Specs at a glance
Max. measurement error
Volume flow (standard):
‐ ±1.5 % o.r. for 3 to 30 m/s (9.84 to 98.4 ft/s)
‐ ±3 % o.r. for 1 to 3 m/s (3.28 to 9.84 ft/s)
Volume flow (option):
‐ ±0.1 % o.f.s. for 0.3 to 1 m/s (0.98 to 3.28 ft/s)
‐ ±1.5 % o.r. for 1 to 30 m/s (3.28 to 98.4 ft/s)

Measuring range
Standard: 1 to 30 m/s (3.28 to 98.4 ft/s)
Option: 0.3 to 30 m/s (0.98 to 98.4 ft/s)

Medium temperature range
0 to +80 °C (+32 to +176 °F)

Max. process pressure
11 bar a (159 psi a)

Wetted materials
Sensor: 1.4404/1.4435 (316L)
Transducer: HNBR
Temperature sensor (option): AFM 34

See all specifications
Field of application
Prosonic Flow B 200 is the specialist for accurate and reliable measurement of wet biogas and digester gas,even under fluctuating process conditions. With its unique integrated real-time methane fraction analysis, Prosonic Flow B 200 enables continuous measurement and monitoring of gas flow as well as gas quality. In addition to efficient process control and energy balancing, Heartbeat Technology enables compliance and process safety at all times.

The measuring principle is unaffected by gas composition

Inline flowmeter designed for wet biogas and digester gas under fluctuating process conditions.

Device properties:

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 dual-compartment housing

Plant safety: worldwide approvals

Benefits
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 Technology.