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Description
4.9 Approvals
The ultrasonic signal is sent directly between the transducers. The advantage gained sending
signals from point to point is an extremely good signal strength.
4.8
Measurement accuracy
Due to the direct measurement in the medium, the measurement is more accurate than a clamp-
on measurement.
The measurement accuracy for a 2-path measurement is +/-0.5 -1.5% with a flow speed of
0.5 m/s up to 10m/s. A higher number of measurement paths (e.g. 4 path measurement)
leads to an improvement in the measurement result. The flow profile at the measuring
point can be better recorded by the transmitter if there are several measuring paths. Flow
profile disturbances are detected and corrected by the transmitter, thereby increasing the
measurement accuracy.
If very high measurement accuracy is required, the flowmeter can be additionally calibrated
after installing the sensors in the pipe. This additional service can be carried out by a certified
calibration service provider.
4.9
Approvals
Note
For further details see Ultrasonic certs on SIOS
support.industry.siemens.com/cs/ww/en/ps/17368/cert).
The device is available with approvals for general purpose and for hazardous areas. In all
cases, check the nameplate on your device, and confirm the approval rating.
26
1A
1B
(https://
Installation Manual, 12/2023, A5E52595000-AA
SITRANS FSS100
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