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Home
About
Why Specify AABC
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Hall of Fame
Outstanding Service Award
AABC Timeline
Quality Assurance
News & Updates
Join AABC
AABC Member Benefits
Certification
Member Locator
US Members
Canadian Members
International Members
ACG Members
Recruitment
Job Posting
Publications
National Standards for Total System Balance
Technician Training Manual
Kahoe Test & Balance
Equation Quick Guide
AABC Annual Meeting
Registration
Program
Activities
Professional Development
2026 Fall AABC TAB Technology Showcase
TAB Talk Webinars
TAB Journal
TAB Lunch & Learn
Endorsed Training
Connect with AABC
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Industry Partner Benefits
Advertise in TAB Journal
Webinar Sponsorship
Annual Sponsorship Opportunities
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Home
About
Why Specify AABC
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Equation Quick Guide
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2026 Fall AABC TAB Technology Showcase
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AABC TAB Talk Sept. 2024 Quiz: Tackling the Challenges of Repeatable Ultra-Low Flow Measurements
Step
1
of
11
9%
Name
(Required)
First
Last
Email
(Required)
How did you find this webinar?
(Required)
Search Engine or Internet Ad
Social Media (LinkedIn)
Email Marketing
Other
The goal of the Case Study of the COVID-19 pathogen elimination project was to:
(Required)
Test airflow efficiency
Prove or disprove manufacturer equipment specifications
Measure temperature changes
Install air purification devices
The original scope of work included measuring and recording airflows for:
(Required)
2 outlets at 50 CFM and 1 inlet at 200 CFM
3 outlets at 60 CFM and 1 inlet at 250 CFM
4 outlets at 75 CFM and 1 inlet at 300 CFM
5 outlets at 100 CFM and 1 inlet at 400 CFM
The actual recorded CFM values during the project were:
(Required)
Above 75 CFM
Between 50-75 CFM
Below 10 CFM
Exactly 300 CFM
One of the key challenges in ultra-low flow measurements is:
(Required)
Inconsistent airflow direction
Incorrect equipment placement
Repeatability and consistent results
Difficulty in temperature regulation
Repeatability in measurements refers to:
(Required)
Adjusting airflow speeds consistently
Achieving consistent results across multiple tests
Recording temperature changes
Changing capture hoods during testing
The CH-8D capture hood with the flow range adjustment plate can measure as low as:
(Required)
15 to 20 CFM
4 to 5 CFM
30 to 40 CFM
60 to 70 CFM
Area reduction in capture hoods helps maintain:
(Required)
Lower air velocity for accurate readings
Higher velocity for more accurate measurement of ultra-low flows
Constant air temperature
More space for large volume measurements
Foil-shaped velocity probes in airflow capture hoods are used to:
(Required)
Increase airflow pressure
Measure air temperature
Create a certain velocity pressure at a given air velocity
Increase hood durability
The area of the CH-8D low-flow capture hood can be reduced to:
(Required)
0.05 sq ft with the flow range adjustment plate
0.1 sq ft using extra equipment
0.3 sq ft for high airflow rates
0.75 sq ft with additional filters
The area of the CH-8D low-flow capture hood can be reduced to:
(Required)
0.05 sq ft with the flow range adjustment plate
0.1 sq ft using extra equipment
0.3 sq ft for high airflow rates
0.75 sq ft with additional filters
Δ
