New Isolation Valve Assembly for Inline Flow Meters

Sage Metering announces an isolation valve assembly option for inline thermal mass flow meters, expanding its proven in-situ calibration verification capability beyond insertion-style meters. This new option (specify “W”) allows users to verify calibration while the meter remains in the line without interrupting service.

How It Works

The isolation valve assembly enables users to create a reproducible “no flow” (0 SCFM) condition. This configuration allows users to:

  • Remove the probe for inspection or cleaning
  • Conduct in-situ verification procedures
  • Compare current milliwatt (mW) readings with original factory calibration data
  • Verify calibration without returning the meter to the factory

Understanding the Technology

Sage Metering’s unique digital sensor method (versus the traditional drift-prone Wheatstone bridge) enables this unique verification capability. The technology provides:

  • Enhanced signal stability
  • Improved temperature compensation
  • Greater sensitivity to flow changes
  • Better resolution
  • Digital adjustment of operating ranges for specific process conditions

Options to Create  a “No Flow” Condition

To use the in-situ verification procedure, a “no flow” condition must be achieved. Sage offers several solutions to create this condition.

  • Use the new isolation valve assembly option (W)
  • Install a bypass pipe parallel to the flow meter
  • Conduct verification during planned maintenance

Sage inline flow meter with SVA05 isolation valve assembly option W

Benefits to Users

The in-situ calibration verification process:

  • Confirms original NIST traceable calibration
  • Verifies sensor cleanliness
  • Ensures no meter drift
  • Eliminates annual factory calibrations
  • Reduces maintenance costs
  • Maintains regulatory compliance

Meeting Industry Standards

This verification method supports the following:

  • EPA regulatory requirements
  • Environmental monitoring protocols
  • Quality assurance procedures
  • Process control standards

Contact Us

Contact Sage Metering today to learn more about the new isolation valve assembly option for inline flow meters or discuss your application requirements.