Bottom line tbl 100 fish finder manual2/15/2023 ![]() It is also very important to recognize the difference between an ambient and entering wet bulb test. Depending on how the “cooling tower” psychrometers are assembled, they may be used to measure either a wet or dry bulb temperature. This is technically incorrect as a psychrometer measures the wet bulb and dry bulb temperatures while those instruments widely used today measure only a single temperature. It is common to call the air temperature measurement device used in cooling tower tests a psychrometer. This does not mean that a data acquisition system cannot be used in conjunction with grade level psychrometers. A Class B test uses a data acquisition system and usually finds the psychrometers hung in an array over the air inlet face of the tower. In general, a Class A test is one conducted using mercury-in-glass thermometers and grade level psychrometers. SPX Cooling reserves the right to witness any testing where contract compliance is the issue.Ĭurrently, it is common to refer to tests as either Class A or B. If guaranteed performance compliance is to be determined by a test, SPX Cooling will consider other agencies but reserves the right of approval. Where customers want to use the services of third party agencies to conduct the testing, SPX supports the use of CTI Licensed Agencies. ![]()
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