Ultrasonic flow meters - UFM 530 HT - Forbes Marshall

4 ELECTRICAL CONNECTIONSUFM 530 HTNon Ex version with Profibus PAFigure 4-5: Terminals for instrument with Profibus PA (non Ex).Terminal Function Specification1 Communication connection - For Fieldbus communication2 Communication connection + For Fieldbus communication3 Combined current output (I), digitalinput (C) and Pulse / frequency output.Current output (I) includes HART-Communication.4 Analog input 2, for temperature orpressure measurement.5 Analog input 1, for temperaturemeasurement.6 Common groundCurrent output (I): I ≤ 22 mA,R load ≤ 680 Ω, U max = 15 VDC.Digital input (C): low = 0...5 VDC,high = 15...32 VDC (will be switched offwhen current output activated).Pulse output: I max = 150 mA,U max = 32 VDC / 24 VAC, maximalfrequency = 2 kHz.0(4)...20 mA, R i = 58,2 Ω, fuse = 50 mA.0(4)...20 mA, R i = 58,2 Ω, fuse = 50 mA.22www.krohne.com02/2010 - 4000210602 - TD UFM 530 HT R02 en