Sage Rio

  • Accuracy​
    High Accuracy: 0.5% 
  • Turndown​
    Turndown of 100 to 1
  • Sensitivity​
    Low-End Sensitivity
  • Mass Flow
    Direct Mass Flow 
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The Sage Rio Thermal Mass Flow Meter provides the same levels of performance found in the popular Sage Prime with the added hazardous area approval including Class I Division 1 Groups B, C, D and ATEX Zone 1 Flameproof approval. The Rio features a bright, high contrast, photo-emissive OLED (Organic LED) display of Flow Rate, Total and Temperature in an explosion proof, dual-sided NEMA 4X (IP66) enclosure. Provides isolated 4-20 mA and pulsed output along with Modbus compliant RS485 or HART communications.

General Specification
Style Inline and Insertion
Sensor Two reference grade platinum RTD clad in 316SS sheath
Material Wetted metal components: 316SS
Turndown 100 to 1
Resolution 1000 to 1
Pressure Up to 500 psi (For higher pressure contact us)
Repeatability  0.2 % 
Accuracy Up to 0.5%
Electronics enclosure NEMA 4X enclosure
Display High contrast photo-emissive OLED graphical display (Flow rate, Totalizer, Temperature)
Low end sensitivity 5 SFPM
Field calibration check Yes – Digital system allows raw signal validation (milli-watts)
Communication Modbus® compliant RS485 RTU or optional HART® communications
Approvals UL, cUL, Class I, Division 1,Groups B,C, D T6


Ex II2 G Exd IIB+H2 T6 Gb

Note: T6 Rating is suitable for gases with ignition temperatures as low as 185˚F (85˚C)


Output 4-20mA
Totalizer 24VDC pulse for Totalized value
Gas temperature range -Standard -40 ° TO 200 °F (93 °C) Optional to 300 °F (149 °C) and 450°F (232 °C)

Stack gas monitoring

Vent air flow meter

Steel production 

Natural gas measurement 

Compressed air flow measurement

Power plants

Pulp and paper industry

Combustion control in boiler

Valve testing