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TAMS Continuous Particulate Training Workshop October 21 - 24, 2003 BGI Instruments

NIST Traceable Volumetric Flow Rate, Temperature and Pressure Calibration/Audit Devices for FRM and Continuous Ambient Monitors. TAMS Continuous Particulate Training Workshop October 21 - 24, 2003 BGI Instruments. Introduction.

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TAMS Continuous Particulate Training Workshop October 21 - 24, 2003 BGI Instruments

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  1. NIST Traceable Volumetric Flow Rate, Temperature and Pressure Calibration/Audit Devices for FRM and Continuous Ambient Monitors TAMS Continuous Particulate Training Workshop October 21 - 24, 2003 BGI Instruments

  2. Introduction • Federal, State and Tribal AQ Agencies Require Flow Calibration and Audits on all Gravimetric Particulate Samplers and Continuous Monitors • Commercial Vendor Claim “Primary Flow” and “NIST Traceability” are Confusing • A NIST Traceable Volumetric Flow Rate, Ambient Temperature and Pressure Field Calibration/Audit Device Has Been Developed and Tested

  3. Investigation • NIST Primary Standard vs. Flow Transfer Standard • Requirements for a Field Calibrator • Current Methods Available • DeltaCal & TriCal NIST Traceable Calibrators Meet Requirements

  4. NIST Primary & EPA Flow Transfer Standards • NIST “PrimaryStandard” Flow Calibration Facility • Colorado Engineering Experiment Station (CEESI) • Titanium Vessels used for Gravimetric Analysis as the NIST Primary Standard • Pressurized, Evacuated and Weighed for Primary Volume. • NIST “Transfer Standard” • Flow Device Traceable to NIST (CEESI) Primary

  5. CEESI - NIST Primary Calibration Lab

  6. Priorities of a Field Calibrator NIST Transfer Standard, Accuracy to <2%to Primary Calibrator must be Field Usable to EPA FRM Specs Insensitive to Atmospheric Conditions Calibrator should not add artificial pressure to sampler to interfere with electronic flow controller Portable & Battery Powered Direct Reading of Flow Rate, Ambient Temperature, & Barometric Pressure RS232 Calibration Report-Digital Calibration Report

  7. “Flow Transfer Standard” Calibrators • Bubble Meter • Gilibrator™ (Wet) - (Excellent for Indoor Use) • Frictionless Piston - (Not Field Hardened, Dirty Piston) • Bios/DryCal/DC-Lite™ (Dry)- 3% low bias • Orifice- Quartz Tube - (Sensitive to Wind) • Streamline/Chinook™ (Dry) – adds system pressure, double of a Venturi • Venturi- - (Field Hardened with Gust Cap) • BGI DeltaCal (Dry) – flow, temperature & pressure

  8. DeltaCal Calibration Kit • DeltaCal • Measurements: • Barometric Pressure • Ambient Temperature • Filter Temperature • Volumetric Flow Rate • Digital Output for Recording Field Data • Software to Print Summary report

  9. Schematic Diagram of DeltaCal

  10. DeltaCal NIST Traceable Specifications • Operable Range –30 to 40°C • 2 to 20 aLPM Model DC 1 • 10 to 60 aLPM Model DC 100 • +/- 1% of NIST • Temp Sensor Range – 40 to 50°C • < +/- 0.5°C Difference to NIST • Pressure Range 400-800mmHg • < +/- 2mmHg of NIST

  11. Calibrator Software Screen Display Historical Record User Configurable All Readings in one Display Auto Resolution ASCII File Export Flow Statistics

  12. Summary Printed Report

  13. TriCal Calibrator • Operable Range -30 to 40°C • Flow Range 0.1 to 30.0Lpm • Venturi #10.1 - 1.2Lpm • Venturi #2 1.2 -6.0Lpm • Venturi #3 6.0 - 30Lpm • Barometric Pressure • Ambient Temperature • (Option) Filter Temperature

  14. Calibrating a Continuous PM Monitor • CPM Display

  15. BGI - NIST Certified Flow Calibration Laboratory < Insert photo of BGI Test Bench >

  16. Conclusions • BGI DeltaCal & TriCal are Flow Transfer Standards Directly Traceable to NIST Primary • Field Hardened Device with Low Pressure Drop and DeltaCal Includes Wind Gust Cap • Cost Includes 4 Measurements, Rather than just One $1695. • Affordable Re-Calibration by a Single Vendor $150. • US EPA Tested – Exclusive PEP PM2.5 Network & PM-Coarse Method Development Program

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