BSR/RESNET/ICC 380-202x, draft PDS-03 Comments Submitted

The following comments have been submitted:

Comment #1

Page Number: 38
Paragraph / Figure / Table / Note: 6.2.4
Comment Intent: Not an Objection
Comment Type: General


The small size of a vane anemometer with hood can increase resistance to airflow through the device and the mechanical ventilation system, therefore it is important that the device is sized appropriately for the intended airflow to be measured.

It is important to ensure that the airflow measured by the vane anemometer with hood is within the calibration range of the device so that the measurement is accurate.

The addition of Informative Note 73 is an important reminder to the technician that an airtight perimeter between the inlet/outlet terminal and the hood of a vane anemometer with hood can be difficult to achieve due to the asymmetrical distribution of force generated by the characteristic one-handed handle of the equipment (especially when compared to the two-handed handles of traditional airflow measurement devices such as passive/powered flow hoods). 

Proposed Change: Procedure to conduct airflow test. The vane anemometer with hood shall be sized to minimize air resistance induced by the equipment and the airflow measured shall be within the equipment calibration range. The flow capture element of the vane anemometer with hood shall be placed over inlet terminal, ensuring that an airtight perimeter seal has been created73.


73 (Informative Note) Exercise caution when using a vane anemometer with hood to conduct an airflow test as this equipment may be more susceptible to leaks between the hood and the inlet/outlet terminal perimeter due to their characteristic one-handed handle.