外侧式液位计的应用广、安装方式适合特殊场合，不开孔、不用焊接，调试安装好性能稳定，西安定华外测液位计在国内使用口碑好。(Application of lateral type liquid level meter wide, installation for special occasions, not opening, without welding, installation debugging and stable performance, Xi'an Hua external liqui