How often should electromagnetic flowmeters be calibrated? LGF series calibration intervals and standards

Electromagnetic flowmeter calibration intervals are essential for maintaining the measurement accuracy of LGF series instruments. Calibration schedules follow national metrology standards:

• Initial calibration: All new flowmeters require factory or laboratory calibration before commissioning
• Routine recalibration: Standard interval is 12 months, reduced to 6 months for critical applications
• Custody transfer applications: Flowmeters used for fiscal measurement require 6-12 month calibration cycles
• Process control only: Non-critical applications may extend calibration intervals to 24 months

Calibration methods include wet calibration using traceable flow standards and dry calibration using electronic simulation. Wet calibration provides higher accuracy for precision applications, while dry calibration offers cost-effective verification for large diameter meters. Key parameters verified include zero stability, span accuracy, and linearity. Select ISO 17025 accredited calibration laboratories to ensure traceability and compliance. Regular calibration maintains measurement integrity and meets regulatory requirements in industrial and commercial applications.