On Board Emissions Analyzers

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Inspection & Maintenance Emissions Analyzers

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Environmental Applications

DS

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Since its introduction in 2002, Sensors' SEMTECH-DS has set the standard for Portable Emissions Measurement Systems (PEMS). Capable of monitoring both spark ignition and compression ignition engines, the DS measures CO, CO2, O2, NO, NO2 and THC, ensuring compliance with EPA's CFR 1065. Sensors works closely with environmental agencies and engine manufacturers throughout the world, ensuring that the DS continues to define and raise the global standards for in-use vehicle emissions measurement solutions. Available as an on-board analyzer, as shown, or in a 19" rack mount configuration for test cell applications.


  • Features
  • Specifications
  • Accessories
  • Options
  • Resources
  • Heated sample system minimizes the loss of hydrocarbons prior to entering the Fuel Ionization Detector (FID) for analysis.
  • Fully contained sample conditioning after FID analysis, removes remaining heavy hydrocarbons, thereby minimizing contamination of the optical analyzers.
  • Proprietary NDUV measures NO and NO2 separately and simultaneously.
  • Sample pumps operate at constant volume, regardless of ambient pressure, ensuring that transport times are independent of altitude.
  • Calibration utilities make for easy setup to zero calibrate, span and audit all gases, perform leak tests and purge the system.
  • Test setup utility offers the user maximum control over test parameters, detection levels and calculation limits.
  • Post processor time aligns data and calculates real time mass emissions, raw emission concentrations and fuel economy.
  • Shock resistant design meets MIL STD 810F for shock and vibration.
Ambient operating temperature: 0°C to 45°C
Storage temperature: -40°C to 60°C
Sample flow rate: 8 SLPM
Data rate: 1 Hz
Warm up time: 60 minutes at 20°C ambient
Power requirement: 12VDC, 70A during warm up, 30A at steady state
Dimensions: 36cm x 43cm x 55cm (HxWxD)
Weight: 35.4 kg (78 lbs)
Communications: 802.3 (10BaseT) and 802.3u (100BaseTX) wired, and 802.11b or 802.11g (DSSS) wireless Ethernet

 

Gas CO CO2 NO NO2 THC
Range 0-8% 0-20% 0-2500 ppm 0-500 ppm 0-100 ppmC 0-1000 ppmC 0-10,000 ppmC 0-40,000 ppmC
Resolution 10 ppm 0.01% 1 ppm 1 ppm 0.1 ppmC 1 ppmC 1 ppmC 10 ppmC
Accuracy ±3% rdg or ±50 ppm ±3% rdg or ±0.1% ±3% rdg or ±15 ppm ±3% rdg or ±10 ppm ±2% rdg or ±5 ppmC ±2% rdg or ±5 ppmC ±2% rdg or ±25 ppmC ±2% rdg or ±100 ppmC
Linearity

Intercept < 0.5% of range
0.990 < slope < 1.01
SEE < 1% range
R2 > 0.998

 Intercept < 1% of range 0.985<slope<1.015 SEE < 1% range
R2 >0.998		 Intercept < 0.5% of range
0.990 < slope < 1.01
SEE < 1% range
R2 > 0.998
Repeatability ±2% rdg or ±20 ppm ±2% rdg or ±0.05% ±2% rdg or ±5 ppm ±2% rdg or ±5 ppm ±1% rdg or ±2 ppmC ±1% rdg or ±2 ppmC ±1% rdg or ±10 ppmC ±1% rdg or ±40 ppmC
Noise ±20 ppm ±0.02% ±2 ppm ±2 ppm ±2 ppmC ±2 ppmC ±10 ppmC ±40 ppmC
Span Drift ±2% rdg or ±20 ppm ±2% rdg or ±0.1% ±2% rdg or ±20 ppm ±10 ppm ±1% rdg or ±3 ppmC ±1% rdg or ±3 ppmC ±1% rdg or ±15 ppmC ±1% rdg or ±60 ppmC
Zero Drift ±0.005% or ±50 ppm ±0.1% ±10 ppm ±10 ppm ±5 ppmC ±5 ppmC ±10 ppmC ±20 ppmC
Response Time T90<3 sec T90<3 sec T90<2 sec T90<2 sec T90<2 sec T90<2 sec T90<2sec T90<2 sec
Flow Rate 2 LPM 2LPM 3 LPM 3LPM 2 LPM 2 LPM 2 LPM 2 LPM
Data Rate 0.833 Hz 0.833 Hz up to 4 Hz up to 4 Hz up to 4 Hz up to 4 Hz up to 4 Hz up to 4 Hz

 

The DS comes complete with an Accessories Kit. Mouse over the part number for an image of the item. Replacement parts can be ordered through your SEMTECH sales representative. For regular maintenance items, a complete annual consumables kit has been assembled for your convenience, shown at the bottom of this list.

Accessory Kit
Part Number 9296-043
Kit Includes:

Consumables Kit
 Part Number  9296-237
Kit Includes:

  • Heated Sample Line: Length specified at the time of purchase.
  • Global Positioning System: Overlay emissions data with route and elevation information.
  • Weather Probe Shield: Protects the probe without interfering with the probe's data.
  • Vehicle Interface: Heavy duty SAE-J1708 / SAE-J1939 / SAE-J1587 VI modules and Light duty OBD-II VI modules are available.
  • Environmental Enclosure: Protects the system in harsh environments.
  • Event Marker: Mark start and end points for events with a digital trigger.
  • Auxiliary Break-Out Box: Connect an external RPM probe or other digital inputs to the DS, with data that is time aligned with the emissions measurements.
  • Analog I/O Break-Out Box: Customize DAC data with up to 3 analog inputs, and 8 analog outputs with a 0-10V range.
  • Power Supply: A 12VDC power supply with either 120VAC or 220VAC input, either as a rack mount or a portable unit.
  • Power Splitter Cable: For Heavy Duty 12VDC, this cable allows the simultaneous connection of DS, PPMD, power supply and battery.
  • SENSOR Tech-CT: Post processing application providing in-use compliance test reports, formatted for EPA submission.