The dft rotating vane flow meter is popular equipment with traditional reliable impeller technology. These rotating vane flowmeters are useful to measure or monitor volumetric flow rates. Some of the salient features of the rotating vane flow meters include modular design; universal use; inexpensive and space saving operation; fulfils the requirements of industry for efficient and low-cost oem production methods; and resistant and highly reliable measurement system due to ptfe housing option for operation in aggressive media. The rotating vane flowmeters are available with technical specifications like 0.1-0.5 up to 3-60 l/min wide measuring range; useful for wide variety of applications; 80Âșc operating temperature; 16 bar pressure; brass housing; and used for almost all process conditions. Hermetically sealed heart of kobold impeller securely embedded ring magnet against the respective medium to transfers impeller rotation to hall sensor fixed to housing with space-saving attachment. The sensor in turn transforms these rotational movements into frequency signal in proportion to volumetric flow. The down stream kobold electronic evaluation unit then transforms signal into either digital display or an analogue normalized signal or it can be used to switch up to two limit contacts. Leds show operational readiness and switching state of the limit value relay. This rotating vane flowmeters system with kobold electronic unit combination provides extremely accurate measuring results under difficult conditions.