Announcement

Announcement Module
Collapse
No announcement yet.

Air Pressur Conversion - LPM to CFM (or ACFM)

Page Title Module
Move Remove Collapse
X
Conversation Detail Module
Collapse
  • Filter
  • Time
  • Show
Clear All
new posts

  • Air Pressur Conversion - LPM to CFM (or ACFM)

    Flow Rate Conversion [volume] sanity check...

    I'm trying to measure small volume CFM (or ACFM) through an air line under pressure.

    I have a liter/min flowmeter gauge. IF I convert the LPM to CFM
    on the conversion WWW site...is this ACFM or SCFM ? I'm assuming SCFM...but the conversion says just "CFM".

    Don't I have to factor in SCFM for my location (1-SCFM = about 1.064 ACFM for my location @ 75-deg F). Thanks !

  • #2
    Re: Air Pressur Conversion - LPM to CFM (or ACFM)

    Originally posted by airborn
    Flow Rate Conversion [volume] sanity check...

    I'm trying to measure small volume CFM (or ACFM) through an air line under pressure.

    I have a liter/min flowmeter gauge. IF I convert the LPM to CFM
    on the conversion WWW site...is this ACFM or SCFM ? I'm assuming SCFM...but the conversion says just "CFM".

    Don't I have to factor in SCFM for my location (1-SCFM = about 1.064 ACFM for my location @ 75-deg F). Thanks !
    You need to know what you are trying to measure and what your instrument actually measures. The volume of a gas is a function of temperature and pressure. A box that holds 1 cubic foot holds 28.3495 L; that is a simple volume conversion. However, the amount of gas in that box is complex; it is usually restated to standard temperature and pressure, and is really an air mass, disguised.

    Your problems are two fold:
    *Metric gas measures normally use "normal," a pressure of 101.325 kPa and 0 C, while foot based measures use 101.325 kPa and several (non!) "standard" temperatures which differ by industry. Do you know what "standard" in scfm means in your industry?

    *Compressed air volume is almost always measured as "free air" at the intake with corrections for pressure and temperature; it is NOT measured as a volume in the compressed state, but pressure is measured there. Do you know if your flow meter is calibrated to read equivalent free air or is it calibrated to flow at pressure?

    Finally, do you want flow at free air conditions or at pressure?

    Comment


    • #3
      Re: Air Pressur Conversion - LPM to CFM (or ACFM)

      what is mean by lpm

      Comment


      • #4
        Re: Air Pressur Conversion - LPM to CFM (or ACFM)

        Originally posted by Unregistered View Post
        what is mean by lpm
        I assume liters per minute (should be L/min)

        Comment


        • #5
          IN HVAC -CMH to liter

          how to convert in HVAC CMH to water quantity in liter

          Comment


          • #6
            Re: IN HVAC -CMH to liter

            Originally posted by Unregistered View Post
            how to convert in HVAC CMH to water quantity in liter
            depends on what CMH means. If it is cubic meters per hour (m/h is the proper symbol), there are 1000 L in 1 m.

            Comment


            • #7
              Re: Air Pressur Conversion - LPM to CFM (or ACFM)

              Originally posted by Unregistered View Post
              what is mean by lpm
              230lpm to cfm

              Comment


              • #8
                Re: Air Pressur Conversion - LPM to CFM (or ACFM)

                Originally posted by Unregistered View Post
                230lpm to cfm
                see post #2

                Comment

                Previously entered content was automatically saved. Restore or Discard.
                Auto-Saved
                x
                Insert: Thumbnail Small Medium Large Fullsize Remove  
                x
                x

                Please enter the six letters or digits that appear in the image below.

                Registration Image Refresh Image
                Working...
                X

                Debug Information