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Misuratore_di_portata_termico_nassico_COMBIMASS_COMPACT_riels

Misuratore_di_portata_termico_nassico_COMBIMASS_COMPACT_riels
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Misuratore_di_portata_termico_nassico_COMBIMASS_COMPACT_riels - 1

Combimass® compact The Riels COMBIMASS® compact series of gas mass flow meters are fìeld transmitters for flow rate measurement.They are especially designed for process applications at temperatures of up to II 00°C and operating pressures of up to 100 bars. Optionally, the units are avalla- bile in explosion-proof versions for Zone I or Zone O.The flow transmitters apply thermal dispersion technology in orderto measure directlythe normal volumetrie or gas mass flow, regardless of the operating pressure and temperature of the medium. Ali units of the COMBIMASS® series are characterized by high-performance digitai signal processing. Important features of the transmitter electronics for the purposes of practi- cal operation are the temperature compensation and the opportunity to select different measuring modes (choice between Constant current or Constant temperature priciple). For operation of the flow meters at higher ambient temperatures, ali transmitters of the COMBIMASS®compact series are optionally available with hybrid ceramic circuitry. The electronics ofthe COMBIMASS® compact is located in a compression-proof dual com- partment stainless steel enclosure. The slewable cable gland for easy installation is ideally suited for outside operation of the flow transmitter Optionally a 10 digits LED display with control panel is available for indication of actual flow rate ortotalized flow as well as for fìeld programming of the flow meter Fortransmission ofthe flow signal an isolated 4-20 mA analog output as well as a fìeld selec- table pulse output are available. For intrinsically safe operation a dedicated process interface module has been developed for the power supply of the flow transmitter In such a case, the signal output is done via an I/O module installed downstream of the process interface module.The circuitry ofthe process interface module and the I/O module is located in a top hat rail housing for easy switch cabinet assembly. Also an optionally available graphic display The flow transmitter can be combined with a wide range of different sensors of the COM- BIMASS® family and assembled individually according to the specifìc application. Each flow meter will be tested priorto shipment and calibrated at our CAMASS® calibration centre under actual operating conditions. Smart Features -Thermal flow meter for direct measurement of normal volumetrie or gas mass flows - Flow rate measurement unaffected by pressure and temperature fluctuations - Pressure-proof dual compartment stainless steel enclosure - Slewable packing gland avoids moisture permeation in outside installations - Compact and rugged design for exceptional reliability - Easyto instali and service - Unmatched accuracy due to digitai signal processing -Temperature compensated flow rate measurement - Choice of different measuring modes - Available with hybrid ceramic circuitry for operation at ambient temperatures up to 140°C - Expandable due to modular design -Wide range of different sensors for each specifìc application - Suitable for process temperatures of up to II 00°C - EEx [ed] Zone I / EEx [ia] Zone 0 optionally available Applications versatility - Cobustion gases such as methane, propane, naturai - Waste gas measurement, especially at high process - Combustion air in incineration plants - Biogas in wastewater and environmental installations - Highly corrosive, explosive and flammable gases - Gases at extreme process conditions - Process gases such as acetylene, H2, phosgene, ozo- - Gases and gas mixtures of known composition Measuring principle Measured parameter Signal processing Measuring modes Protection class Explosion protection Gas flow measurement based on thermal dispersion technology _ Compressed air, air, technical gases, inert gases, supply gases, combustion gases, process gases, explosive and flammable gases, dirty and moist gases, gases at extreme process temperatures and pressures, gases and gas mixtures of known compo- sition, depending on choice of sensor_ • Normal volumetrie flow [NmVh] » Normal flow velocity [Nm/s]_ Microprocessor based, fully digitai signal processing Constant current or Constant temperature principle Note: The measuring mode will be selected by our qualified technicians depending on the application requirements during calibration ofthe flow meter and may not be changed by theoperator._ One calibration group with advanced temperature compensation Pressure proof dual compartment enclosure, 1.4571, 0 62 mm Approvals according toATEX (optional): Riels Instruments Srl. W+39 049 8961771 - A +39 049 7l7368 .www.riels.it. info@riels.it

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Misuratore_di_portata_termico_nassico_COMBIMASS_COMPACT_riels - 2

Ambient conditions Power supply Ambient temperature -40°C to 80°C (standard electronics), Ambient temperature -40°C bis 140°C (hybrid ceramic circuitry-optional), Power supply via standard supply units possible For intrinsically safe operation - EEx [ia] - power sup /via process interface module Power consumption Reproducibility (electronics) System accuracy (electronics) Measuring accuracy andtypeof calibration) Flow range Turndown ratio Field display/control (optional) Graphic display (optional) 0,2% of reading + 0,025% of full scale 2% of reading + 0,1% of full scale (standard...

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