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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 03 Small Coriolis Mass Flow Meter < 7.5 kg/min

ABLE Instruments are Rheonik’s Exclusive Representative for Sales and Service in the UK and Ireland, including the RHM 03 Small Coriolis Mass Flow Meter. Designed to deliver precision and accuracy in low flow applications, the RHM 03 offers a wide selection of wetted materials and boasts the highest pressure and temperature ratings available in the market.

With a flow range from 0.03 kg/min to 7.5 kg/min, the Rheonik RHM 03 Mass Flow Sensor is ideally suited for applications where maintaining high accuracy is of paramount importance. It excels in industries where even the slightest deviation can result in significant consequences.

What truly sets the RHM 03 Mass Flow Meter apart is its exceptional capability to withstand extreme pressures, reaching up to a remarkable 1311 bar (19014 psi). This high-pressure resilience makes it the go-to choice for processes where maintaining accuracy under immense pressure is vital.


  • Range: 0.03 kg/min up to 7.5 kg/min
  • Pressure: up to 1311 bar (19014 psi)
  • Temperature: -196°C (-321°F) up to +210°C (410°F)
  • Accuracy: 0.1 % of rate
  • Materials: SS 316L / SS 316Ti, Super Duplex – 1.4410, Alloy C22 – 2.4602
  • Process Connection: ¼” up to 1″
  • Suitable for fiscal / custody transfer applications
  • Available in all exotic materials

Temperature extremes are no challenge for the Rheonik RHM 03, as it functions seamlessly in conditions ranging from a chilling -196°C (-321°F) to a scorching +210°C (410°F). Regardless of the environmental conditions, it maintains its precision and reliability. Precision is the heart of the RHM 03 Flow Sensor, with an accuracy of 0.1% of the rate, ensuring that the data it provides is consistently dependable. It’s this level of precision that makes it indispensable in applications where accuracy is non-negotiable. Constructed with a selection of durable materials, including SS 316L, SS 316Ti, and Super Duplex – 1.4410, the RHM 03 is compatible with a wide range of liquids and is immune to corrosion. The meter’s adaptability is further enhanced by its process connections, ranging from ¼” to 1″, allowing for seamless integration into existing systems and setups.

In summary, the Rheonik RHM 03 Mass Flow Meter is the epitome of precision and reliability in low flow applications. With its exceptional pressure and temperature ratings, accuracy, and a variety of wetted materials, it’s a top choice for industries where maintaining accuracy under challenging conditions is imperative.

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 03 Specifications:

Nominal Flow (Qₙₒₘ)*
5 kg/min (11 lb/min)
Maximum Flow (Qₘₐₓ)*
7.5 kg/min (16.5 lb/min)
Typical Minimum Flow (Qₘᵢₙ)*
0.04 kg/min (0.88 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 from -196 °C to +210 °C (-320 °F to +410 °F)
For integral transmitter versions please refer to transmitter datasheet
Ambient Temperature
-50 °C to +80 °C (-60 °F to +180 °F).  High temperature version for oven installation up to +350 °C (+662 °F) available
Pressure Ratings
Up to 1311 bar / 19014,45 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 IP 66, NEMA 4 (standard), IP 66/67, NEMA 4X (optional)
Wetted Materials
Flow tubes SS 316L or SuperDuplex
Manifolds SS 316L, seals FKM, FFKM, FVMQ
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
PED 2014/68/EU Article 4, Section 3 (SEP)
Certifications / Approvals
ATEX / IECEx Approvals Zone 0, 1, 2 (details see page 18)
North American Approvals Cl. I, Div. 1, 2, Gr. A, B, C, D, Zone 0, 1, 2
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

Customisation services for machine integration.

* At Qnom pressure drop across a parallel tube sensor will be approximately 2 bar (29 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

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Price: POA Contact 247ABLE