Siemens SITRANS F Mode D'emploi page 46

Appendix
A.1 I/O Connections and Wiring
①
②
③
R = 1000 ohms (max) w/o Barriers
R = 320 ohms (max) with Barriers
Vc = Output High and Low
I = 4-20mA
R = Loop wire resistance (both ways) plus User's input load resistance.
Do Not Exceed +12VDC when Barriers are used.
DO Not Reverse Polarity
Load:
200 ohms without Barrier plus two way wire resistance.
320 ohms with Barrier plus two way wire resistance.
I = 7mA (max)
Rc = Total non-inductive load
Vc output High and Low level for different VC with: R = 4.7K ohms, 0.15 Watt (min)
44
Flow meter
Barrier
User Supply +24V
Isolated 4-20mA Output TB1-1/3 & TB1-2/4
④
⑤
⑥
4-20mA Analog Output TB1-5 & TB1-6
Isolated Status/Alarm or PGEN Outputs
FUH1010 IP65 NEMA 7 Interface Detector Quick Start
User 4-20mA Source
To TB2-16 Gnd
Output Vc
Operating Instructions, 06/2014, A5E02428148-AA