One is that Coriolis mass flow meters remain the most accurate mass flow meter, and they are highly reliable with little need for maintenance. Coriolis meters do not place any obstruction in the flow stream, although bent-tube meters can slow down flow velocity. Straight-tube meters have been developed to address this effect and to suit the needs of sanitary applications, which pose an issue for bent-tube meters, which can accumulate material building at their bending points.
The most important recent advance in the Coriolis mass flow meter market is the development of Coriolis meters for line sizes above 6 inches. Rheonik, now part of GE Measurement, used to be the only company offering large line-size Coriolis meters. Coriolis mass flow meter is primarily targeting oil & gas applications. Many of them, though not all, are designed for custody-transfer applications.
After the exhaustive testing of many different designs, the Omega tube meter with torsion rods and mass bars was granted a patent based upon its unique operation and construction feature. Compared to other meter designs, the Rheonik Omega tube design offers outstanding performance and mechanical reliability.
Rheonik was founded in 1986 by Mr. Küppers to commercially produce the Rheonik Mass Flow meter range. Based initially in the town of Maisach near Munich, the company grew quickly due to the widespread success of the Rheonik design in the field.
All Rheonik Coriolis mass flowmeters are based on a patented Omega tube design with an increased signal-to-noise ratio, for excellent performance and reliability. The combination of a patented torsion rod swinger with the Omega shape and support bars results in high accuracy measurement independent of pressure, even at very low flow velocities.
RHM Coriolis flow sensors offer a direct mass flow rate for liquids, sludge, and gases, all with high accuracies. These sensors are extremely resistant to gas bubbles entrained in the process stream and are unaffected by viscosity, density, extreme temperatures, and pressure changes.There’s a Rheonik RHM flowmeterfor nearly any flow application range :
The capacity of Rheonik RHM Coriolis flow sensor
RHM Coriolis Sensors Overview from Rheonik Messtechnik GmbH :
P MAX @ 120°C
THE TYPICAL SIZE OF PROCESS CONNECTION
DN40, 1 1/2″
The typical Omega-shaped Rheonik Coriolis mass flowmeter. All Rheonik meters are principally based on the design shown beside. No other design offers this degree of versatility and rangeability:
- Measurement of liquid and gaseous fluids
- Flow rates from 0.002 to 30,000 kg/ min (0.004 to 66,000 lbs/min)
- Diameters up to 12 inches / DN 300
- Pressure over 1,000 bar (14,500 psi)
- Temperature from -196°C to +395°C (-320°F to +743°F)
- Hazardous area certified versions available (ATEX, CSA etc.)
- Available in stainless steel, Alloy C22, Duplex, Tantalum, and othes