I have recieved a few calls and inquiries about measuring CFM with the AN100/200.
Some customers are needing clarification on using the right formulas when calcualting the area of their duct work prior to entering the respective area (value) in to the meter.
Please note:
If your duct is round- R2 (radius squared) x pie (3.14) divided by 144 (cubic conversion)
If your duct is square or rectabgle - L x W divided by 144 (cubic conversion)
Whatever value you get upon completion of each formula is what you would input into the meter as your area.
Best Regards,
Rashim Bradley
EXTECH Technical Support
Extech Instruments Corporation
285 Bear Hill Road
Waltham, MA 02451, USA
Direct: 781-890-7440 Ext. 183
Email: Rashim.Bradley@Extech.com
Make mine an Extech! TM