Technical data RMS621
66 Endress+Hauser
Operating elements Eight front-panel soft keys interact with the display (key functions are shown on the display).
Remote operation RS232 interface (jack socket on front panel, 3.5 mm): configuration via PC with ReadWin
®
2000
PC operating software.
RS485 interface
Real time clock • Deviation: 30 min per year
• Power reserve: 14 days
Mathematical functions Flow, differential pressure calculation: EN ISO 5167
Continuous calculation of mass, standard volume, density, enthalpy, quantity of heat using stored
algorithms and tables.
Water / steam calculation according to IAWPS-IF97
10.0.9 Certificates and approvals
CE mark The measuring system meets the legal requirements of the EC Directives. Endress+Hauser confirms
successful testing of the device by affixing to it the CE mark.
Ex approval Information about currently available Ex versions (ATEX, FM, CSA, etc.) can be supplied by your
E+H Sales Centre on request. All explosion protection data are given in a separate documentation
which is available upon request.
Other standards and
guidelines
• EN 60529:
Degrees of protection through housing (IP code)
• EN 61010:
Protection measures for electrical equipment for measurement, control, regulation and laboratory
procedures
• EN 61326 (IEC 1326):
Electromagnetic compatibility (EMC requirements)
• NAMUR NE21, NE43
Association for Standards for Control and Regulation in the Chemical Industry
•IAWPS-IF 97
Internationally applicable and recognised calculation standard (since 1997) for steam and water.
Issued by the International Association for the Properties of Water and Steam (IAPWS).
•OIML R75
International construction regulation and test specification for water energy managers of the
Organisation Internationale de Métrologie Légale.
• EN 1434 1, 2, 5 and 6
• EN ISO 5167
Flow measurement of fluids with throttle devices
10.0.10 Documentation
Product group brochure 'Energy manager' (PG 006R/09/en)
Technical Information 'Flow and energy manager RMS 621' (TI 092R/09/en)
Technical Information 'Vortex flow measuring system PROline Prowirl 72' (TI062D/06/en)
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