Introduction
The Rheonik RHM 100 Coriolis Mass Flow Sensor has the following key features:
- Flow Range: Engineered for high-capacity industrial applications, the RHM 100 supports a wide mass flow range from 120 kg/min up to 12,000 kg/min, ensuring accurate measurement across both moderate and high-flow process conditions.
- Pressure Rating: Designed to operate under demanding process environments, the sensor withstands pressures up to 237 bar (3437 psi), making it suitable for high-pressure fluid handling systems.
- Temperature Range: Built for extreme thermal conditions, the RHM 100 performs reliably within a wide temperature range from -196°C (-321°F) to +210°C (+410°F), supporting cryogenic as well as high-temperature applications.
- Measurement Accuracy: Delivers high-precision mass flow measurement with an accuracy of ±0.1% of rate, ensuring consistent and repeatable performance for critical process control and monitoring.
- Material Construction: Available in a range of corrosion-resistant and high-strength materials, including Stainless Steel 316L / 316Ti, Super Duplex (1.4410), and Alloy C22 (2.4602), providing compatibility with aggressive and hazardous media.
- Process Connections: Configurable with large-diameter process connections starting from 8 inches and above, enabling seamless integration into high-capacity piping systems and industrial process lines.
General Specifications
| Nominal Flow (Qnom)* | 10000 kg/min (22046 lb/min) |
| Maximum Flow (Qmax)* | 12000 kg/min (26456 lb/min) |
| Typical Minimum Flow (Qmin)* | 150 kg/min (330 lb/min) |
| Operating Temperature | Fluid temperature range options cover applications from -196°C to 210°C (-320°F to 410°F). For integral transmitter versions, please refer to the transmitter datasheet |
| Ambient Temperature | -50°C to 80°C (-58°F to 176°F) |
| Pressure Ratings | Up to 237 bar / 3437 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 with Standard Temperature Range (Option N1/NA); IP65 / NEMA 4 for Extended Temperature Ranges (Option E2 / E3) |
| Wetted Materials |
1.4571 (SS 316Ti), 1.4410 (SuperDuplex) – standard |
| Process Connections |
Nearly any – the Rheonik AnyPipeFit Commitment. |
| Pressure Rating Compliance |
Europe – PED: Module B3.1+C2 |
| Certifications and Approvals |
ATEX / IECEx Approvals for Zone 0, 1 (details see page 11) |
| 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.
|
| Options |
Enclosure heating for high temperature applications |
* At Qnom, the pressure drop across a parallel tube sensor will be approximately 0.4 bar (6 psi) for H2O. Sensors can be operated at higher flow rates up to Qmax, but the pressure drop will be higher. Typical Minimum Flow Qmin is the recommended lowest flow rate for an accurate measurement. Sensors will measure flow rates lower than Qmin, but uncertainty will increase beyond 1 % of the rate.
The flow rate 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.
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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