What is used to determine compressed air cleanliness?
What is used to determine compressed air cleanliness?
A . Needle pressure gauge
B . Psychrometer
C . Blotter test
D . Profilometer
Answer: D
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Profilometer is an instrument to measure the roughness of a blasted surface.. This answer is wrong.
Blotter test is used to determine Compressed air cleanliness
The answer should be blotter test . Would this be correct
This answer is wrong. A profilometer checks profile.