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Elster Q.Sonic PLUS - Hot Commissioning

Elster Q.Sonic PLUS
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Installation and Commissioning
6
Page 32 of 68
Operation and Maintenance
UFM Series 6
Q.Sonic-plus
6.6 Hot Commissioning
The hot commissioning is in most cases the last test of the UFM and can be
witnessed by a representative of the client and, if required, by an inspector
of weights and measures for the official sealing. Under this condition there is
process gas in the pipe and a flow test is being performed. The
performance, AGC Levels/Limits and zero flow are checked again. If
possible, the gas flow running through the UFM will be compared to another
flow meter in the line. Most UFMs are calibrated gas flow meters, so the
measured value is reliable without exception. Furthermore, the interaction
with the flow computer can be tested.

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