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USER MANUAL

NI 9756

NI Powertrain Controls 

USB NOx Sensor Module Kit

Contents

Introduction .............................................................................................................................. 1
System Diagram ....................................................................................................................... 2
Hardware .................................................................................................................................. 2
Powering the Hardware ............................................................................................................ 3
Wiring Harness ......................................................................................................................... 5

Introduction

The National Instruments 9756 USB NOx Sensor Module Kit interfaces with NO

x

 and O

2

 

exhaust gas sensors. 

Features

Configurable for one or two channels

Measures NO

x

 (ppm) and O

2

 (%) concentrations

Sensor controller supply voltage of 12 V to 16 V (24 V version available)

Reverse battery protection on sensor controller module

Summary of Contents for 9756

Page 1: ... Wiring Harness 5 Introduction The National Instruments 9756 USB NOx Sensor Module Kit interfaces with NOx and O2 exhaust gas sensors Features Configurable for one or two channels Measures NOx ppm and O2 concentrations Sensor controller supply voltage of 12 V to 16 V 24 V version available Reverse battery protection on sensor controller module ...

Page 2: ...d an external power supply The first cable connects to the NI USB 8473 with a female DB 9 connector A terminating resistor of approximately 120 Ω is located inside this cable near the NOx Sensor Control Module and between the CAN High and CAN Low wires The second cable provides three non terminated leads for connecting to a power supply which requires two leads and for address selection of the NOx...

Page 3: ...e sensor enters preheating mode automatically until the Sensor Enable Boolean is set to TRUE within the supporting software The Sensor Enable Boolean turns the internal sensor heater to its ON state If the Sensor Enable Boolean is set to FALSE the sensor returns to preheating mode The preheating mode protects the sensor from mechanical cracks caused by water splash NOx Sensor Operating Temperature...

Page 4: ...ge 16 V NOx Sensor Supply Current Average supply current 1 5A Peak supply current at switch on 16 A Supply Power Maximum supply power 20 W NOx Sensor Miscellaneous Thread torque 50 N m 36 88 lb ft Lubrication Anti seize compound Figure 2 Installation Position Figure 3 Tilt Angle in Gas Flow Direction 0 80 Exhaust Gas Pipe Top 80 D E 90 10 10 ...

Page 5: ...pense and is subject to the applicable limited rights and restricted data rights as set forth in FAR 52 227 14 DFAR 252 227 7014 and DFAR 252 227 7015 NOx Sensor Controller Module Connector Type of connector Hirschmann MLK 872 860 501 Number of pins 5 Connector pin assignment Pin 1 Battery red Pin 2 Ground black Pin 3 CAN Low blue Pin 4 CAN High orange Pin 5 Address Switch purple Pulling Pin 5 to ...

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