ENDRESS+HAUSER  9B2B80-AAAACA1W0W1

• The measuring principle is unaffected by gas composition
• Inline flowmeter for wet biogas, digester and landfill gas under fluctuating process conditions

• Multivariable device: flow, temperature and methane
• Medium temperature: 0 to 80 °C (32 to 176 °F)
• Process pressure: 0.7 to 11 bar a (10.2 to 159 psi a)
• Loop-powered technology
• Robust two-chamber housing
• Plant safety: worldwide approvals

• Integrated real-time methane fraction measurement
• Optimized for low pressure gas – specialized sensor design
• No additional pressure loss – full bore design
• Process transparency – diagnostic capability
• Convenient device wiring – separate connection compartment
• Safe operation – no need to open the device due to display with touch control, background lighting
• Integrated verification – Heartbeat TechnologyTM

A Proline Prosonic Flow ultrasonic flowmeter measures the flow rate of the passing fluid by using sensor pairs located on opposite sides of the meter body and at an angle so that one of the sensors in the pair is slightly mounted downstream. The design is non-invasive and does not have any moving parts.

The flow signal is established by alternating an acoustic signal between the sensor pairs and measuring the transit time of each transmission. Then utilizing the fact that sound travels faster with the flow versus against the flow, this differential time (D T) can be used to determine the fluids velocity between the sensors.

The volume flow rate is established by combining all the flow velocities determined by the sensor pairs with the cross sectional area of the meter body and extensive knowledge about fluid flow dynamics. The design of the sensors and their position ensures that only a short straight run of pipe upstream of the meter is required after typical flow obstructions such as bends in one or two planes.

Advance digital signal processing facilitates constant validation of the flow measurement reducing susceptibility to multiphase flow conditions and increases the reliability of the measurement.