Today we propose you one quite cost effective liquid and gas flow meter--Metal rotameter, which has big advantage of low flow rate measurment.  Rota meter adopts variable area measuring theory, which is applicable for measuring liquid and gases and steam, it is all-metal construction, , it has local indication, remotely transfer, anti-corrosion type, high-pressure type, explosion-proof, etc.

It has 0-10mA, 4-20mA standard analog signal output and local indiction, accumulation, digital communication, field modification and measure parameters, different power supply function, it is widely applicable in petrol, chemical, power supply, pharmacy, food, water treatment industry etc.