Ultrasonic flowmeters

For process and utility applications, energy and custody transfer (CT) measurements

Comprehensive portfolio for gases, liquids and steam
High temperature and cryogenic versions, variants for high pressure and higher viscosities
Various designs: From clamp-on devices to multipath inline flowmeters

OPTISONIC 3400 C Ultrasonic flowmeter – Compact version

OPTISONIC 3400

Ultrasonic flowmeter for liquid process applications

Accurate 3-path meter: large dynamic range, maintenance-free, no pressure loss
Cryogenic (-200°C/-328°F) and extended temperature (+250°C/+482°F) versions; viscosities up to over 1000 cSt
Flange: DN25…3000 / 1…120", max. PN200 / ASME Cl 1500; also weld-ends
3 x 4…20 mA, HART^®, Modbus, FF, Profibus-PA/DP

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OPTISONIC 3400 District Heating

Ultrasonic flowmeter for district heating applications

3-path meter for thermal energy measurement, heated water and cold
CT: OIML R75, MID MI-004 (Class 2, 3)
Flange: DN25…2000 / 1…80", max. PN40 / ASME Cl 300
Max. +180°C / +356°F

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OPTISONIC 4400 HP

Ultrasonic flowmeter for high pressure liquids

2-path meter for flow measurement of condensate, high pressure feedwater, spray water or water injection
Operating pressure up to 490 bar / 7107 psi
Max. DN1000 / 40", up to ASME Cl 4500
3 x 4…20 mA, HART^®7, Modbus, FF, Profibus-PA/DP

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Ultrasonic flowmeter for high temperature liquids

OPTISONIC 4400 HT

Ultrasonic flowmeter for high temperature liquids

2-path meter for flow measurement of thermal oil, boiler feed water, crudes and hot feed flows in refineries
Up to +600°C / +1112°F
Flange: max. DN1000 / 40"
3 x 4…20 mA, HART^®7, Modbus, FF, Profibus-PA/DP

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OPTISONIC 6300 P

Ultrasonic clamp-on flowmeter for temporary flow measurement of liquids

Portable, battery-powered meter used to collect additional flow data or for cost-effective on-site verification of inline flowmeters

For pipes DN15…4000 / ½…160"; up to +120°C / +248°F

Portable signal converter with integrated data logger

Commissioning, monitoring and data analysis via a mobile smart device using the OPTISONIC 6300 P mobile app (for Android or iOS) in combination with a USB cable or wireless Bluetooth connection^®

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OPTISONIC 6300

Ultrasonic clamp-on flowmeter for flow measurement of liquids

Stationary device, for installation at any location without process interruption or need to cut pipes
Up to +200°C / +392°F
Robust stainless steel sensor rail for pipes DN15…4000 / ½…160"
4…20 mA, HART^®7, Modbus, FF, Profibus-PA/DP

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OPTISONIC 7300 C Ultrasonic gas flowmeter – Compact version with flange

OPTISONIC 7300

Ultrasonic flowmeter for natural gas, hydrogen, process gas and utility gas applications

2-path meter, for standard volume flow metering, independent of media properties
No maintenance, no pressure loss, large dynamic range
Flange: DN50…1000 / 2…40", max. PN450 / ASME Cl 2500; also weld-in connections
3 x 4…20 mA, HART^®, Modbus, FF

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OPTISONIC 7300 C Biogas Ultrasonic flowmeter

OPTISONIC 7300 Biogas

Ultrasonic flowmeter for biogas, landfill and sewage gas applications

1- or 2-path meter for low-pressure biogas (dry or wet) with a high CO₂ content
Integrated gas volume correction and methane content measurement
Flange: DN50…300 / 2…12", max. PN10 / ASME Cl 150
Large turndown ratio (100:1)

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OPTISONIC 8300 ultrasonic flowmeter from KROHNE - Version for high-temperature gases and superheated steam

OPTISONIC 8300

Ultrasonic flowmeter for cryogenic or high-temperature gases and superheated steam

2-path meter with optional mass flow and enthalpy calculation
Engineered for extreme temperatures: from measurement of BOG and other gases down to -200°C / -328°F to steam and boiler monitoring up to +593°C / +1100°F
DN100…1000 / 4…40"; max. PN250 / ASME Cl 2500
Large turndown ratio (60:1)

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ALTOSONIC 5

Ultrasonic flowmeter for custody transfer (CT) measurement in upstream and midstream applications

Multipath inline meter for crudes, refined products, cryogenic media and chemicals
CT: OIML R117, API compliant
Flange: 4…24"; max. ASME Cl 600
-200…+250°C / -328…+482°F

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Product update

ALTOSONIC V12

Ultrasonic flowmeter for custody transfer (CT) flow measurement of natural gas, hydrogen and other gases

Fully compliant with AGA, ISO 17089-1, AGA 9, OIML R137 class 0.5, MI-002, etc.
Suitable for various gases - from natural gas via gas mixtures to pure hydrogen
Dedicated diagnostic chords to detect bottom fouling
From DN100 / 4" to max. DN750 / 30"; up to 450 bar / 6,525 psi
Available with KROHNE Care™ diagnostic expert system featuring an integrated web server for 24/7 performance monitoring

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