The ST80 series thermal flowmeter has been expanded to provide a Profibus DP solution along with its existing Profibus PA capability. The Profibus DP protocol expands communications options between a plantwide Profibus communications system for air and gas flow metering measurement and control. The flowmeter can be configured as either a field instrument PA device or a system RS-485-based DP device. It provides air/gas flow rate, totalized flow, temperature and instrument health diagnostics over the Profibus digital bus. In addition to Profibus I/O, it includes standard output options of dual 4-20 mA analog (NAMUR NE 43-compliant), HART (Version 7) I/O and Modbus RTU.
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