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#1
08-02-2011, 12:14 PM
 Unregistered Guest Posts: n/a
FLOW : LPM to PPM

I've got a mass flow meter that I need some help with it...

The flow meter reads in PPM, and my comparison standard reads in LPM.

How many LPM = 1 PPM?
#2
08-02-2011, 02:26 PM
 JohnS Double Ultimate Supreme Member Join Date: Dec 2007 Location: SE Michigan, USA Posts: 8,707 Rep Power: 17
Re: FLOW : LPM to PPM

Quote:
 Originally Posted by Unregistered I've got a mass flow meter that I need some help with it... The flow meter reads in PPM, and my comparison standard reads in LPM. How many LPM = 1 PPM?
PPM is normally used to mean parts per million, a ratio of one thing (very dilute) mixed in another. As a unit of flow I have no clue what it means.
#3
08-02-2011, 05:51 PM
 HerrWarum Supreme Member Join Date: May 2011 Location: MD, USA Posts: 303 Rep Power: 3
Re: FLOW : LPM to PPM

#4
08-02-2011, 06:12 PM
 JohnS Double Ultimate Supreme Member Join Date: Dec 2007 Location: SE Michigan, USA Posts: 8,707 Rep Power: 17
Re: FLOW : LPM to PPM

Quote:
 Originally Posted by HerrWarum
I got the liters per minute. The question is what is ppm as a flow???

pints per minute, pounds per minute, some other random abbreviation??
#5
08-03-2011, 02:24 AM
 Mrs X can't count, can't spell! Join Date: Feb 2006 Location: New Zealand Posts: 2,294 Rep Power: 11
Re: FLOW : LPM to PPM

OP, can you give us more information? - I'm used to mass flow meters measuring gas flow, but usually by weight (hence the "mass").
#6
08-03-2011, 04:52 AM
 Unregistered Guest Posts: n/a
Re: FLOW : LPM to PPM

Sorry guys... Pounds per minute.
#7
08-03-2011, 05:06 AM
 JohnS Double Ultimate Supreme Member Join Date: Dec 2007 Location: SE Michigan, USA Posts: 8,707 Rep Power: 17
Re: FLOW : LPM to PPM

Quote:
 Originally Posted by Unregistered Sorry guys... Pounds per minute.
And is LPM liters per minute?

If so, we need to know what the substance is as you are converting between mass and volume. Densities vary with conditions, so we also need temperature for liquid, and temperature and pressure for a gas.

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