Endress+Hauser Proline Promass Q 300 Coiolis Flowmeter

Endress+Hauser Proline Promass Q 300 Coiolis Flowmeter

Trust the Promass Q 300 for custody transfer applications in your processing facility.

  • Heartbeat technology 
  • Highly accurate for volume flow, flow and density 


Endress+Hauser’s Proline Promass Q 300 Coiolis Flowmeter features a compact transmitter which is incredibly flexible in terms of operation and system integration. This device offers remote display, connectivity options, and access from one side. The Promass Q 300 also utilizes Endress+Hauser’s Heartbeat Technology to ensure a safe process. 


The preferred choice for custody transfer uses, the Promass Q 300 has been optimized for liquid applications where entrained gas is known to be present. This device provides exceptional measurement accuracy for volume flow, density, and mass flow. 

Endress+Hauser Proline Promass Q 300 Coiolis Flowmeter Product Benefits

Optimized performance for liquids with entrained gas

Limited complexity

Space saving installation

Heartbeat Technology provides integrated verification

Full access to diagnostic information

Fewer measuring points

Made for Success

With the highest measurement performance for custody transfer even under tough processing conditions the Promass Q 300 was designed with your process in mind. These devices were designed to help your system run efficiently and include: 

  • Compact dual-compartment housing with up to 3 I/Os
  • Density: measurement error ±0.1 kg/m³ (opt.)
  • Remote display option
  • Mass / volume flow: measurement error ±0.05 % (opt.) (PremiumCal)
  • High turndown due to low pressure loss/zero point
  • Backlit display with touch control and WLAN access


Rodem specializes in custom sanitary process fabrications and solutions. Discuss your full project needs with a Rodem team member to see how we can help you build the exact system you need.

Endress+Hauser Proline Promass Q 300 Coiolis Flowmeter Videos