9G5B

By means of ultrasonic sensors offset‑mounted at downstream positions, the measuring device detects the flow velocity of the medium passing through the measuring tube. It features a design with no pressure loss and no moving parts. The flow signal is calculated by alternately measuring the one‑way transit time of sound waves between sensors. The principle is as follows: the propagation speed of sound waves increases in the downstream direction and decreases in the upstream direction. The resulting transit‑time difference (∆t) is used to determine the medium flow velocity between the sensors. The volumetric flow rate is obtained by multiplying the sum of flow velocities measured by each sensor pair by the cross‑sectional area of the measuring tube, with full consideration of fluid‑dynamic effects. The mechanical design and arrangement of the sensors ensure that only a short upstream straight pipe length is required downstream of common pipe obstructions (e.g. elbows installed in one or two planes). Advanced digital signal processing combined with innovative sensor design enables stable calculation of flow signals. This combination mitigates the impact of multi‑phase flow conditions (wet and variable gas conditions) and improves measurement reliability.

Industrial Gas Measurement

Prosonic Flow G is widely used for various gas measurements. It delivers reliable flow measurement even in applications with wet gas and fluctuating gas properties and compositions. The pressure‑resistant sensor housing is equipped with a rupture disc to mitigate safety risks. The innovative remote‑mount transmitter design ensures maximum installation flexibility and highest operational safety under demanding process conditions. Heartbeat Technology guarantees compliance and sustained process safety. • Measuring principle independent of gas composition • High‑accuracy measurement of natural gas and process gas in chemical and oil & gas industries