LZ series metal tube Rotameter is used to measure flow of liquid, gas and vapor in the sealing channel. In additional to the On-site indication type of LZD flowmeter, it also can match with DDZ-II type，DDZ-III type and 1 series and EK series instrument. If it uses with computer, it can do remote display, recording, regulation and controlling. The flowmeter is simple, stable and low pressure loss. It is widely used in pharmaceutical, chemical, light industry, petrochemical and other industrial sectors