When a differential pressure water - levelgauge is used to measure the water - level in the vessel, large uncertainty can be induced because of the change of media density in the vessel.
在高温高压容器中采用差压式水位计测量水位的方法，通常由于容器中介质密度的变化给测量带来很大误差。
2
The measure error of drum differential pressure water levelgauge is reduced now.