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NOx / NH3 5240
ECM’s NOX/NH3 5240 Analyzer is a remarkable instrument that combines the measurement of NOX, NH3, O2, and Lambda into a single, compact package. Unlike all other ceramic NOX sensor systems, the Model 5240 eliminates the cross-interference of NH3 in the NOX measurement and hence provides separate NOX and NH3 readings. By doing this, diesel engine SCR systems can be properly developed and tested since you now know whether an increased signal output is due to NOX (i.e. urea dosing too low) or NH3 (i.e. urea dosing too high). Distances of up to 100 meters between the sensors and the analyzer are possible with no degradation in 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 5240 is programmable for all fuel types (specified by fuel H:C, O:C, N:C ratios, or H2). NOX, NH3, O2, Lambda (λ), AFR, Equivalence Ratio (Φ), and all sensor parameters including pumping currents, cell resistance, and sensor age factor are available for display and output. For improved accuracy with high exhaust pressures, a pressure compensation kit is available.

The NOX/NH3 5240 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 5240 can be integrated into any data acquisition system. To simplify in-vehicle use, the NOX/NH3 5240 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 5240 into the loop of a real-time emissions control strategy.

Exhaust NOX, NH3, and O2 concentrations are of paramount importance to engine and aftertreatment developers and legislators. The NOX/NH3 5240 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
NH3 0 to 1000 ppm,
O2 0 to 25%,
λ 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)
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, 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, NH3, O2, λ, AFR, 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 Kit, Rackmount Kit (holds up to 4 analyzers/8 channels), NOx/NH3 Sensor Simulator, Extension Cables, AC/DC Power Supply
Jump to Optional Kits and Parts
Related Downloads:
NOx/NH3 5240 Brochure (09-15-2014, 252KB)
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 5240 Analyzer Kit
The complete kit includes the following parts:
1.5240 Display Head01-071
2.NOx/NH3 Sensors06-062
3.Eurofast 12mm Cable, 10m09-03\102
4.Flexi-Eurofast Cable, 0.3m09-042
5.Eurofast "T" Connector09-052
6.Eurofast Termination Resistor09-062
7.Lambda/NOx/NH3 Cable, 1m10-021
8.DC Power Cable, Banana Plugs11-161
9.Female Eurofast to DB9F11-051
10.Key-on Cable, 2m11-081
11.External Mounting Block12-481
12.remoteSAMPLER 100012-471
13a.Sample Line Kit, 1.3m, 1/4" (USA) (2 included), or12-451
13b.Sample Line Kit, 1.3m, 6mm (Metric) (2 included)12-461
14.1/4" NPT Mild Steel Boss and Brass Plug (USA)12-052
15.Filler Bottle14-091
16.Cupric Sulfate, 3gm (2 packages included)14-101
17.5200 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 compensation, these additional items are included:
1a.Pressure, Type KP, 0-75 psia, 1/4" NPT (USA), or07-051
1b.Pressure, Type KP, 0-517 kPa, 6mm (Metric)07-061
2.Module Y Cable10-211
3.Pressure Cable (4-terminal), 1m10-041
4a.Pressure Line Assembly, 1/4" NPT Tubing/Hose/Fittings, 28" Length (USA), or12-081
4b.Pressure Line Assembly, 6mm Tubing/Hose/Fittings, 711mm Length (Metric)12-111

1.Lambda/NOx/NH3 Cable, 2m10-031
2.Lambda/NOx/NH3 Cable, 3m10-371
3.Pressure Cable (4-terminal), 2m10-051
4.Pressure Cable (4-terminal), 3m10-401
5.AC/DC Power Supply, Universal, 24VDC 4.2A04-011
6.Vboost Power Supply (Boosts supply voltage to avoid dropout situations)04-021
7.NOx/NH3 5240 Calibration Kit14-111