Coriolis Mass Flow Meter RHM 02Indonesia Industrial Parts

The RHM 02 is available with a wide selection of wetted materials and the market’s highest pressure and temperature ratings. It is suitable for all low-flow applications where high accuracy is a must. Category: Small Size Sensors, Chemical Injection, Oil Measurement, Painting/Coating Lines

Characteristics Coriolis RHM 02

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 +210°C (410°F)
Accuracy: 0.1 % of rate
Materials: SS 316L / SS 316Ti, SuperDuplex – 1.4410, Alloy C22 – 2.4602
Process Connection: ¼” up to 1″

Performance Data Coriolis RHM 02

Flow Measurement Uncertainty :

Selected Sensors down to ±0.05 % ¹ of rate (Gold Line)
Standard Sensors down to ±0.15 % ² of rate

Flow Measurement Repeatability: Down to ±0.05 % of rate

Temperature Measurement: Better than ±1 °C

Density Calibration (Liquid) :

Selected Sensors down to ±0.0005 kg/liter (Gold Line)
Standard Sensors down to ±0.001 kg/liter

Measurement Tube Pressure Ratings: The maximum pressure (p???) of a sensor is determined by its lowest rated part. The lowest rated part can be either the measurement tube (p??? indicated below), the connection block/manifold (p??? indicated in the mechanical construction section) or the process connection (for p??? see published standards or manufacturer information).

SS 316L (standard) :

50 °C or 122 °F: 314 bar and 4554 psi
120 °C or 248 °F: 279 bar and 4047 psi
210 °C or 410 °F: 236 bar and 3423 psi

SuperDuplex ³ Low Pressure :

50 °C or 122 °F: 728 bar and 10559 psi
120 °C or 248 °F: 677 bar and 9819 psi
210 °C or 410 °F: 608 bar and 8818 psi

SuperDuplex ³ Medium Pressure :

50 °C or 122 °F: 950 bar and 13779 psi
120 °C or 248 °F: 900 bar and 13053 psi
210 °C or 410 °F: 840 bar and 12183 psi

SuperDuplex ³ High Pressure :

50 °C or 122 °F: 1436 bar and 20827 psi
120 °C or 248 °F: 1337 bar and 19392 psi
210 °C or 410 °F: 1199 bar and 17390 psi

Uncertainties and flow measurement turn-down

All uncertainty statements refer to reference conditions – mass flow of water, 18 – 24 °C, 1 – 3 bar in a standard temperature, pressure and material configuration sensor. The sensor can be used to measure gas – uncertainty values for gas equal the liquid value plus 0.3 %. Reference conditions for gas are mass flow of natural gas, 18 – 24 °C, 35 to 100 bar in a standard temperature, pressure and material configuration sensor.

The turn down capability from Qnom of the flow sensor is mainly driven by its zero point stability. At the very low end of the measuring range the uncertainty (u) is dominated by the zero point stability. The zero point stability of a standard sensor is: 0.000036 kg/min (0.000079 lbs/min). Zero stability of a Gold Line sensor is 0.000019 kg/min (0.000042 lbs/min).

*For flow Q ? zero stability / (calibration uncertainty/100) u = calibration uncertainty
*For flow Q < zero stability / (calibration uncertainty/100) u = (zero stability/Q) x 100

Uncertainties from environmental and process conditions

If sensors are not zeroed at operating conditions, minor additional uncertainties can arise from elevated temperatures and pressures: ±0.00308 % of maximum flow per °C and ±0.0208 % of maximum flow per bar.
Process temperature effect on density: additional uncertainty of ±0.000641 g/cm³ per °C difference from calibration temperature with standard density calibration and of ±0.000073 g/cm³ per °C difference from calibration temperature with enhanced density calibration. This effect can be mitigated by a simple field density adjustment at operating conditions.
Process pressure effect on mass flow: The effect of pressure on flow measurement is 0.001 % of rate per bar. Compensation is possible by pressure sensor input (analog input or digital write) or manual value entry into the transmitter.
Process pressure effect on density: The effect of pressure on density measurement is 0.00012 g/cc per bar. Compensation is possible by pressure sensor input (analog input or digital write) or manual value entry into the transmitter.

(1) Requires 40 Series transmitter or higher
(2) Requires RHE16 or higher transmitter.
(3) Note minimum operating temperature for SuperDuplex stainless steel is -40°C

Specifications Coriolis RHM 02

Nominal Flow (Q???): 1.8 kg/min (1.32 lb/min)

Maximum Flow (Q???): 2.7 kg/min (2.65 lb/min)

Typical Minimum Flow (Q???): 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 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) (standard), versions available for installation in vacuum chamber (-260 °C / -430 °F) or oven (up to +210 °C / +410 °F) (optional).

Pressure Ratings: 1436 bar (20827 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 IP 66, NEMA 4 (standard), IP 66/67, NEMA 4X (optional)

Wetted Materials :

Flow tubes SS 316 L or SuperDuplex
Manifolds SS 316 L, seals FKM, FFKM, FVMQ
Standard flanges SS 316 Ti, other connections SS 316 L
Additional/customer specific materials available upon request

Process Connections: Nearly any – the Rheonik Any Pipe Fit 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 and Approvals :

ATEX / IECEx Approvals Zone 0, 1, 2
North American Approvals Cl. I, Div. 1, 2, Gr. A,B,C,D, Zone 0, 1, 2
American Bureau of Shipping (ABS)

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

Options: Customization services for machine integration. Consult factory

At Q??? pressure drop across a parallel tube sensor will be approximately 2 bar (29 psi) for H?0. Sensors can be operated at higher flow rates up to Q??? but pressure drop will be higher. Typical Minimum Flow Q??? is the recommended lowest flow rate for an accurate measurement. Sensors will measure flow rates lower than Q??? 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.

For More Information and Price: Coriolis Mas Flow Meter RHM 02

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