summary:
The NH3 5250 analyzer developed by ECM Corporation in the United States is a high-performance, sturdy, and durable NH3 analyzer used for selective catalytic reduction (SCR) system NH3 measurement in diesel engines and lean burn engines. It is installed through ceramic sensors for measuring NH3 in engine exhaust pipes. The technical advantages of this ceramic sensor are simple use, fast measurement, compact design, and durability. No need for sampling pipelines or sampling air pumps, simplifying installation and ensuring fast response. The communication cable between the sensor and the host can reach up to 100 meters in length without any loss in response time and accuracy. The calibration data of the sensor is stored in the storage chip of the connector, and users can calibrate the zero point and span of the sensor at any time. New calibration data is also stored in the storage chip of the connector.
The NH3 5250 analyzer is compatible with any fuel type, and all sensor parameters including sensor voltage, resistance, and heating voltage can be displayed and output. Can add a second NH3 measurement channel and display and output it. The optional pressure compensation kit is used for measuring accuracy compensation under high exhaust gas pressure conditions.
The NH3 5250 analyzer is designed to be compact and easy to operate, suitable for vehicle and bench testing. By providing six analog outputs, CAN communication, USB, RS232 communication, the NH3 5250 analyzer can be integrated into any data acquisition system. For the convenience of vehicle use, the NH3 5250 analyzer can be turned on and off through the ignition switch signal of the car.
The injection control of urea solution in SCR system is relatively difficult, with insufficient injection leading to an increase in NOx emissions, excessive injection leading to an increase in NH3 emissions and an increase in urea consumption. It is particularly difficult to control urea injection under transient conditions, therefore a fast NH3 measuring instrument is required. The NH35250 analyzer makes rapid measurement of NH3 quite easy and is an indispensable tool for the development of modern SCR systems.

Technical Parameter
Range: NH3: 0-2000 ppm (applicable only for λ>1)
Pressure: 0-517 kPa (0-75 psi)
Accuracy: NH3: ± 5ppm (0-200ppm)
Pressure: ± 5.2KPa (± 0.75Psia)
Response time:<1 second
Analog output: 6-channel 0~5V linearized analog output
Communication interface: High speed CAN communication, communication protocol can be set
USB and RS232 are used for data transmission and control
Power supply: 11-28VDC
Sensor: Thread specification 18mm × 1.5mm
Size cable: width 105mm x height 64mm x depth 165mm, standard 4-meter cable, maximum length 100 meters (optional)
Weight: Host 676g; Sensor module 244g
Working temperature: -40~+85 ℃ (electronic part); Zui High 450 ℃ (NH3 Sensor)
Options: Second NH3 channel, pressure compensation kit, bracket installation panel, calibrator, NH3 sensor simulator
Extended cable, AC/DC power adapter