KROHNE – 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 and hydrogen 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.

Features & Options

• 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
• Optional transducer materials: Stainless steel / composite or Inconel for hydrogen and oxygen service
  • User-friendly parameterisation, monitoring and on-site verification
  • Extensive sensor and process diagnostics
  • Via HART^® using the OPTICHECK DTM
  • Verification report about device status with one click
• Largely independent of gas density and composition
• Full bore design: No moving parts, no wear, no pressure loss
• Compact or field-mounted version

General information

Product type	Flowmeter
Product family name	OPTISONIC
Product positioning	For natural gas, process gas and utility gas applications
Measurement principle	Ultrasonic
Measured media	Gases, Steam

Operating conditions

Process pressure	max. 431 barg/ 6266 psig
Process temperature	-40…+180°C/ -40…+356°F

Materials

Measuring tube

Austenitic stainless steel (1.4404/316L), Carbon steel (A106 Gr.B), Carbon steel (A333 Gr. 6)

Process connections

Flange connections	EN (1092-1): DN50…600 ASME (B 16.5): 2…24″
Other connections	Welded connections (on request)

Approvals/Standards

Certificates/Approvals Ex	ATEX, cQPSus, IECEx, NEPSI, INMETRO, FM, CSA, PESO
NAMUR compliance	NE 21, NE 43, NE 53, NE 80

Communication

Analogue outputs	4…20 mA
Discrete outputs	Limit switches, Pulse, Frequency, Status
Digital outputs	FOUNDATION™ Fieldbus, HART®, Modbus RTU