KROHNE – OPTISONIC 3400 FLOW METER

The OPTISONIC 3400 is a 3-path ultrasonic inline flowmeter designed for a wide range of standard or more demanding process applications with homogeneous, non-viscous aqueous liquids as well as viscous fluids of up to over 1000 cSt. It is also the perfect choice for applications with cryogenic products (as low as -200°C / -328°F), media with extended temperature ranges (up to +250°C / +482°F) as well as low or extreme pressure ratings. The OPTISONIC 3400 offers a broad range of diameters – from DN25 / 1″ for dosing purposes to DN3000 / 120″ for water transportation pipelines.

Features & Options

• Bi-directional flow measurement over a wide dynamic range
• Various dedicated versions for many industrial applications with conductive or non-conductive liquids
• For extended process temperature ranges
• Low or extreme pressure ratings available
• No influence of scaling due to direct path configuration
• Optional heating jacket
• Full bore design: No moving parts, no wear, no pressure loss
• Various digital communication options
  • User-friendly parameterisation, monitoring and on-site verification
  • Extensive sensor and process diagnostics (incl. NE 107)
  • Via HART^® using the OPTICHECK DTM
  • Verification report about device status with one click
• Compact or field-mounted version (incl. cable length up to 30 m / 90 ft, optional IP68 rated)
• Suitable for use in Safety Instrumented Systems with SIL 2

General information

Product type	Flowmeter
Product family name	OPTISONIC
Product positioning	For liquid process applications
Product variants	OPTISONIC 3400 – Standard version in compact (C) or field housing (F) OPTISONIC 3400 HV – High viscosity version OPTISONIC 3400 LT – Low-temperature version OPTISONIC 3400 XXT – Extended temperature version
Measurement principle	Ultrasonic
Measured media	Liquids

Operating conditions

Process pressure	max. 180 barg/ 2600 psig
Process temperature	-200…+250°C/ -328…+482°F

Materials

Measuring tube

Austenitic stainless steel (1.4404/316L)

Process connections

Flange connections

EN (1092-1): DN25…3000 ASME (B 16.5): 1…120″ JIS (B 2220): 25…300A

Approvals/Standards

Certificates/Approvals Ex	ATEX, cQPSus, IECEx, NEPSI, INMETRO, CSA, UKEX
Certificates/Approvals Nuclear	Nuclear qualification on request (e.g. acc. to ASME III, RCC-M/E, etc.)
Certificates/Approvals Others	CRN
Certificates/Approvals Safety	SIL 2
NAMUR compliance	NE 107, 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®, Profibus-PA, Profibus-DP, Modbus RTU