Hot system in ASTM D892 | Noria Message Boards

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yonroMember

Hallo

I have a problem with my foaming testing rig I made based on ASTM D892. In the hot system when I blew the oil with 94mL/min compressed air it seems that I can't get a constant flow measurement with my volume meter.

Does anyone care to explain to me why is that fenomena happen???

regards

6/19/092:14 AM

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yonroMember

dear abdalla

I have already set the compressor to blow about 89-99mL/min in the cold condition and I get a constant measurement, but when I use the same setting in hot condition, I can't get a constant flow measurement at my volume meter, sometimes it raise but sometime it stop, it even sucked back..

Is it have connections with the density of the compressed air??
Because in high temp the air seems to have lower density..

yonroMember

hallo

Do we have to use wet test meter to measure total air volume from diffuser???

Can we use another tools??

Thx

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