They are suited to measure the positive and negative pressure of gases and liquids which do not corrode copper and copper alloy and solder of lead and cause no explosion,and of those are neither crystallize nor solidy.

• 该系列仪表适用于测量无爆炸危险、不结晶、不凝固及对铜和铜合金不起腐蚀作用的液体、气体和蒸汽等介质的正负压力。