The SEMTECH-NOx uses proprietary NDUV technology to measure NO and NO2 separately and simultaneously.

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SEMTECH NOx

SEMTECH-NOx: NO / NO2 Gas Analyzer

The analyzer meets the latest 2010 US EPA standards for vehicle emissions measurements, as defined in CFR40 part 1065, enabling laboratory grade measurements in a package that is rugged enough for both laboratory and in-use data collection.

  • Features
  • Specifications
  • Accessories
  • Options
  • 1065 Compliant: The SEMTECH-FID meets the US EPA 1065 compliance requirements for in-use testing.
  • Signal to Noise: The LED light source can be operated at very high frequencies, enabling an excellent signal to noise ratio.
  • 6 Temperature Controlled Zones: Six temperature controlled zones ensure accurate data throughout a wide range of ambient temperatures with minimal drift.
  • Optimized Signal Processing: Pre-amplifiers and ADC converters are designed to optimize dynamic range and resolution. This enhances longevity in regards to sample cell contamination and normal UV source aging.
  • Sample Conditioning: When used in conjunction with the SEMTECH-FEM, the sample is filtered and cooled prior to analysis, minimizing contamination of the analyzers.
  • Graphical Panel Display: A full color, graphic touch screen displays live data, and enables system setup and basic functions, such as zero and span.
  • Power Supply Monitoring: Power can be either 12 VDC, 110 VAC, or 220 VAC, with both current and voltage monitoring.
  • Dual Ports: Sample, air and exhaust ports are located on both the front face of the analyzer, and on the bottom. The bottom ports connect directly to the intake manifold of the SEMTECH-FEM, for a fast, simple connection of the two units. Front ports are available for the stand-alone configuration.
  • Weatherproof Construction: All components meet IP54 (NEMA 3) standards.
  • Shock Resistance: The mechanical design has been optimized for resistance to shock and vibration, ensuring data in the most rugged of in-use environments.
  • Design Details: Over a decade of experience in in-use emissions testing has gone into the design details of the SEMTECH ECOSTAR system, including:
    • EMI protection, including gaskets, filters and capped connectors
    • Stress relief for pneumatic connections
    • Channels for cable management
    • Standard Swagelok™ bulkhead connectors
    • Rugged Deutsch connectors for power and auxiliary connectors
    • Handles that lock to other SEMTECH ECOSTAR modules for stable system integration
Power: 12 VDC nominal (10.5 - 14.5 VDC); 110 VAC or 220 VAC
Warm up Time: 60 minutes to meet specifications
Storage Temperature: Dry -10°C to 60°C ambient
Operating Environment: -10°C to 45°C ambient
Dimensions: 43.6cm x 30.8cm x 13.6cm (WxDxH)
Weight: 13 kg
Data transmission: Ethernet, USB
Electromagnetic interference and susceptibility: CE Standards: IEC 61326: 2002-2

 

Gas NO NO2
Range 0 - 3,000 ppm 0 - 500 ppm
Accuracy ±2% of rdg or ±0.3% ±2% of rdg or ±0.3%
Resolution 0.3 ppm 0.3 ppm
Linearity
Intercept ≤ 0.5% range
0.990 ≤ Slope ≤ 1.01
SEE ≤ 1.0% range
R2 ≥ 0.998
Intercept ≤ 0.5% range
0.990 ≤ Slope ≤ 1.01
SEE ≤ 1.0% range
R2 ≥ 0.998
Repeatability ±1% rdg or ±1%FS* ±1% rdg or ±1%FS*
Noise < 1 ppm < 1 ppm
Span Drift (8 hrs) ±2% of span value ±2% of span value
Zero Drift (1 hr) ≤ 2 ppm absolute ≤ 2 ppm absolute
Analyzer Response Time T10-90 < 2.5s T10-90 < 2.5s
System Response Time T10-90 < 3.5s T10-90 < 3.5s
Data Rate ≤ 10 Hz programmable ≤ 10 Hz programmable
Flow Rate (nominal) 3 lpm 3 lpm

*whichever is greater
  • Gas Interconnect: When used in conjunction with the SEMTECH-FEM, the interconnect joins the 2 analyzers through a manifold, eliminating the need for additional pneumatic lines.
  • Dust Filter: A standard Briggs & Stratton air filter is fitted into the filter box on the rear of the unit.
  • Low CO Optical Bench: Coming soon
  • Vehicle Interface: Vehicle network data is obtained through the vehicle interface, recording important vehicle parameters along with the emissions data.
  • Enhanced Accuracy GPS: The GPS receiver tracks the route taken by the vehicle under test, recording signal quality, date, time, latitude, longitude, altitude and speed.
  • Weather Probe: The plug-and-play weather probe provides accurate humidity readings used in the emissions calculations.
  • Shock Mount Plate: This custom designed shock mount plate protects your equipment by absorbing the inevitable vibrations that come with in-use testing.