Semtech DS Portable Emissions Measuring System
- 1. SEMTECH® -DSOn Board, In-Use Emissions Analyzer Sinceit’sintroductionin2002,Sensors’SEMTECH-DShassetthestandardfor Portable Emissions Measurement Systems (PEMS). Capable of monitoring the raw exhaust from 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 regulatory 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. The DS comes complete with SENSOR Tech-PC, a powerful emissions software package, primarily intended for controlling the SEMTECH-DS and performing emissions calculations. Built-in flexibility with both digital and analog I/Os enables the user to interface with a number of auxiliary devices, and to set up the system in accordance with specific application needs. A wireless Ethernet connection can be used for communications between SENSOR Tech-PC and the SEMTECH-DS. Emissions Measurement Solutions
- 2. 2 SEMTECH-DS On Board, In-Use Emissions Analyzer System Features and Benefits Heated FID Sampling: The exhaust sample is maintained at 191°C, using a heated sample line, filter and pump, so as to minimize the loss of hydrocarbons prior to entering the FID chamber for analysis. Sample Conditioning: A compact sample conditioning system is completely contained within the unit, minimizing contamination of the analyzers. NO and NO2 measurement: Proprietary NDUV measures NO and NO2 separately and simultaneously. Pressure Compensation: Sample pumps operate at constant volume, regardless of ambient pressure, ensuring that transport times are independent of altitude. Calibration Utilities: Easy setup and interface 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. PostProcessor:Timealignsdataandcalculatesrealtimemassemissions, raw emission concentrations and fuel economy. Weather Probe: Actual weather information is required for precise humidity compensation. Shock Resistant Design: Meets MIL-STD 810F for shock and vibration. Sample Installations Span Screen of SENSOR Tech-PC Heavy Duty Truck Excavator Passenger Car Snowmobile
- 3. 3 SEMTECH-DS On Board, In-Use Emissions Analyzer Optional Accessories Heated Sample Line: Various length lines are available, which maintain the exhaust at 191°C. Global Positioning System: Overlay emissions data with route and elevation information. Vehicle Interface: Heavy duty SAE modules and light duty OBD-II modulesareavailable.VehicleECMparametersarerecordedwith the emissions data, with support for 10 different protocols. 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 supply with either 120VAC or 220VAC input is available, 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. SENSOR Tech-PC While collecting emissions test data, the user can monitor the system directly from the application software. System status information includes: System flow diagram, with real time temperatures• and pressures throughout the unit. System flags and warnings, for any parameter that• is out of normal range. Real time emissions data display, in tabular and• graphical formats. In addition to the graphing capabilities within SENSOR Tech-PC’s post processor, data is exported into csv format, for easy graphing and reporting. SENSOR Tech- CT post processing software is also available, providing in-use emissions compliance reports in the proper format to upload to the EPA’s Verify (CDX) web site. User Support As with all SEMTECH products, the DS comes with a wide range of customer support. Sensors’ Remote Support, powered by WebEx, enables our trained technicians to view your SEMTECH unit in real-time, to help answer your questions, diagnose issues, and evaluate data, without requiring any additional software. The SEMTECH Users’ Network, SUN, has a forum for users to share insights on best practices for in-use emissions testing, and to stay up to date with the latest software releases. Graphing Feature within the SENSOR Tech-PC Post Processor System Flow Diagram
- 4. Sensors, Inc. • 6812 State Rd. • Saline, Michigan 48176 • PH:(734) 429-2100 • FX:(734) 429-4080 • www.sensors-inc.com Sensors Europe GmbH • Feldheider Str. 60 • 40699 Erkrath • Germany • PH: +49 (0) 2104-14188-0 • FX: +49 (0) 2104-14188-14 SEMTECH-DS System Specifications Gas CO CO2 NO NO2 THC Range 0 - 8% 0 - 20% 0 - 2,500 ppm 0 - 500 ppm 0 - 100 ppmC 0 - 1,000 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% of reading or ± 50 ppm ±3% of reading or ± 0.1% ±3% of reading or ± 15 ppm ±3% of reading or ± 10 ppm ±2.0 % of reading or ±5 ppmC ±2.0 % of reading or ±5 ppmC ±2.0 % of reading or ±25 ppmC ±2.0 % of reading or ±100 ppmC Linearity Intercept ≤0.5 % of range 0.990 ≤Slope ≤1.01 SEE ≤1.0 % of range r2 ≥0.998 Intercept ≤1.0 % of range 0.985≤Slope ≤1.015 SEE ≤1.0 % of range r2 ≥0.998 Intercept ≤0.5 % of range 0.990 ≤Slope ≤1.01 SEE ≤1.0 % of range r2 ≥0.998 Repeatability ±2 % of reading or 20 ppm ±2 % of reading or ±0.05 % ±2 % of reading or 5 ppm ±2 % of reading or 5 ppm ±1.0 % of reading or ±2 ppmC ±1.0 % of reading or ±2 ppmC ±1.0 % of reading or ±10 ppmC ±1.0 % of reading or ±40 ppmC Noise ±20 ppm ±0.02% ± 2 ppm ± 2 ppm ± 2 ppmC ± 2 ppmC ± 10 ppmC ± 40 ppmC Span Drift ±2 % of reading or 20 ppm ±2 % of reading or 0.1 % ±2 % of reading or 20 ppm ± 10 ppm ±1.0 % of reading or 3 ppmC ±1.0 % of reading or 3 ppmC ±1.0 % of reading or 15 ppmC ±1.0 % of reading or 60 ppmC Zero Drift ±0.005 % (50 ppm) ±0.1 % ± 10 ppm ± 10 ppm ± 5 ppmC ± 5 ppmC ± 10 ppmC ± 20 ppmC Response Time T90 ≤ 3 seconds T90 ≤ 3 seconds T90 ≤ 2 seconds T90 ≤ 2 seconds T90 ≤ 2 seconds T90 ≤ 2 seconds T90 ≤ 2 seconds T90 ≤ 2 seconds Flow Rate 2 lpm 2 lpm 3 lpm 3 lpm 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 NOTE: Specifications are subject to change without no- tice. While due caution has been exercised in the produc- tion of this document, possible errors and omissions can occur. R 05/09 4 SEMTECH-DS On Board, In-Use Emissions Analyzer Ambient operating temperature: 0°C to 45°C Storage temperature: -40°C to 60°C Sample flow rate: 8 SLPM Sample rate: 1 Hz Warm up time: 60 minutes, at 20°C ambient Power requirements: 12VDC , 70A during warm-up, 30A at steady state Communications: 802.3 (10BaseT) and 802.3u (100BaseTX) wired, and 802.11b or 802.11g (DSSS) wireless Ethernet Chassis dimensions: 36cm x 43cm x 55cm (HxWxD) Weight: 35.4kg (78 lbs)