请提供最小流量，最大流量
提供压力损失
过程压力，及过程温度
可以测量的气体如下：
Acetic acid (C2H4O2)
Acetone (C2H6O)
Acetylene (C2H2)
Air (N2/O2)
Ammonia (NH3)
Argon (A)
Benzene (C2H6O)
Butane (C4H10)
Carbon dioxide (CO2)
Carbon disulfide (CS2)
Carbon monoxide (CO)
Chlorine (Cl2)
Cyclohexane (C6H10)
Ethane (C2H6)
Ethyl alcohol (C2H5OH)
Ethylene (Ethene) (C2H4)
Flourine (F2)
Helium (He)
Hexane (C6H12)
Hydrogen (H2)
Hydrogen bromide (HBr)
Hydrogen chloride (HCl)
Hydrogen cyanide (HCN)
Hydrogen sulfide (H2S)
Iodine (I2)
Methane (CH4)
Methyl alcohol (CH4O)
Nitric oxide (NO)
Nitrogen (N2)
Nitrous oxide (N2O)
Oxygen (O2)
Pentane (iso) (C5H12)
Pentane (n) (C5H12)
Propane (C3H8)
Propyl alcohol (i) (C3H8O)
Propyl alcohol (n) (C3H8O)
Propylene (C3H6)
Sulfur dioxide (SO2)
Toluene (C7H8)
Water (H2O)
Xenon (Xe)
Other gas

今后可以选用西门子外夹式超声波流量计来测量，估计今年10月份差不多了