Ultrasonic flow meters - UFM 530 HT - Forbes Marshall
Ultrasonic flow meters - UFM 530 HT - Forbes Marshall
Ultrasonic flow meters - UFM 530 HT - Forbes Marshall
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<strong>UFM</strong> <strong>530</strong> <strong>HT</strong>ELECTRICAL CONNECTIONS 4Ex NAMUR versionFigure 4-8: Terminals for Ex instrument with NAMURTerminal Function Specification1 Neutral mains power supply 100...240 VAC, 24 VAC or 24 VDC2 Live mains power supply 100...240 VAC, 24 VAC or 24 VDC3 Combined current output (I) and digitalinput (C). Current output (I) includesHART-Communication.Current 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).4 Pulse / frequency output I max = 150 mA, U max =32VDC/ 24VAC,maximal frequency = 2 kHz.5 Ground for pulse output6 Analog input 1, for temperaturemeasurement.0(4)...20 mA, R i = 58,2 Ω, fuse = 50 mA.7 Common groundThe current output of the UFC 030 F-EEx can be set according to NAMUR NE43. The currentoutput will go either to 3.6 or 21.5 mA in case of failure indication.02/2010 - 4000210602 - TD <strong>UFM</strong> <strong>530</strong> <strong>HT</strong> R02 enwww.krohne.com25
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