Skip to content
Krohne Flow Meter

OPTIFLUX 6400

Hygienic electromagnetic flowmeter with Bluetooth on-site verification for demanding liquid applications.

The OPTIFLUX 6400 is an electromagnetic flowmeter engineered for advanced hygienic applications, offering reliable liquid flow measurement with wireless on-site verification via Bluetooth. Available as compact (C) or field-mounted (F) versions, it combines multiple analogue, discrete and digital outputs including HART for flexible integration. Backed by custody transfer, Ex and hygienic certifications (FDA, 3A, EHEDG), it delivers accuracy and compliance across sanitary and industrial processes.

Specifications

Product type
Flowmeter
Product family name
OPTIFLUX
Product positioning
For advanced hygienic applications and wireless on-site verification
Product variants
OPTIFLUX 6400 C - Compact version OPTIFLUX 6400 F - Field-mounted version
Measurement principle
Electromagnetic
Measured media
Liquids
Ambient temperature
-40...+60°C / -40...+140°F Up to +65°C / +149°F with fan
Process pressure
max. 40 barg/580 psig
Process temperature
-40…+140°C/-40…+284°F
Outlet run
2D
Certificates/Approvals Custody transfer (CT)
AGA, API, MI-002, MI-005, OIML R117, OIML R137
Certificates/Approvals Ex
ATEX, IECEx, NEPSI
Certificates/Approvals Hygienic
FDA, 3A, EHEDG, EC 1935/2004, EC2023/2006
NAMUR compliance
NE 107, NE 21, NE 43, NE 53, NE 131
Analogue outputs
up to 3 x 4…20 mA
Discrete outputs
Limit switches, Pulse, Frequency, Status
Digital outputs
HART®, Bluetooth®

Enquire about this product

Pricing, availability, lead times and technical support — direct from our engineers.

Flow Measurement — talk to our engineers

Flowmeters, controllers and accessories for every process