Wednesday, May 9, 2012

How to find out how many CFM your compressor delivers

Here's one of the most used Compressed Air formulas
you should keep on hand...
How to find how many CFM
your air compressor delivers.


Follow these steps to find how many
CFM Your Air Compressor delivers


1. STOP the compressor unit

2. CLOSE the outlet valve on the tank/air receiver

3. DRAIN the condensate from air receiver until there is 0 PSIG -then close the drain valve

4. NOTE THE TIME- minute & second. Then START THE UNIT.
When unit stops/unloads – then NOTE THE TIME again – minute & seconds. Convert minutes into seconds and then total number of seconds it takes between START and STOP/UNLOAD.

 5. NOTE the GUAGE PSIG reading

6. NOTE the Air Receiver/Tank GALLON SIZE

7. USE THIS FORMULA:

TANK GALLONS x .538* x PSIG divided by SECONDS
 
EXAMPLE:
You have an
80 gallon tank, your total seconds timed were 189 and you noted 175 PSIG.

80 multiplied by .536 = 42.88
42.88 multiplied by
175 (example PSIG) = 7504.00
7504.00 divided by
189 (total seconds)= 39.71 CFM delivered

You now know that your air compressor is delivering 39.71 CFM

Your Response to this evaluation should be to compare this number with what your air compressor manufacturer says your CFM should be and evaluate how efficiently your compressor is running.

      Tommy McGuire
 McGuire Air Compressors, Inc.
"Real People with Real Compressor Experience"

1-888-229-9999



4 comments:

Unknown said...

I have been curios about our air compressor. I'm trying to learn everything I can about them. I'm seeing if http://unitedengines.com/equipment/uec/index-uec.cfm/ can give me some more insight.

Cooperfreer said...

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