1. Continuous Particulate Training Workshop
NIST Traceable Volumetric Flow Rate, Temperature and Pressure Calibration/Audit Devices for FRM and Continuous Ambient Monitors
TAMS
Continuous Particulate Training Workshop
October , 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
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 mmHg
< +/- 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 Venturi #1 0.1 - 1.2Lpm Operable Range -30 to 40°C
Flow Range 0.1 to 30.0Lpm
Venturi # Lpm
Venturi # Lpm
Venturi # Lpm
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
$120 per year