Introduction
The Rheonik RHM 30 Coriolis Mass Flow Sensor delivers high-precision mass flow measurement across demanding industrial applications, featuring ±0.1% accuracy, a wide flow range up to 900 kg/min, and robust performance under extreme pressures up to 462 bar and temperatures from cryogenic to +350°C. Engineered with corrosion-resistant materials and flexible process connections, it ensures reliable operation in oil & gas, chemical processing, and high-performance fluid systems.
- Flow Measurement Range: Engineered for precision mass flow measurement across a wide operating envelope from 10 kg/min up to 900 kg/min, ensuring stable and repeatable performance in both low-flow and high-capacity process conditions.
- Pressure Rating: Designed to operate under high-pressure environments with a maximum allowable working pressure of up to 462 bar (6700 psi), making it suitable for critical applications in oil & gas, chemical processing, and high-pressure fluid systems.
- Operating Temperature Range: Capable of reliable operation across extreme thermal conditions ranging from -196°C (-321°F) to +350°C (662°F), supporting cryogenic processes as well as high-temperature industrial applications without compromising measurement integrity.
- Measurement Accuracy: Delivers high-precision flow measurement with an accuracy of ±0.1% of rate, ensuring superior process control, reduced uncertainty, and compliance with stringent industrial and custody transfer requirements.
- Wetted Materials Construction: Available in a range of high-performance, corrosion-resistant materials, including Stainless Steel 316L / 316Ti, Alloy C22 (2.4602), Super Duplex (1.4410), and Tantalum (UNS R05200), enabling compatibility with aggressive, corrosive, and hazardous media.
- Process Connection Options: Configurable with robust process connections ranging from 2″ up to 3″, ensuring seamless integration into existing pipeline systems and facilitating installation flexibility across diverse industrial setups.
General Specification
| Nominal Flow (Qnom)* | 800 kg/min (1763.7 lb/min) |
| Maximum Flow (Qmax)* | 900 kg/min (1984.2 lb/min) |
| Typical Minimum Flow (Qmin)* | 10 kg/min (22.1 lb/min) |
| Serial Tube / Single Path | Flow rates Qmax, Qnom and Qmin for “serial” sensors will be 50% of the above-listed parallel/dual path version. |
| Operating Temperature | Fluid temperature range options cover applications from -196°C to +350°C (-320°F to +662°F). For integral transmitter versions, please refer to the transmitter datasheet |
| Ambient Temperature | -50°C to +80°C (-60°F to +180°F) (standard) |
| Pressure Ratings | Up to 462 bar / 6701 psi – dependent upon material |
| Electrical Connection Sensor w/o Integral Transmitter |
M20 x 1.5 standard cable entry for JM, SM terminal box versions |
| Sensor Enclosure Materials |
Stainless steel 304 (standard), SS 316 (optional) |
| Enclosure Type | Protection class IP66, NEMA 4X (standard), IP66/67, NEMA 4X/6 (optional) |
| Wetted Materials |
1.4571 (SS 316Ti), 1.4410 (SuperDuplex), 2.4602 (Alloy C22) – standard |
| Process Connections | Nearly any – the Rheonik AnyPipeFit Commitment. Consult the factory for types/sizes not listed in this data sheet on the Mechanical Construction pages |
| Pressure Rating Compliance |
Europe – PED: Module A2, Module B3.1+C2 |
| Certifications and Approvals |
ATEX / IECEx Approvals for Zone 0, 1, 2 (details see page 13) |
| Testing and Inspection | All sensors are hydro tested, calibrated and supplied with a traceable calibration certificate. Customized calibration and testing services are available |
| Project Documentation and QA, Services |
Rheonik offers a full set of services for large and complex engineering projects.
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| Options |
Enclosure heating for high temperature applications |
Pressure Drop
At Qnom, the pressure drop across a parallel tube sensor will be approximately 1-3 bar (15-44 psi) for H2O. Sensors can be operated at higher flow rates, but the pressure drop will be higher. Qmin is the recommended lowest flow rate. Sensors will measure flow rates lower than Qmin, but uncertainty will increase beyond 0.5 % of the rate.
The flow specifications above relate to standard pressure, parallel tube, and manifold sensor versions. Models with higher pressure ratings have increased wall thickness and will have higher pressure drops.
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