LD 500_SHORT BAL_V2.03 EN Page 8 of 20
6. Leakage detection
This chapter describes the best use of the device in practice.
Leakage detection procedure
The following procedure should be performed in the company on a periodic basis to consistently keep
the leakage rate to a minimum. The aim should be a sustainable leakage rate of 5 to 10 % as one-time
detection and elimination does not permanently reduce the leakage rate and new leakages will occur
again afterwards.
Tip:
To determine the ideal time, the use of a volume flow sensor (VA500) in the main pipe behind the
tank is recommended. At least one week (Monday to Sunday) is recommended as the measurement
period. If an LD 510 is purchased, the volume flow sensor can be connected to it. During production
stops, the volume flow profile shows the leakage rate. If the threshold value is exceeded, leak detec-
tion can be contracted.
The volume flow measurement can also be used to validate the result of the leak detection and elimi-
nation, as this must reduce the volume flow during stoppages.
Possible causes of leakage:
Generally, leakages can be found at the connection elements in the compressed air system.
• Leaking couplings and hose clamps
• Leaking screw and flange compressors
• Porous/defective hoses
• Porous/defective seals of tools and machines
• Faulty steam traps
• Leaking or incorrectly installed dryer, filter and maintenance units
• etc.