Roll over image to zoom in

Have a live application? Use our Flow Questionnaire and Rheonik Product Brochure to get started:

View ABLE Flow Questionnaire – Email back to [email protected]

View Rheonik Product Brochure

ABLE are Rheonik’s Exclusive Representative for Sales and Service in the UK and Ireland and can assist you and your customers in the following areas:

  • Assistance in meter sizing
  • Offer after sales support, service and re-calibration utilising our in-house expertise
  • Offer Coriolis Mass Flow Meter product training from our state-of-the-art training rig either in-person or via video call.

Further to the above, ABLE can offer custom solutions based on your individual requirements. Email us now at [email protected]

Rheonik RHM 20 Medium Coriolis Mass Flow Meter < 480 kg/min

ABLE Instruments are Rheonik’s Exclusive Representative for Sales and Service in the UK and Ireland, including the RHM 20 Medium Size Coriolis Mass Flow Meter. The RHM20 Flow Sensor, a 2-inch meter, is the epitome of precision and reliability in general-purpose flow measurement. Engineered to operate effortlessly without the need for frequent maintenance, this meter proves itself as a stalwart in liquid processing industries. With a blend of robustness, accuracy, and cost-effectiveness, the Rheonik RHM 20 leaves no room for compromise.

The RHM20 Coriolis Mass Flow Sensor is designed to handle an extensive range of flow rates, spanning from 1 kg/min to a substantial 480 kg/min. This versatile capacity makes it an ideal choice for industries where flow rates can vary significantly, ensuring it caters to a wide array of applications.

This meter thrives under pressure, with a capability to endure pressures of up to 185 bar (2683 psi). Even in extreme temperature conditions, ranging from a bone-chilling -50°C (-58°F) to a sweltering +210°C (410°F), the RHM 20 maintains its precision and functionality.


  • Range: 1 kg/min up to 480 kg/min
  • Pressure: up to 400 bar (5801 psi)
  • Temperature: -50°C (-58°F) up to +210°C (410°F)
  • Accuracy: 0.1 % of rate
  • Materials: SS 316L / SS 316Ti, Alloy C22 – 2.4602, Tantalum – UNS R05200, Super Duplex – 1.4410
  • Process Connection: 1″ up to 2″
  • Suitable for fiscal / custody transfer applications
  • Available in all exotic materials

Its remarkable accuracy, quantified at 0.1% of the rate, ensures that the data it provides is consistently reliable. Operators can rely on its measurements with confidence, minimising errors in their processes. The RHM 20’s construction is engineered for durability, crafted from high-quality materials, including SS 316L, SS 316Ti, Alloy C22 – 2.4602, Tantalum – UNS R05200, and Super Duplex – 1.4410. This diverse material selection ensures compatibility with various liquids and safeguards against corrosion, even in the harshest environments. Process connections ranging from 1″ to 2″ enhance its adaptability, allowing for seamless integration into existing systems and setups. The Rheonik RHM 20 Coriolis Mass Meter’s blend of reliability, precision, and affordability sets it apart, making it a cost-effective investment for industries seeking unparalleled flow measurement performance.

Have a particular application / project in mind? We’d welcome a call on +44 (0) 1189 169 420, or email us now at [email protected]

Why choose Rheonik Coriolis Mass Flow Meters? Unlike other Coriolis Meters, the patented Omega tube design of Rheonik Coriolis meters has solutions for operation up to 1722 bar (24,969 psi) line pressure at a precision of 0,05% and with renowned mechanical reliability. With highly accurate mass flow measurement performance and extreme capabilities, Rheonik meters are the ideal choice for many applications and quickly provide payback through improved product quality and greatly reduced maintenance. Whether used for transfer batching, process feed or control, Rheonik Coriolis Mass Flow Meters provide online precise flow and density measurement.

RHM 20 Specifications:

Nominal Flow (Qₙₒₘ)*
300 kg/min (661.4 lb/min)​
Maximum Flow (Qₘₐₓ)*
480 kg/min (1058.22 lb/min)
Typical Minimum Flow (Qₘᵢₙ)*
1 kg/min (2.2 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).
Ambient Temperature
-50 °C to +80 °C (-60 °F to +180 °F) (standard), versions available for installation in vacuum chamber (-260 °C / -430 °F) or oven (up to +210 °C / +410 °F) (optional)
Pressure Ratings
Up to 1379 bar / 20000 psi – dependent upon material​
Electrical Connection Sensor
w/o Integral Transmitter
M20 x 1.5 standard cable entry for JM, SM terminal box versions
Optional entries available: ½” NPT or M25 x 1.5 (only for SM) or ¾″ NPT (only for SM)
M16 x 1.5 standard cable entry for PM terminal box version
Max. cable length to remote RHE transmitter 100 m/330 ft
Sensor Enclosure Materials
Stainless steel 304 (standard), SS 316 (optional)
Coated aluminium terminal box, SS 316 terminal box (optional)​
Enclosure Type
Protection class IP66, NEMA 4X (standard), IP66/67, NEMA 4X/6 (optional)​
Wetted Materials
Flow tubes SS 316Ti, Alloy C22, Tantalum or SuperDuplex
Manifolds SS 316L; Seal material (manifold construction): PTFE
Standard flanges SS 316Ti, other connections SS 316L
Additional/customer specific materials available upon request
Process Connections
Nearly any – the Rheonik AnyPipeFit Commitment.  Consult factory for types/sizes not listed in this data sheet on the Mechanical Construction pages
Pressure Rating Compliance
Europe – PED: Sound Engineering Practice (SEP), Module A2, Module B3.1+C2
Canada – CRN: Canadian Registration Number
Certifications / Approvals
ATEX / IECEx Approvals for Zone 0, 1 (details see page 17)
North American Approvals Class I, Div. 1, 2, Gr. A,B,C,D, Zone 0, 1
American Bureau of Shipping (ABS) Product Type Approval for use on marine vessels
Testing / Inspection
All sensors are hydro tested, calibrated and supplied with a traceable calibration certificate. Customised calibration and testing services are available
Project Docs / QA, Services

Rheonik offers a full set of services for large and complex engineering projects.
Typical services offered are, but not limited to:

– Certificates of origin and conformity, mill certificates
– Data books including WPAR, WQS, NDT, test & quality plans, functional testing, calibration procedures, customized packing, factory acceptance etc.
– Painting to project specification
– Start up and commissioning services on/offshore

Enclosure heating for high temperature applications​
Cleaning for oxygen service

* At Qnom pressure drop across a parallel tube sensor will be approximately 1 bar (14 psi) for H20. Sensors can be operated at higher flow rates up to Qmax but 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 rate.

The flow rate specifications above relate to standard pressure, parallel tube, manifold sensor versions. Models with higher pressure ratings have increased wall thickness and will have higher pressure drops.

Purchase Product

Price: POA Contact 247ABLE