The air, zero gas, span gas, and fuel show no problems.
空中，零点气体，标定刻度气和燃料表明没有问题。
2
With this method, the operator will have to calibrate zero and span on one background Air and need to change the pressure when backgrounds are changed.
使用此方法标定零点和量程在一个背景气情况下，在需要改变背景气时改变压力。
3
With decimal point span range and digit zero setting function .