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Hydrogen Flow Meter
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Coriolis Flow Meters

Coriolis Mass Flow Meter – RHM 04

Rheonik Messtechnik GmbH

  • Accurately measure flow rates down to 50 g/min
  • Compact design with minimal pipeline footprint
  • Approved for use in hazardous areas
  • SS 304 Stainless steel enclosure, SS 316L optional
  • Integral and remote transmitter versions available

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Description Vendor

The Rheonik RHM 04 is a compact Coriolis mass flow meter designed for accurate measurement of mass flow, density, and temperature in liquid and gas applications. The sensor uses Rheonik’s Omega tube torsion oscillator technology to provide stable measurement performance in demanding industrial environments. The RHM 04 is designed for high-pressure applications, supporting pressures up to 1,401 bar and medium temperatures from -196°C to +350°C. The meter is suitable for demanding applications including hydrogen refuelling stations, hydrogen gas dispensing, and high-pressure industrial flow measurement where accurate and reliable measurement is required.

Use Cases

  • High-pressure chemical injection and well control
  • Hydrogen refueling stations and gas dispensing
  • General process monitoring of corrosive or viscous media

Capabilities

  • Typical measuring range up to 18 kg/min (39.68 lb/min)
  • Pressure ratings up to 1401 bar (20320 psi)
  • Temperature ratings from -196 to +350 C (-320 to +622°F) - extended on request
  • Mass flow uncertainty down to 0.05 %
  • Repeatability down to 0.05 %
  • Accurately measure flow rates down to 50 g/min
Rheonik Messtechnik GmbH

Rheonik Messtechnik GmbH is recognized as the world leader in high-pressure Coriolis mass flow meters for hydrogen dispensing, having worked with all major hydrogen suppliers since the outset of the hydrogen fuel cell industry to produce flow meters capable of handling the extreme pressures associated with hydrogen distribution and dispensing. The company's patented Omega tube design enables its Coriolis flow meters to operate at pressures up to 1,722 bar with precision of 0.05%-0.1%, having developed the first Coriolis flow meters rated to 1,000 bar specifically for hydrogen refueling, approved to OIML R139 and MI002/OIML R137 standards for legal metrology compliance at hydrogen stations. The vast majority of hydrogen dispensers worldwide are fitted with Rheonik flow meters, which reliably measure hydrogen refueling at pressures up to 700 bar for cars and 350 bar for trucks/buses at temperatures of -40 degrees C, with a large measurement turndown handling the flow regime from high flow at fill start to low flow at fill end, and the ability to measure hydrogen in both liquid and gas states. Rheonik continues supplying hydrogen flow measurement technology essential to accurate, certified refueling infrastructure worldwide.

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