Posted on March 12, 2012 - ( views)
The ROTAMASS 3 Coriolis flowmeter series by Yokogawa has been extended by adding a Modbus interface. Communications via an RS-485 connection will be available in both Modbus RTU and ASCII transmission modes. The Modbus communication at up to 57kbit/s enables access to all relevant process measurements including - but not limited to - mass/flow, density and temperature. All measurement variables are included as readable address registers. In addition to the Modbus communication, the standard I/O interfaces such as 4-20 mA, pulse/frequency and status in/out are still available for control and/or monitoring purposes.
For easy configuration of meter measurements and settings, a free ROTAMASS Modbus communication tool will be delivered with each device. This software tool is equipped with different functions, clearly shown in an explorer view. Despite Modbus communication, all settings can be done by means of the indicator. Even simultaneous HART communication via HHT or FDT is possible.
The flowmeter is respected in the market for its superior “box in box” design, which guarantees decoupling of the device from external vibrations and stresses. With its two U-shaped and thick wall tubes, this device achieves an optimum measurement accuracy of ±0.1% of reading for liquids and ±0.5% for gases, and has excellent zero-point stability, even under tough conditions in the field.
The mass-flow measurement range spans from 45kg/h to 600t/h. A unique density accuracy of ±0.0005g/cm3 (±0.5g/l) results from the real density being calibrated using different liquids and temperatures. The device can handle applications involving temperatures from -200 up to 350°C.
All models are available with a variety of process connections offering pressure rates up to 285 bar. The result is a range of instruments to suit every customer in terms of pressure loss, measurement accuracy and price.
Euroweg 2 (3825 HD Amersfoort)
3800 AD Amersfoort
for upstream oil & gas
in panel-mounted or portable version
ensuring safe operation of plants and upstream oil and natural gas facilities
for differential pressure and pressure
features multi-sensing capability
with dual bent tube design
for flow measurement in safety-critical applications
for oil/gas upstream applications
offers modules for power and upstream oil and gas applications
Whether in industry, meteorology or builing services, the humidity and temperature sensors from Galltec+Mela are at home...
PCN Europe’s May issue features an Industry Special concerning the chemical industry; in one of our articles on the subject we look at 100 years of industrial-scale ammonia production, another one shows you how overhead stirring systems helped to improve the efficiency of polymer synthesis. Our Product Focus on Plant Networking includes among others a case study about a SCADA system providing supervision for a confectionary manufacturer. You might also be interested in our technical article highlighting how modern communication technologies change terminal operation. This edition also presents you with many other application stories and product news from all areas of the processing industries, enhanced with datasheets and videos.