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