Welcome to the comprehensive operations and instruction manual for the Sage Prime™ Thermal Gas Mass Flow Meters, specifically for the SIP and SRP models. Sage Metering, Inc. is dedicated to providing high-performance, NIST-traceable solutions for monitoring, measuring, and controlling gas mass flow across various industrial, commercial, and environmental applications.
About Sage Prime™ Flow Meters
The Sage Prime™ series offers direct mass flow measurement without the need for ancillary temperature or pressure transmitters. These meters are designed for high accuracy, exceptional turndown ratios, and low maintenance due to their lack of moving parts and negligible pressure drop. They are capable of measuring a wide range of gases and gas mixes.
Key Features and Benefits
- Direct Mass Flow Measurement
- High Accuracy and Repeatability
- Wide Turndown Ratio (100:1) and High Resolution
- Negligible Pressure Drop
- No Moving Parts for Durability
- Robust Industrial Enclosure with OLED Display
- Continuous Diagnostics for easy monitoring
- Modbus® compliant RS485 RTU communications
- Isolated 4-20 mA output
What This Manual Covers
This manual provides essential information for the proper installation, operation, and maintenance of your Sage Prime™ flow meter. It includes detailed sections on:
- Getting Started: Unpacking, maintenance, and calibration
- Installation and Mounting procedures
- Specifications and Principle of Operation
- Wiring diagrams for SIP and SRP models
- Diagnostics and Troubleshooting
- Warranty and Service Information
- Modbus Communication Protocols
- Technical Drawings and Hardware
Support and Resources
For further assistance, technical support, or to contact a factory representative, please visit the Sage Metering website:
You can also contact Sage Metering directly at 1-866-677-SAGE (7243).


