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NOx / NH3 5241 (Diesel and Lean-Burn Engines Only)
ECM’s NOx/NH3 5241 Analyzer is a remarkable instrument that combines the measurement of NOx, NO, NO2, NH3, O2, and Lambda into a single, compact package. Designed for use with diesel and lean-burn engines, the Model 5241 is useful for both engine and aftertreatment (ex. SCR) development. Engine output (NOx, NO, NO2, O2), dosing (NH3), and tailpipe output (NOx, NO, NO2, NH3, O2) can be measured with the same instrument. Distances of up to 100 meters between the sensors and the analyzer are possible with no degradation in accuracy or response time. The sensors have their calibration stored in a memory chip in the sensors' connectors. Calibration can be performed by the user (Zero, Span) and is written into the memory chip. This allows sensors to be recalibrated in a central location (or by ECM) and distributed to users, ensuring consistent results throughout a large test facility.

The NOx/NH3 5241 is programmable for all fuel types (specified by fuel H:C, O:C, N:C ratios, or H2). NOx, NO, NO2, NH3, O2, Lambda (λ), AFR, FAR, Equivalence Ratio (Φ), and all sensor parameters are available for display and output. For improved accuracy with high exhaust pressures, a pressure compensation kit is available.

The NOx/NH3 5241 is compact, yet easy to read, making it suitable for both dynamometer and in-vehicle applications. With six analog outputs, CAN, and USB communication, the NOx/NH3 5241 can be integrated into any data acquisition system. To simplify in-vehicle use, the NOx/NH3 5241 can be turned on and off with a signal from the vehicle's ignition switch. This feature along with the analyzer's CAN communication capability makes it possible to integrate the NOx/NH3 5241 into the loop of a real-time emissions control strategy.

Exhaust NOx, NO, NO2, NH3, and O2 concentrations are of paramount importance to engine and aftertreatment developers and legislators. The NOx/NH3 5241 makes these difficult measurements with ease and is an indispensible tool for the development of modern engine systems.

Video Tutorial for Producing .dbc Files
Ranges:NOx 0 to 5000ppm (for λ > 1 only)
NO 0 to 5000ppm (for λ > 1 only)
NO2 0 to 5000ppm (for λ > 1 only)
NH3 0 to 2000 ppm (for λ > 1 only)
O2 0 to 25%,
0.4 to 25
AFR 6 to 364
F/A 0.003 to 0.167
φ 0.04 to 2.5,
Pressure (optional) 0 to 517 kPa (0 to 75 psia)
Accuracies:NOx ± 5ppm (0 to 1000 ppm), ± 1% (elsewhere)
NO ± 5ppm (0 to 1000 ppm), ± 1% (elsewhere)
NO2 ± 5ppm (0 to 1000 ppm), ± 1% (elsewhere)
NH3 ± 5ppm (0 to 1000 ppm), ± 1% (elsewhere)
%O2 ± 0.2% (absolute)
λ, AFR, φ ± 0.8% (at stoichiometric), ± 1.8 (average, elsewhere)
Pressure (optional) ± 5.2 kPa (± 0.75 psia)
Response Time:Less than 1 s (NOx, NO, NO2, NH3). Less than150 ms (O2, λ, AFR, φ).
Fuel Type:Programmable H:C, O:C, and N:C ratios, and H2
Analog Outputs:6 channels, 0 to 5V linearized and programmable for NOx, NO, NO2, NH3, O2, λ, AFR, FAR, φ, Pressure, etc.
CAN:Programmable communication protocol
USB:Data transfer
Power:11 to 28 VDC, AC/DC (optional)
Sensors:18mm x 1.5mm thread, 1/4" NPT (pressure)
Size and Cable:105mm x 64mm x 165mm (W x H x D), 4m cable (std), up to 100m (optional)
Operating Temp.:Electronics -40 to +85°C
Sensor 850°C (maximum continuous)
Options:Pressure Compensation, Rackmount Kit (holds up to 4 analyzers/8 channels), Extension Cables, AC/DC Power Supply, NOxt Sensor Simulator, NH3 Sensor Simulator
Jump to Optional Kits and Parts
Related Downloads:
NOx/NH3 5241 Brochure (09-15-2014, 265KB)
Vboost Power Supply Brochure (165KB)
ETAS INCA Setup Guide (1052KB)
ATI VISION Setup Guide (504KB)
ECM CAN Configuration Tool (v4.48.10, 31499KB)
Firmware Update Procedure for Display Heads (158KB)
Ordering Information, Complete Kit P/N: NOx/NH3 5241 Analyzer Kit
The complete kit includes the following parts:
1.5241 Display Head01-091
2.NOxCANt Module02-071
3.NH3CAN Module02-121
4.NOx Sensor (Type T)06-051
5.NH3 Sensor06-071
6.Eurofast 12mm Cable, 4m09-011
7.Eurofast 12mm Cable, 2m09-022
8.Flexi-Eurofast Cable, 0.3m09-044
9.Eurofast "T" Connector09-055
10.Eurofast Termination Resistor09-063
11.Lambda/NOx/NH3 Cable, 1m10-022
12.DC Power Cable, Banana Plugs11-161
13.Female Eurofast to DB9F11-051
14.Key-on Cable, 2m11-081
15.18mm x 1.5mm Mild Steel Boss and Stainless Steel Plug12-022
16.5200 Series Manuals & Configuration Software CD
This PC-based software allows configuration of CAN communication, calibration of sensors, and data logging. Requires Kvaser, Vector, or Peak USB-to-CAN adapter. (Available from ECM, see P/N 13-02 below)

Optional Kits and Parts:

For pressure measurement, these additional items are included:
1a.Pressure, Type KP, 0-75 psia, 1/4" NPT (USA), or07-052
1b.Pressure, Type KP, 0-517 kPa, 6mm (Metric)07-062
2.Module Y Cable10-212
3.Pressure Cable (4-terminal), 1m10-042
4.Pressure Line Assembly, 1/4" NPT Tubing/Hose/Fittings, 28" Length (USA)12-082
5.Pressure Line Assembly, 6mm Tubing/Hose/Fittings, 711mm Length (Metric)12-112

1.AC/DC Power Supply, Universal, 24VDC 4.2A
(Highly Recommended for Dynamometer Installations)
2.Vboost Power Supply (Boosts supply voltage to avoid dropout situations)04-021
3.DC Power Cable, Spades11-151
4.Eurofast 12mm Cable, 10m
(Highly Recommended for Dynamometer Installations)
5.Lambda/NOx/NH3 Cable, 2m10-032
6.Lambda/NOx/NH3 Cable, 3m10-372
7.Pressure Cable (4-terminal), 2m10-052
8.Pressure Cable (4-terminal), 3m10-402
9.CAN-to-USB Adapter13-021
10.19" Rackmount Panel (holds up to 4 display heads or 4 dashCANs)12-011
11.Aluminum Remote Sensor Mounting Block for Type T NOx Sensor
(18mm x 1.5mm, 5 x 1/4" NPT)
12.Individual Cylinder Exhaust Probe (18mm Tall x 1.5mm) (USA)12-511
13.Individual Cylinder Exhaust Probe (18mm Tall x 1.5mm) (Metric)12-521