Siemens SITRANS FUS1020, Manual, Page: 50 / 251

2-31
1020NFM-1D
Section 2
Siemens 2 Channel [1] SITE1
Transducer Model 1021 Xdcr
Transducer Size C1
Xdcr Mount Mode Reflect
Spacing Offset Nominal Flow
Number Index 24
Spacing Method Invalid
Ltn Value (in) 2.330
Install Completed? Install
Empty Pipe Set Chan Not Setup
Zero Flow Adjust Chan Not Setup
Drive 53 0 36 [6: :0]
Pick/Install Xdcr
Measured Vs m/s
1395
z
However, as an example, assume that the liquid’s sonic velocity is very well known and is actually
1377 m/s. Press the <Right Arrow>. Note that an “equal sign” appears before the displayed sonic
velocity. Type [1377] and then press the [ENTER] key.
NOTE: As your 1020 metering experience with various liquids evolves, your knowledge and
confidence regarding their sonic velocities will grow. If the Estimated Vs and Mea-
sured Vs at site are different, as in the example on the previous page, consider it a
warning that something about the installation may be incorrect. Recheck transducer
mounting geometry (e.g., Are they axial, diametrical and spaced correctly?) and your
pipe data and re-install. On the other hand, when the Measured Vs conforms to the
Actual Vs, your degree of confidence in the correctness of the installation and the
meter’s intrinsic calibration performance should be high.
Siemens 2 Channel [1] SITE1
Transducer Model 1021 Xdcr
Transducer Size C1
Xdcr Mount Mode Reflect
Spacing Offset Nominal Flow
Number Index 24
Spacing Method Invalid
Ltn Value (in) 2.330
Install Completed? Install
Empty Pipe Set Chan Not Setup
Zero Flow Adjust Chan Not Setup
Drive 53 0 36 [6: :0]
Pick/Install Xdcr
Measured Vs m/s
1377
z
This commands the meter to re-calculate its timing parameters to accommodate the new sonic
velocity setting.