Sierra RedySmart Thermal Mass Flow Meters
Sierra RedySmart Thermal Mass Flow Meters

Sierra RedySmart Thermal Mass Flow Meters

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Combining superior physics, high reliability, and unparalleled flexibility, RedySmart stands apart from competitive offerings. The RedySmart thermal mass flow meters & controllers are MEMS-based (Micro-Electro-Mechanical System) technology to complement our SmartTrak® capillary-based mass flow meters & gas controllers. RedySmart thermal mass flow devices contain no moving parts and are unaffected by upstream temperature and pressure fluctuations, resulting in exceptional accuracy and repeatability.

With a compact footprint, easy integration onto a cost-effective gas mixing block, and a wide array of communications protocols, Sierra can produce a mass flow meter or controller to meet your specific requirements no-drift CMOS (Complementary Metal Oxide Semiconductor) sensor.

Our Lifetime No-Drift Sensor Warranty is made possible because RedySmart employs high-precision MEMS (Micro-Electro-Mechanical Systems) technology utilizing an advanced, ultra-stable no-drift CMOS (Complementary Metal Oxide Semiconductor) sensor.

The use of MEMS techniques allows both electronic circuits and mechanical devices to be manufactured on a silicon chip, similar to the process used for integrated circuits.

Sierra RedySmart Benefits

  • Lifetime no-drift sensor warranty – if drift occurs, the instrument will be repaired or replaced free of charge
  • MEMS (Micro-Electro-Mechanical Systems) with ultra-stable no-drift CMOS (Complementary Metal Oxide Semiconductor) sensor
  • Ideal for OEM Applications-optimized for BioPharm/Burner Control
  • Modular-customize to needs. An easy-connect communication and power cable system has been designed for ultimate flexibility
  • Precision Valve – a precision electromagnetic control valve allows the valve seat to assume the exact height above the valve orifice necessary to maintain flow to the set point
  • Built-in display-mass flow, totalizer, units, set point
  • Human & Systems Interface-local display readout, configure in field
  • Fast Set Point Control- response times as fast as +/-80ms
  • Advanced Calibration, NIST-Traceable. Each unit is calibrated over its entire flow range using real gas to assure accuracy and repeatability over the life of a device
  • Communications- Human & System Interface. An available local display readout communicates key flow data while each device can be configured in the field with a free software app


  • Air, N2, O2 are standard. Other non-toxic, non-corrosive gases are available upon request.
  • Accuracy of +/- 1.0% of the full scale
  • High Accuracy up to ± 0.3% of full scale ±0.5% of reading
  • Repeatability of +/- 0.2% of the full scale
  • Flow ranges from 0 to 500 pm (nlpm)
  • Pressure 3 – 160 psia (0.2 – 11 bara)
  • Gas/ambient temperature 32 – 122°F (0 – 50°C)
  • Response time:Meter (GSM): ± 80ms(3); Controller (GSC): ± 500ms(3)
  • 24 Vdc (18 – 30 Vdc), 15 Vdc on request
  • All devices have a digital Modbus RTU and analog interface standard.
  • CE approved


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