EXAIR's Digital Flowmeter is the easy way to monitor compressed air consumption and waste! Th e digital display shows the exact amount of compressed air being used, making it easy to identify costly leaks or inefficient air products.. A person using the ULD need only aim it in the direction of a suspected leak. When a leak is present, an audible tone can be heared with the use of the headphones, and the LED dispaly will light. Testing the various unions, pipes, valves and fittings of a complete installation can be done quickly and effectively at distances up to 20' (6.1m) away! Plants that aren't maintained can easily waste up to 30% of the compressor output through leaks that go undetected. Saving the wasted compressed air reduces overall operating costs. Digital Flowmeter, with data logging capability available, is the easy way to monitor compressed air consumption and waste! The digital display shows the exact amount of compressed air being used, making it easy to identify costly leaks or inefficient air products. No cutting, welding, adjustments or calibration are ever required.If the unit needs to be removed, blocking rings are available. Available for measuring air flow in SCFM on schedule 40 iron pipe from 1/2"-6" diameter. Air flow meters for copper pipe up to 4" are also available.