Ultrasonic Flow meter OPTISONIC 7300

The OPTISONIC 7300 is a universal 2-path ultrasonic gas flowmeter for process and utility gas measurements in oil and gas refineries or the chemical or petrochemical industries. It is also suitable for non-custody transfer natural gas applications or applications with (compressed) air, mixed or flue gases (up to +180°C / +356°F). Using the transit time differential measuring principle, the OPTISONIC 7300 delivers high performance over a wide flow range (up to DN600 / 24″, turndown ratio: 100:1). Its patented titanium transducers are perfectly focused, equalizing process fluctuations and avoiding acoustic feedback.

Bi-directional flow measurement over a wide dynamic range (turndown ratio: 100:1)

Integrated volume correction to standard conditions (using pressure and temperature measurement)

With current inputs for external pressure and temperature sensors

NACE-approved grade 29 titanium transducers for maximum corrosion resistance

Largely independent of gas density and composition

Full bore design: No moving parts, no wear, no pressure loss

Compact or field-mounted version





Process metering and control of gases, air flows etc.


Oil and gas industry

Natural gas production, transport, storage and distribution

Underground gas storages (UGS)

Non-custody transfer (CT) gas applications


Chemical, petrochemical and other process industries

Process and hydrocarbon gases

Natural gas and compressed air consumption and other auxiliary service and supply line applications



Measuring tube  

Austenitic stainless steel (1.4404/316L),

Carbon steel (A106 Gr.B),

Carbon steel  (A333 Gr. 6)





Process Connection



Flange connections EN (1092-1): DN50…600


ASME (B 16.5): 2…24″


Pressure rating

(EN 1092-1)




Pressure rating

(ASME B 16.5)


CL 2500#


Other connections


Welded connections

(on request)