Siemens SITRANS F Additional Operating Instructions page 20

SERVICE
4
Proof test coverage
Step
1
2
Calibration verification (optional)
A proof test coverage of > 97% can be reached with a calibration verification. If appropriate
facilities are not available, please contact the manufacturer for calibration verification.
Test with simulated vortex frequencies (step 2)
Required equipment
• Power supply 14...30 VDC
• Calibrated frequency generator, accuracy << 1%, two channels 180° phase shifted, 100 mVpp
amplitude (step 2)
• Calibrated current meter (steps 1 and 2)
Execution of frequency simulation for the proof test
To setup the device for proof testing, the following steps have to be performed:
• Set the device to non-SIL mode (for details refer to
• Unfix the electronics housing by loosening the 4 cylinder screws 1 and take off the
electronics housing carefully.
Figure 4-1: Unfixing of the electronics housing
1 Cylinder screws
2 Washers
3 Gasket
20
Measure
Current output check according to routine in chapter
"Verification of configuration".
Test with simulated vortex frequencies.
www.siemens.com/flow
Proof Test Coverage
12%
96%
Switch to non-SIL mode
10/2017 - A5E40875009-AB EN
SITRANS FX330
on page 16).