammonia device are supplied loose with each DOC & SCR only engine.
The sensing unit is delivered pre-wired with a 900mm harness length.
The sensing element has a number of mechanical installation requirements
which are detailed within the Mechanical A&I manual.
9.3.3.1 Ammonia (NH3) Sensor Control Unit Installation
The Ammonia sensor controller must be mounted in accordance with the
orientation limitations shown in figure 9.14. The control must be mounted to
the machine chassis in a location which adheres to the temperature and
vibration limits detailed in Table 9.9.
Figure 9.14 Ammonia Sensor Control Unit Mounting
Parameter
Design Limit
Vibration
Temperature Limit Electronic Control Unit -40° to 105°C
Temperature Limit Sensor Harness -40° to 275°C
Temperature Limit Sensor Grommet -40° to 200°C
Table 9.9 Control Unit Installation Limits
Location of the ammonia sensor control box should be made using the two
bolt holes located either side of the control box. These bolt holes are