captainleaky
19-06-2009, 02:19 AM
Our company leak checks our refrigeration packages by using a combination of a digital pressure gauge and digital thermometer. our procedure goes as follows...
1. fill package with 300 psi nitrogen
2. let sit for two hours to equalize.
3. take pressure and temperature reading every hour for two hours.
4. enter the first and last readings of pressure and temp into a program that was developed by our refrigeration engineering dept. This program will tell you if the pressure drops more than the temperature which indicates a leak...
the problem is that during certain times the test quite often shows a leak when there is not one.
my feeling is that it is caused by atmospheric pressure such as a barometeric drop.
does anyone out there have any thoughts on this??
1. fill package with 300 psi nitrogen
2. let sit for two hours to equalize.
3. take pressure and temperature reading every hour for two hours.
4. enter the first and last readings of pressure and temp into a program that was developed by our refrigeration engineering dept. This program will tell you if the pressure drops more than the temperature which indicates a leak...
the problem is that during certain times the test quite often shows a leak when there is not one.
my feeling is that it is caused by atmospheric pressure such as a barometeric drop.
does anyone out there have any thoughts on this??