Siemens SITRANS F US User Manual (English)

Other manuals for Siemens SITRANS F US

Operating Instructions52 pages

Protocol Manual194 pages

Questions and Answers:

D
dylanjohnstonAug 5, 2025
What to do if Siemens SITRANS F US display shows 0 flow and flashing “F”?
- S
  sandra28Aug 5, 2025
  If your Siemens Measuring Instruments display shows 0 flow and a flashing “F”, it could be due to several reasons. First, ensure the pipe is filled with liquid, or at least the sound path is covered. Second, check the transducer cable connection in the transmitter's terminal housing, ensuring the screen and center pin are connected inside the transducer top. Lastly, inspect the transducer window inside the pipe for damage or any permanent disturbance.
V
Victoria FosterAug 16, 2025
Why is the flow reading unstable on my Siemens SITRANS F US?
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  gonzalezginaAug 16, 2025
  Unstable flow readings on your Siemens Measuring Instruments, indicated by a flashing “F”, can be due to several factors. Air bubbles or particles in the pipe may be disturbing the measurement; ensure the pipeline is ventilated and particle concentration is limited. A partially connected cable can also cause this; verify that the transducer cables are securely connected at both the transmitter and sensors (SONO 3200 or SONO 3300), and check the cable screening. Also, ultrasonic echoes might be the cause, so ensure the entered track lengths correspond with the measurement report.
D
Dean MillerAug 25, 2025
How to fix negative flow on Siemens SITRANS F US?
- B
  Brittany NealAug 25, 2025
  If your Siemens Measuring Instruments device displays negative flow, it is likely due to an interchange of transducer cable connections. To resolve this, ensure the transducer cables are connected correctly, following this configuration: 1A to 1A, 1B to 1B, 2A to 2A, and 2B to 2B.

Siemens SITRANS F US Specifications

General

Type	Ultrasonic flowmeter
Measurement Principle	Transit time difference
Measurement Range	0.01 to 25 m/s
Temperature Range	-40°C to +200°C
Output Signal	4 to 20 mA, HART, Modbus RTU, PROFIBUS PA/DP
Power Supply	24 V DC or 100 to 230 V AC (depending on model)
Enclosure Protection	IP65, IP67, IP68
Approvals	ATEX, FM, CSA, IECEx (depending on model)
Housing Material	Stainless steel, aluminum
Process Connection	Flanged, Wafer, Threaded
Fluid types	Liquids
Applications	Water, wastewater, chemical, power, oil & gas
Repeatability	±0.15% of flow rate