Why use EXAIR’s Digital Flow Meters

Since air compressors use a lot of electricity to make compressed air, it is important to use the compressed air as efficiently as possible. EXAIR has six simple steps to optimize your compressed air system. Following these steps will help you to cut electrical costs, reduce overhead, and improve your bottom line. In this blog, I will cover the first step – Measure the air consumption to find sources that use a lot of compressed air.

Information is important to diagnose wasteful and problematic areas within your compressed air system. To measure air consumption, flow meters are used to find the volume or mass of compressed air per unit of time. Flow rates are very useful data points to find problems like leaks, over-use in blow-offs, waste calculations, and comparison analysis.

There are many different types of flow meters. Many of them entail a breakdown of your current compressed air lines by cutting, welding, or dismantling for installation. This will add cost in downtime and maintenance staff. But, not with the EXAIR Digital Flowmeters. In this blog, I will share the features and benefits of the Digital Flowmeters including options for you to start measuring and optimizing your compressed air system in Step 1.

Overall, it only takes a few minutes to install and start measuring. The installation kit comes with a drill bit and a drill guide to properly locate the two holes on the pipe. The Digital Flowmeter uses a clamp to mount to the pipe and to seal the area around the probes. Once it is powered, the unit is ready to measure the air flow inside the pipe with a large LED display. The display can be customized to show flow readings in three different units; SCFM, M3/hr or M3/min; and, it can display the Daily Usage and Cumulative Usage.

To get started, the EXAIR Digital Flowmeter is a thermal dispersion device that can accurately measure compressed air flows. They use two sensing probes for comparative analysis. One probe is a temperature sensing probe, and the other is a flow-sensing probe. By comparing these, the Digital Flowmeter can measure precisely the mass air flow without needing to be recalibrated. They are a cost-effective, accurate, and simple way to measure compressed air flows.

EXAIR stocks a large volume of Digital Flowmeters to ship same day for U.S. and Canadian customers. We also offer a 30-day unconditional guarantee to try them out. We stock meters for pipe diameters from ½” NPT to 4″ NPT Schedule 40 black pipe. EXAIR can also offers flow meters up to 8″ NPT black pipe; copper pipes with diameters from 3/4″ to 4″, and aluminum pipes with diameters ranging from 40mm to 101mm. If you have another type of piping for your compressed air system, you can give us the material, O.D. or I.D., and wall thickness. We may still be able to get a Digital Flowmeter for you.

For measuring, all the units come standard with a 4 – 20mA analog output. Per your request, we can change this signal to a serial output for RS-485 or Ethernet connections. What more can we offer with the EXAIR Digital Flowmeter? Options. Options upgrade the flow meters to better suit your application. Here is a list below:

USB Data Logger: This option allows for a recording of the flow information. With a software download, you can setup the USB Data Logger to record the flows from once a second (roughly 9 hours of storage) to every 12 hours. After the data points are recorded, you can then download the information into the software to review. Then the information can be uploaded into an Excel program to do further analysis.

Summing Remote: With compressed air pipes running along the ceiling and walls, reading the Digital Flowmeter may be difficult. The Summing Remote has a 50-foot (15 meter) cable to bring the LED display into viewing. The Summing Remote is powered by the Digital Flowmeter, and it can be positioned at eye level, inside managers’ rooms, or around large equipment for monitoring.

Wireless Capability: Our latest Digital Flowmeter now has wireless capabilities. They use a Zigbee® communications to pick up flow readings from other flow meters and the Gateway. The Gateway can detect over 100 Digital Flowmeters in your facility. From the Gateway, the information is transferred through a LAN. You can record and analyze the flow information from each meter on the network with our EXAIR® Logger Software. You can set limits to send warnings when your compressed air system is using too much or too little of compressed air. This technology makes it very easy for measuring your compressed air system in the entire facility without having to be there.

Hot Tap Digital Flowmeter: This option is a great way to install a Digital Flowmeter to the pipe without shutting down the compressed air line. We offer this option for 2″ and larger flow meters for steel and copper pipes. It gives a quick and easy way to attach if you have a 24-hour operation or a critical process that needs to continue to run.

Pressure Sensing Digital Flowmeter: If you would like to know the compressed air flow and the air pressure, this option will be able to do this. They are available with the Digital Flowmeters for steel and copper pipes that are 2″ and larger, and for the aluminum piping that is 50mm and larger. This option can display pressure units in either PSI or Bar right on the same LED display that shows the flow readings.

When you need to analyze your pneumatic components, flow is an important point in diagnosing the overall “health” of your compressed air system. The EXAIR Digital Flowmeter can give you that important data point. With optimization, you can cut your energy consumption, improve pneumatic efficiencies, and save yourself money. This blog is an overview of Step 1 of six steps. You may have more questions; and, that is great! You can find them in other EXAIR blogs, or you can contact an Application Engineer at EXAIR.

Jordan Shouse
Application Engineer

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