For treatment plants which have additional upstream hydraulic head available, the operatingwaterlevel can be raised and the shaft bearings can then be mounted directly to the top of the tank walls.
A severe phenomenon of false waterlevel exists in boiler drum under varying operating conditions.
锅炉汽包在变工况运行时往往产生严重的“虚假水位”现象。
3
The device shall be required to operate through a normal operating range of 35% to 105% rated output over the full range of specified waterlevel conditions.