RHM 02
FLOW SENSOR
The RHM 02 is available with a wide selection of wetted materials and the highest pressure and temperature ratings in the market. It is suitable for all low flow applications where high accuracy is a must.
- Range: 0.01 kg/min up to 2.7 kg/min
- Pressure: up to 1436 bar (20827 psi)
- Temperature: -196°C (-321°F) up to +350°C (662°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"
General Specifications
Nominal Flow (Qₙₒₘ)* | 1.8 kg/min (3.97 lb/min) |
Maximum Flow (Qₘₐₓ)* | 2.7 kg/min (5.95 lb/min) |
Typical Minimum Flow (Qₘᵢₙ)* | 0.01 kg/min (0.02 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 (-320 °F) to +210 °C (+410 °F). |
Ambient Temperature | Standard -50 °C (-60 °F) to +80 °C (+180 °F). |
Pressure Ratings | Up to 1436 bar (20827 psi) – depending on the material |
Electrical Connection Sensor | M20 x 1.5 standard cable entry Optional entry available: ½" NPT Max. cable length to remote RHE transmitter 100 m/330 ft. |
Sensor Enclosure Materials | SS 304 (standard), SS 316L (optional) Coated aluminum terminal box, SS 316L terminal box (optional) |
Enclosure Type | IECEX tested protection class IP66 (IP66 is mostly equivalent to NEMA 4X) |
Wetted Materials | Flow tubes SS 316L, Super Duplex, Alloy C22 Connection blocks SS 316L, seals FKM, FFKM, FVMQ, EPDM, HNBR Standard flanges SS 316Ti, other connections SS 316L Additional/customer specific materials available upon request |
Process Connections | Nearly any – the Rheonik AnyPipeFit Commitment covers a wide range of process connection types and sizes. Consult factory for types/sizes not listed (see datasheet). |
Pressure Rating Compliance | Pressure Equipment Directive (PED). Others (e.g. CRN) on request. |
Certifications and Approvals | ATEX / IECEx Approvals Zone 0, 1, 2 (see datasheet) North American Approvals Cl. I, Div. 1, 2, Gr. A,B,C,D, Zone 0, 1, 2 (see datasheet) Canadian Registration Number (CRN) |
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. • Certificates of origin and conformity, mill certificates • Data books including WPS-WPQR, WPQ, NDT, test & quality plans, functional testing, calibration procedures, customized packing, factory acceptance etc. • Painting to project specification • Start up and commissioning services on/offshore |
Options | Customization services for machine integration available upon request. |
* 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, connection block sensor versions. Models with higher pressure ratings have increased wall thickness and will have higher pressure drops.