The CDI Meters 5400 Compressed Air Flow Meter features a thermal mass design, gauging the flow rate of compressed air and nitrogen via the heat required to maintain the differential between its probes. The CDI 5400 is built to operate accurately up to 200psig, with a clamp-design that projects two probes within the selected piping through 3/16in drilled holes, streamlining the installation process (no welding required) .

Weather resistant materials and inbuilt surge protection mean low maintenance and reduced labor. In addition to an easy to read LED display, the CDI 5400 offers streamlined navigation. The user is able to utilize a single button on the front of the meter to alternate between rate, daily usage and cumulative usage, as well as select a default display option, change units of measurement, and reset totals. The CDI 5400 has an optional eight banks of memory for continuous logging of flow history, with a one million+ sample capacity per bank. Optional RS-485 output for networking is also available .

The CDI 5400 comes with a wall-plug DC supply for 110 to 230V AC main with a 6ft cable plus a 14ft extension cable. Alternatively the user can hardwire the meter to a 24VDC supply. The CDI 5400 features an inbuilt milliamp output, and is shipped with a jumper to power it directly from the flow meter's DC power supply .

The CDI 5400 comes with a standard three year warranty. Optional pressure sensing is available for enhanced monitoring capabilities. The larger size range (50mm to 8in) makes it suitable for larger pipe applications compared to the CDI 5200 .