Endress+Hauser Proline Promass Q 300 Coriolis Flowmeter
The Endress+Hauser Proline Promass Q 300 is a high-performance Coriolis flowmeter designed for demanding applications where accurate mass flow, volume flow and density measurement is critical. It is particularly suited to custody transfer, density measurement and liquid applications with entrained gas.
Promass Q 300 combines advanced Coriolis measurement technology with a compact, easily accessible transmitter. Its design provides high measurement performance under changing process conditions while offering flexible operation, diagnostics and system integration.
High-Accuracy Coriolis Flow Measurement
Promass Q 300 is designed for applications requiring high measurement accuracy.
Key measurement performance includes:
Liquid mass flow: ±0.10% standard
Liquid mass flow: ±0.05% with PremiumCal option
Liquid volume flow: ±0.10%
Gas mass flow: ±0.25%
Liquid density: ±0.0002 g/cm³ standard
Liquid density: ±0.0001 g/cm³ with option
The high accuracy makes Promass Q 300 particularly suitable for applications where measurement uncertainty directly affects product accounting, process efficiency or quality control.
Optimized for Custody Transfer
A major application area for Promass Q 300 is custody transfer measurement.
Its high measurement performance for mass flow, volume flow and density makes it suitable for applications where accurate and traceable measurement of transferred products is required.
Typical custody transfer applications include:
Hydrocarbon measurement
Liquid transfer
Product loading and unloading
Oil and gas measurement
Fiscal measurement systems
Metering skids
Transfer stations
The exact custody transfer approval and configuration depend on the selected instrument version and application requirements.
Multi-Frequency Technology for Entrained Gas
One of the most important features of Promass Q is its Multi-Frequency Technology (MFT).
The sensor is specifically optimized for liquids containing entrained gas, a challenging condition for Coriolis flowmeters.
Entrained gas can occur due to:
Gas bubbles in liquid
Changing process conditions
Pumping conditions
Product transfer
Two-phase flow tendencies
Promass Q's multi-frequency measurement technology helps maintain reliable measurement performance under these challenging conditions.
Accurate Density Measurement
Promass Q 300 provides highly accurate density measurement in addition to flow measurement.
This enables the instrument to provide multiple process variables from one measurement point:
Mass flow
Volume flow
Corrected volume flow
Density
Reference density
Temperature
Concentration
The optional density accuracy can reach ±0.0001 g/cm³, making Promass Q 300 particularly attractive for applications where density is an important process or commercial parameter.
Wide Measuring Range
Promass Q 300 is available in nominal diameters from:
DN25 to DN250 (1 to 10")
The maximum measuring range reaches:
2,400,000 kg/h (88,183 lb/min).
This allows the instrument to cover both medium-sized and large-capacity industrial flow measurement applications.
Low Pressure Loss and High Turndown
The Promass Q sensor is designed to achieve high turndown through low pressure loss and a low zero point.
This helps the flowmeter maintain useful measurement performance across changing flow conditions, making it suitable for processes where operating flow rates can vary considerably.
Compact and Easily Accessible Transmitter
The Promass Q 300 features a compact dual-compartment transmitter housing designed for convenient operation and maintenance.
Key transmitter features include:
Up to 3 configurable I/Os
Backlit display
Touch control
WLAN access
Remote display option
Flexible communication
Access to process and diagnostic information
The transmitter is designed for easy access from one side, which can simplify operation in compact process installations.
Flexible System Integration
Promass Q 300 can be integrated into modern plant automation and measurement systems through a range of communication technologies and configurable I/O options.
This supports integration with:
PLC systems
DCS systems
SCADA systems
Metering systems
Plant asset management systems
The freely configurable I/O architecture provides flexibility when adapting the flowmeter to different process automation requirements.
Wide Process Temperature Range
Promass Q 300 supports demanding process temperature conditions.
The standard medium temperature range is:
-50 to +205 °C (-58 to +401 °F)
A cryogenic option supports:
-196 to +150 °C (-321 to +302 °F).
This makes Promass Q 300 suitable for both conventional process applications and selected cryogenic flow measurement applications.
High Process Pressure Capability
The maximum process pressure is:
PN 100 / Class 600 / 63K.
The measuring tube is manufactured from 1.4404 (316/316L) stainless steel, with stainless-steel construction also available for cryogenic applications.
Space-Saving Installation
The Coriolis measuring principle means Promass Q 300 does not require conventional inlet and outlet straight pipe runs.
This can simplify piping design and reduce the required installation space, particularly in metering skids and compact process systems.
Heartbeat Technology
Promass Q 300 incorporates Endress+Hauser Heartbeat Technology for integrated verification and diagnostics.
This supports measurement verification and helps users monitor instrument performance without unnecessary removal of the flowmeter from the process.
For critical measurement applications such as custody transfer, integrated verification can also contribute to improved measurement confidence and maintenance planning.
Typical Applications
The Endress+Hauser Proline Promass Q 300 is suitable for:
Custody transfer measurement
High-accuracy liquid flow measurement
Density measurement
Hydrocarbon measurement
Oil and gas
Liquid product transfer
Metering skids
Fiscal flow measurement
Liquids with entrained gas
Process applications with changing flow conditions
Cryogenic liquid measurement
Process monitoring and control
Key Features
High-performance Coriolis flowmeter
Optimized for custody transfer
Excellent density measurement performance
Multi-Frequency Technology (MFT)
Optimized for liquids with entrained gas
Liquid mass flow accuracy up to ±0.05%
Density accuracy up to ±0.0001 g/cm³
Gas mass flow accuracy ±0.25%
Measuring range up to 2,400,000 kg/h
Nominal diameter DN25–DN250
Process pressure up to PN100 / Class 600 / 63K
Standard medium temperature -50 to +205 °C
Optional cryogenic temperature down to -196 °C
Compact dual-compartment transmitter
Up to 3 configurable I/Os
Touch display and WLAN access
Remote display available
No conventional inlet/outlet straight pipe runs
Heartbeat Technology
