Dab tsi yog qhov ntsuas ntsuas thiab nws hom?
Hom txhais
GaugeReference rau atmospheric siab.
SealedReferenced rau lub kaw lus kaw nrog atmospheric siab (kwv yees li 1bar).
AbsoluteThe reference yog lub tshuab nqus tsev (0bar lossis tsis muaj siab).
DifferentialMeasuring qhov sib txawv ntawm ob qhov chaw nres nkoj siab nyeem ntawv.
