RHM 15


The RHM 15 is an all-purpose meter suitable for liquid processing plants. A wide application flow range capability allows for commonality of installation across numerous lines – a real benefit to owners and operators.

  • Range: 0 kg/min up to 240 kg/min
  • Pressure: up to 359 bar (5206 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, Super Duplex – 1.4410, Tantalum – UNS R05200
  • Process Connection: ¾" up to 2"
CATEGORY Medium Size Sensors, Chemical Injection, Fuel Consumption, Oil Measurement, Painting/Coating Lines, Plastics Production

General Specifications

Nominal Flow (Qₙₒₘ)*

150 kg/min (330.7 lb/min)​

Maximum Flow (Qₘₐₓ)*

200 kg/min (440.9 lb/min)​

Typical Minimum Flow (Qₘᵢₙ)*

2 kg/min (4.4 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 transmitter datasheet​

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 882 bar / 112792 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 aluminum 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 and 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​

MID custody transfer approval (OIML R117)​

American Bureau of Shipping (ABS) Product Type Approval for use on marine vessels​

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. ​
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 , …​

For more consult factory​

Pressure Drop

* 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.