ECS-N Economic Single-Channel Rotameter (10 mL/min to 30 L/min), ENESCR

An Economic Single-Channel Rotameter (also known as a Variable Area Flowmeter) is a simple, cost-effective mechanical instrument used to measure and manually indicate the volumetric flow rate of a single liquid or gas line. Operating purely on fluid mechanics without electrical power, it relies on a vertically mounted, tapered transparent tube and an internal float to provide an instantaneous visual flow reading.

The key advantages of the single-channel rotameter are: (1) Low Cost: Substantially more economical than electronic thermal mass flow meters (typically < 50-150). (2) Zero Power Requirement: Inherently explosion-proof and intrinsically safe for flammable or remote environments. (3) Immediate Visual Verification: Allows instant confirmation of whether gas or liquid is actually flowing through the line.