Installation Manual

Electrical & Electronic Application And Installation Manual
Production Release Version 1.0
Page 107
9.2.2 NOx Sensor Configuration
No specific configuration is required to enable the correct operation of this
sensor.
9.2.3 NOx Sensor Installation
9.2.3.1 NOx Sensor Control Unit Installation
It is the customers responsibility to mount the NOx sensors. The location of
NOx sensor control unit must meet the criteria described below. Additional
mechanical installation requirements can be found in the Mechanical A&I
manual.
Installation Criteria
Specified Limits
Ambient Temperature Control Unit Operating temp 85°C
Max Surface Temperature Control Unit 99°C (24V) 93°C (12V)
Vibration 8Grms
Torque (max allowable on mounting tabs) 12Nm +/- 3
Table 9.5 NOx Sensor Installation Criteria
Figure 9.6 Acceptable NOx Sensor Orientation
The mounting orientation limitations of the sensor control unit are shown in
figure 9.6. NOx sensor control units must be mounted sufficiently far away
from one another to prevent cross installation of the sensor probes.
9.2.3.2 NOx Sensor Cable Routing & Support
The NOx sensor is fitted with a 915mm (12V option) and a 908mm (24V
option) length of harness between the back of the sensor unit to the sensor
control box. These limits are specified by the sensor supplier for EMC
requirements.
To ensure that the wires entering the back of the sensing element are
adequately protected against over stress and damage during engine
installation and machine operation, the harness must be secured to meet the
requirements listed below.
• Sensor harness must exit the grommet (at the rear of the sensing
element) at no more than a 15Deg angle maintained for at least 10mm
from the rear of the sensing element.
• Harness must be strain relived at the rear of the sensing element.