Siemens SITRANS WFS300 Manual de Instruções - Página 23
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Commissioning
6.1
Calibration
A test weight is a calibration reference used to simulate a material impact force (test rate) on
the flowmeter sensing plate during the integrator span calibration. The test weight is also
used to perform a test to verify that the flowmeter sensing head is level.
The test rate should be 60 to 80% of the system design rate.
To determine the test rate produced by a specific test weight, calculate:
Alternatively, to determine the test weight required for a specific test rate, calculate:
Note
*For WF350 flowmeters, use 80 grams (instead of 65 grams) when calculating Test Rate or
Test Weight.
Example
If the test weight used with a WF330 flowmeter is 500 grams:
Note
Use metric tons per hour (t/h) or short tons per hour (STPH) as applicable for TPH.
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Operating Instructions, 03/2021, A5E32880243-AC
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SITRANS WFS300