Dwyer DP3 Wireless Differential Pressure Module

Red and Black go together like fish and a river. Dwyer Instruments developed a new wireless differential pressure module that is a joy to use.

It is compact, highly accurate,

auto-ranging, and ideal for use in low-flow applications. The DP3 Wireless Differential Pressure Module measures down to 10-thousandths of an inch and can connect to Dwyer’s airflow grid for velocity measurements.

I think the DP3 is more for the commercial and air balancing market rather than residential. Not to say a residential guy couldn’t use it, but it all depends on what they are trying to accomplish.

Dwyer DP3 Wireless Differential Pressure Module
Dwyer DP3 Wireless Differential Pressure Module

The DP3 requires using Dwyer’s supplied android device for communications. In fact, the Series DP3, combined with the Dwyer Mobile Meter® application software (ncilink.com/MobileMeter) lets you view pressure drop across filters, static pressure in ducts, and velocity pressures from pitot tubes or airflow stations.

The device accomplishes communication using built-in Bluetooth Low Energy (BLE).

What’s really great is that you can add other air balancing Dwyer devices to this communications tool.

Other cool features include an LED indicator and a rechargeable lithium-ion battery, which charges via mini-USB. The DP3 is small: it practically fits in the palm of your hand and has built-in magnets in case you need to set it aside.

Like other differential pressure modules, the DP3 has dual ports and calculates the pressure differences for any HVAC system pressure drops. It can also measure building pressures.

I didn’t throw it off the roof to see how durable it is, but it does seem tough.

There are areas on the DP3 that are rubberized for protection, but I would recommend not to abuse this instrument. You make the choice. I don’t think you’ll be disappointed.

For more information, visit the Dwyer Instruments page at ncilink.com/DwyerDP3.

— by Casey Contreras, NCI Field Coach, and Trainer