A Mass Flow Meter operating on the “Coriolis principle” contains a vibrating tube in which a fluid flow causes changes in frequency, phase shift or amplitude. The sensor signal is fed into the integrally mounted pc-board. The resulting output signal is strictly proportional to the real mass flow rate, whereas thermal mass flow meters are dependent of the physical properties of the fluid. Coriolis mass flow measurement is fast and very accurate.

Coriolis flow meters work on the principle that the inertia created by fluid flowing through an oscillating tube causes the tube to twist in proportion to mass flow rate. Many Coriolis meters have two tubes. They are made to vibrate in opposition to each other by means of a magnetic coil. Sensors in the form of magnet and coil assemblies are mounted on the inlet and the outlet of both flow tubes. As the coils move through the magnetic field created by the magnet, they create a voltage in the form of a sine wave. These sine waves are the key to measuring mass flow.

Coriolis flow meters are the most accurate flow meters made. While many magnetic flow meters have accuracies in the range of 0.5 percent, many Coriolis flow meters achieve accuracy of 0.1 %. It is the high accuracy of Coriolis flow meters that is one of the major reasons for their extremely rapid growth over the past five years. Companies that need flow meters for custody transfer, or want highly accurate measurements in terms of mass, have a good reason to select Coriolis flow meters also very easy to installasi.

RHM 30 Coriolis Mass Flow sensor

    • General Flow Control
    • Plant Balance
    • Additive Dosing
    • High Temperature Fluids
    • Viscous Fluids
    • Mixing, Blending, Batching
    • Package and Container Filling
  • Nominal Max Flow Range: Parallel/dual path measurement tube versions:                                            750 kg/min (1653.5 lb/min)
                                              Serial/single path measurement tube versions:                                            375 kg/min (826.7 lb/min)
    Density Range : 5 to 5000 kg/m3 (0.31 to 312 lb/ft3)
    Temperature Range : 5 temperature range options cover temperatures                                       from -196°C to 350°C (-320°F to 662°F)
    Pressure Ratings : Dependent upon material
    Electrical Connection : Cable entry M25 x 1.5 (standard) M20 x 1.5, ½"                                      NPT, ¾" NPT (optional)
                                      Max cable length to remote RHE transmitter 100m                                    (330 ft)
    Sensor Housing Materials : 1.4301 / 304 stainless steel (standard),                                                       1.4571 / 316Ti stainless steel (optional)
                                               Epoxy coated aluminium electrical box                                                       (standard), 1.4571 / 316Ti stainless steel                                                   (optional)
    Enclosure Type : Protection class IP 65. Optional IP 66 / NEMA 4X
    Material of Wetted Parts : Sensors are available in a variety of standard                                              and custom materials to suit a wide range 
                                            of pressure ratings and chemical compatibility                                            requirements. See the pressure ratings 
                                            listing in this document for further details
    Finishes : ANSI flange finish : AARH 125 to 250 μin, Ra 3.2 to 6.3 μm
    Certifications and Approvals : ATEX approval Zone 0: Ex II 1 G Ex ia IIC                                                  T1-T6 Ga
                                                  ATEX rating Zone 2: Ex II 3 G Ex nA IIC T1-                                                T6 Gc
                                                  CSA USA-Canada, Class I, Div. 1, Groups                                                  A, B, C, D
                                                  PED according to 97/23/EC Module A1 or                                                  Module B + C1 (as required by application)
    Documentation : All sensors are supplied with a traceable calibration                                  certificate. Optional documentation 
    items available:
    - Traceable material certificates
    - Certificates of origin and conformity
    - Welding
    - NACE
    - Quality
    - Production and manufacturing procedures
    Other documentation to client requirements available
    Proof Testing: Hydrotest, dye penetrant, x-ray, PMI
    Options : Enclosure heating matrix for high temperature applications

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