www.driair.com | www.rti-pbe.com
(800) 521-9200
@RTiPBE
@rti_pbe
RTi-QAT Quality Air Test Kit w/ Digital Hygrometer
Rev. 9/2017
Proper Hookup for Testing Membrane Units
Membrane units sold in the market have not been able to keep up with the air used when spraying
paint. Because of this we are recommending doing the compressed air humidity test like this:
1.
When testing membrane drying units you should use this setup to test Compressed Air
Humidity.
2.
Set the pressure on the QAT regulator @
50 PSI
.
3.
Hook the spray gun as shown and have the pressure on the gun set at what the painter uses to
spray most of their paint finishes.
4.
Pull the trigger on the gun and check the reading on the digital read out as the air is flowing
through the gun.
5.
Watch reading until it quits moving. Paint Companies want less than 10% on solvent and less
than 3% on waterborne finishes
This reading will give you an accurate reading of Compressed Air Humidity produced while spraying
paint.
Most units we have tested in the field range between 5
‐
15% suppression from incoming Compressed Air
Humidity into the membrane dryer. Average shop readings are around 38%, meaning these units are not
performing to meet Paint Company Specs.
ALL FINISHES PERFORM BEST @ 0
‐
3% COMPRESSED AIR HUMIDITY
PROPER HOOKUP FOR TESTING MEMBRANE UNITS
Membrane units sold in the market have not been able to keep up with the air used when spraying paint. Because of
this we are recommending doing the compressed air humidity test. Refer to the previous pages on how to test.
This reading will give you an accurate reading of compressed air humidity that is produced while spraying paint.
Most units we have tested in the field range from 5-15% suppression from incoming CAH into the membrane dryer.
Average shop reading are around 38%, meaning these units are not performing to meet paint company specifications.
