Srd corporation offers swiss precision flowmeters. This swiss precision digmesa ag turbine flow transmitters measure to accuracy of 1%. These work on hall effect transistor principle with ceramic magnets laser welded on rotor/turbine wheel. The turbine wheel is of pvdf and bearing pin is of 18/8 steel or pctfe to suit corrosive acids too. For measurement of highly viscous fluids up to 8000 cs, there is special epi flowmeter. Special food flowmeters with ruby bearings with approval under sk223.02 are also available. These are simple in construction, easy to mount. Other specifications: repeatability - 0.25%; work on 4.5 to 24 v dc; and pulse output. These flowmeters are widely used in india for monitoring diesel consumption in gensets, and can be used for furnace oil too. Four models are available in brass and ryton, ex stock, at very low cost.
