KROHNE, Inc.

OPTIFLUX 4400 Electromagnetic flowmeter

OPTIFLUX 4400 Electromagnetic flowmeter

Electromagnetic flowmeter for safety instrumented systems (SIS) and high-accuracy requirements

• Certified for safety applications up to SIL 2/3, with automated partial proof test capability for extended proof test intervals
• Best-in-class diagnostic test interval incl. fault response time of only 2 minutes
• SIL 2/3 up to DN600 / 24"; non-SIL up to DN2000 / 80" (larger on request)
• Pulse, frequency, status, 4…20 mA, HART®7

The OPTIFLUX 4400 electromagnetic flowmeter (EMF) is developed in accordance with IEC 61508 for safety-related applications up to safety integrity level (SIL) 2/3. It features automated partial proof testing capabilities, which allows to extend the time interval between full proof tests and increase plant uptime in safety instrumented systems (SIS)

Next to safety applications, the OPTIFLUX 4400 is particularly suitable for process applications with high accuracy requirements and difficult flow conditions such as pulsating and turbulent flow. Due to its wide selection of lining and electrode materials it can well be used for flow measurement and dosing of chemicals and corrosive liquids such as acids. Utilising the EMF's improved conductivity measurement, operators can also monitor a defined range of conductivity.

Product highlights

• Automated partial proof testing capability for extended full proof test intervals
• Integrated conductivity measurement
• Enhanced diagnostic package:
• Compliant with NAMUR NE 107
• Diagnostic test interval incl. fault response time of only 2 minutes: alert issued if meter runs out of spec
• Detects gas bubbles, solids, electrode corrosion and deposits on the electrodes, conductivity changes, an empty or partially filled pipe, a disturbed flow profile, external magnetic fields, etc.
• Redundant data storage
• Real-time clock for logging events
• User-friendly coloured display for status indication
• Ease of installation and device set-up:
• Optimised device menu: reduced menu items for quick commissioning
• Available with patented "virtual reference" option: cost-saving installation without grounding rings (in non-SIL applications)
• High measuring accuracy and long-term stability: measuring error of only ±0.2% of measured value ±1 mm/s
• Wide range of liner and electrode materials
• Approved for use in hazardous areas: ATEX, IECEx db eb

Typical applications

General

• Safety Instrumented Systems (SIL 2/3)
• Applications with high accuracy requirements