The Optiflux 4400 electromagnetic flowmeter is certified for safety applications up to SIL 2/3 and developed in accordance with IEC 61508. A key capability of the Optiflux 4400 is its automated partial proof test function, which can extend the time interval between full proof tests, helping users increase plant uptime. The flowmeter performs its diagnostic test, including fault response time, in two minutes. If the meter operates outside its specified range, it issues an alert. Enhanced diagnostics compliant with NAMUR NE 107 identify process and device conditions. In addition to its safety-related capabilities, the Optiflux 4400 provides a measuring error of ±0.2% of measured value ±1 mm/s. Integrated conductivity measurement, redundant data storage and a real-time clock for event logging further support process monitoring and verification requirements. The flowmeter is approved for hazardous-area use with ATEX and IECEx db eb approvals. It supports pulse, frequency, status, 4-20mA and HART outputs.